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National Boards => General Highway Talk => Topic started by: bing101 on February 24, 2014, 02:25:27 PM

Title: How many places are there where an Interstate continues as a state route
Post by: bing101 on February 24, 2014, 02:25:27 PM
http://en.wikipedia.org/wiki/Interstate_110_and_State_Route_110_%28California%29

http://en.wikipedia.org/wiki/Interstate_210_%28California%29

http://en.wikipedia.org/wiki/CA_238
http://en.wikipedia.org/wiki/Interstate_238_%28California%29

en.wikipedia.org/wiki/Interstate_15_in_California

en.wikipedia.org/wiki/I-710



en.wikipedia.org/wiki/Interstate_495_(New_York)

en.wikipedia.org/wiki/New_Jersey_Route_495

These are the routes where an interstate continues as a state route I-495 New York, NJ-495
CA-710 and I-710 in California, CA-210 and I-210, CA-238 and I-238, CA-15 and I-15, I-110 and CA-110 in California.

Title: Re: How many places are there where an Interstate continues as a state route
Post by: oscar on February 24, 2014, 02:32:32 PM
I guess you're limiting this to state routes with the same number as the Interstates, right?  That would make this exercise more manageable.

How about I-195 -> VA 195 in Richmond?
Title: Re: How many places are there where an Interstate continues as a state route
Post by: NE2 on February 24, 2014, 02:44:47 PM
I-381 VA, I-471 KY, I-540 NC, I-695 MD (officially), I-295 DC (if DC is a state)

I-10 FL looks like it does, but SR 10 is the hidden number for US 90 west of Jax.

Is I-215 NV the only one that continues as a county route?
Title: Re: How many places are there where an Interstate continues as a state route
Post by: 1995hoo on February 24, 2014, 02:45:01 PM
edited–never mind, NE2 beat me to it. The board didn't trigger the "someone else posted" warning, oddly enough.

Unposted I-878 to NY-878 might be another, if you count unposted route numbers.

If you're willing to count provinces, then you have I-95 to New Brunswick Route 95.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: TheStranger on February 24, 2014, 02:49:05 PM
New York has quite a few of these: 390, 590, 690, 890, 481.  (NY 878 technically)

Would that segment of the San Bernardino Freeway between US 101 and I-5 count?

IL 255

Had it been built, the section of freeway extending west from the 380/280 interchange in San Bruno would have been California state route 380.

Title: Re: How many places are there where an Interstate continues as a state route
Post by: Big John on February 24, 2014, 03:12:39 PM
!-794 to WI 794 in Milwaukee.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: oscar on February 24, 2014, 03:28:49 PM
Quote from: 1995hoo on February 24, 2014, 02:45:01 PM
If you're willing to count provinces, then you have I-95 to New Brunswick Route 95.

And I-29 to MB 29 (very short connector in Emerson to the MB 75 highway to Winnipeg).
Title: Re: How many places are there where an Interstate continues as a state route
Post by: PHLBOS on February 24, 2014, 03:45:23 PM
One could argue that the I-283/PA 283 (http://goo.gl/maps/Zy8Hk) hand-off is continuous.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: bzakharin on February 24, 2014, 04:39:55 PM
Is 495 west of the LIE continuous? Wikipedia seems to imply that 34th street connext it to I-495 which in turn implies that it does not have that number where I-495 ends.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: spooky on February 24, 2014, 05:16:14 PM
Quote from: TheStranger on February 24, 2014, 02:49:05 PM
New York has quite a few of these: 390, 590, 690, 890, 481.  (NY 878 technically)

and 787.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: roadman65 on February 24, 2014, 05:35:52 PM
I-295 in DC continues as DC 295.  One could argue that MD 295 could be that too, but the BW Parkway is unsigned and not exactly sure if MDSHA counts it as a hidden route 295 or not.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Molandfreak on February 24, 2014, 05:51:54 PM
Quote from: oscar on February 24, 2014, 03:28:49 PM
Quote from: 1995hoo on February 24, 2014, 02:45:01 PM
If you're willing to count provinces, then you have I-95 to New Brunswick Route 95.
And I-29 to MB 29 (very short connector in Emerson to the MB 75 highway to Winnipeg).
not anymore. http://en.wikipedia.org/wiki/Manitoba_Highway_29
Title: Re: How many places are there where an Interstate continues as a state route
Post by: NE2 on February 24, 2014, 07:26:10 PM
Quote from: roadman65 on February 24, 2014, 05:35:52 PM
I-295 in DC continues as DC 295.  One could argue that MD 295 could be that too, but the BW Parkway is unsigned and not exactly sure if MDSHA counts it as a hidden route 295 or not.
MD 295 begins at US 50; you have to use MD 201 to connect from DC 295 to MD 295. (The BW Parkway officially follows US 50 into DC, but MD 295 does not.)
Title: Re: How many places are there where an Interstate continues as a state route
Post by: nexus73 on February 24, 2014, 07:38:07 PM
I-105/SR 126 becomes SR 126 after crossing I-5 and heading east in Eugene-Springfield OR.

Rick
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Brian556 on February 24, 2014, 07:45:05 PM
I-4 Daytona, Fl. Continues as a non-controlled access highway, though. It is signed SR 400, the hidden number of I-4.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: vdeane on February 24, 2014, 09:08:40 PM
Quote from: NE2 on February 24, 2014, 07:26:10 PM
Quote from: roadman65 on February 24, 2014, 05:35:52 PM
I-295 in DC continues as DC 295.  One could argue that MD 295 could be that too, but the BW Parkway is unsigned and not exactly sure if MDSHA counts it as a hidden route 295 or not.
MD 295 begins at US 50; you have to use MD 201 to connect from DC 295 to MD 295. (The BW Parkway officially follows US 50 into DC, but MD 295 does not.)
So they have a route that otherwise is a surface street enter a freeway and have a number "hand-off" for no apparent reason whatsoever and still call most of the freeway MD 295 even though it doesn't continue anything... and to think there are even more illogical numbering situations around!
Title: Re: How many places are there where an Interstate continues as a state route
Post by: bing101 on February 24, 2014, 09:34:58 PM
Quote from: NE2 on February 24, 2014, 02:44:47 PM
I-381 VA, I-471 KY, I-540 NC, I-695 MD (officially), I-295 DC (if DC is a state)

I-10 FL looks like it does, but SR 10 is the hidden number for US 90 west of Jax.

Is I-215 NV the only one that continues as a county route?
Yes I215 in Paradise continues as cc 215 in the Vegas suburbs.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: jp the roadgeek on February 24, 2014, 09:42:22 PM
I-691 in CT continues as CT 66.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Charles2 on February 24, 2014, 09:56:42 PM
I-759 becomes AL-759 east of US 411 in Gadsden, AL.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: hbelkins on February 24, 2014, 09:58:54 PM
I-265 and KY 841 on both ends.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Pete from Boston on February 24, 2014, 09:58:59 PM

Quote from: jp the roadgeek on February 24, 2014, 09:42:22 PM
I-691 in CT continues as CT 66.

Is the thread question looking for examples of continuous roads, continuous numbers, or both?

If 691 qualifies, there is also MA 25 seamlessly starting at the end of I-495.  And depending on how you interpret it, there's MA 128 at the end of I-93.  But I realize that's pushing it.

Title: Re: How many places are there where an Interstate continues as a state route
Post by: NE2 on February 24, 2014, 10:01:47 PM
Quote from: bing101 on February 24, 2014, 09:34:58 PM
Is I-215 NV the only one that continues as a county route?
Yes I215 in Paradise continues as cc 215 in the Vegas suburbs.
[/quote]
Thanks for not answering my question.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: oscar on February 25, 2014, 12:20:17 AM
Unsigned Interstate A-2 is concurrent with the middle part of AK 2.  AK 2 continues as a non-Interstate route north and west of Fairbanks, and continues concurrent with Interstate A-1 east of Tok. 
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Zeffy on February 25, 2014, 12:23:37 AM
Quote from: Pete from Boston on February 24, 2014, 09:58:59 PM
If 691 qualifies, there is also MA 25 seamlessly starting at the end of I-495.  And depending on how you interpret it, there's MA 128 at the end of I-93.  But I realize that's pushing it.

If these qualify, I-195 continues as NJ 29 at the western end, NJ 138 at the eastern end.

I-287 continues as NJ 440 at it's southern end.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: roadman65 on February 25, 2014, 12:30:56 AM
Quote from: vdeane on February 24, 2014, 09:08:40 PM
Quote from: NE2 on February 24, 2014, 07:26:10 PM
Quote from: roadman65 on February 24, 2014, 05:35:52 PM
I-295 in DC continues as DC 295.  One could argue that MD 295 could be that too, but the BW Parkway is unsigned and not exactly sure if MDSHA counts it as a hidden route 295 or not.
MD 295 begins at US 50; you have to use MD 201 to connect from DC 295 to MD 295. (The BW Parkway officially follows US 50 into DC, but MD 295 does not.)
So they have a route that otherwise is a surface street enter a freeway and have a number "hand-off" for no apparent reason whatsoever and still call most of the freeway MD 295 even though it doesn't continue anything... and to think there are even more illogical numbering situations around!
The big hand off is PA 283 to I-283 where PA 283 ends at I-283.  That is the strangest, although logical on paper I think.  I would rather see I-283 and PA 283 as one continuous route or even have I-283 continue to Lancaster.  PA has never been one to follow interstate guidelines, hence I-70 in Breezewood and what about I-70 from New Stanton to Washington, PA.  Tell me that is no different standards then PA 283 is.

The one in MD at least is not signed for the most part, so it really does not stick out except to maybe us.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Alps on February 25, 2014, 01:21:51 AM
Quote from: spooky on February 24, 2014, 05:16:14 PM
Quote from: TheStranger on February 24, 2014, 02:49:05 PM
New York has quite a few of these: 390, 590, 690, 890, 481.  (NY 878 technically)

and 787.
Nope. I-787 turns onto NY 7 before ending across the bridge. So yes it continues as a state route, but not the one you think.

(Also, I-495 does not at all connect to NY 495, unless you use FHWA definitions. NYSDOT's NY 495 is just the Lincoln Tunnel.)
Title: Re: How many places are there where an Interstate continues as a state route
Post by: spooky on February 25, 2014, 07:57:40 AM
Quote from: Alps on February 25, 2014, 01:21:51 AM
Quote from: spooky on February 24, 2014, 05:16:14 PM
Quote from: TheStranger on February 24, 2014, 02:49:05 PM
New York has quite a few of these: 390, 590, 690, 890, 481.  (NY 878 technically)

and 787.
Nope. I-787 turns onto NY 7 before ending across the bridge. So yes it continues as a state route, but not the one you think.


I should have known this given the number of times I've driven it. So technically I-787 ends at the traffic light at 8th St, where the bridge terminates and joins Hoosick Street?
Title: Re: How many places are there where an Interstate continues as a state route
Post by: The High Plains Traveler on February 25, 2014, 10:06:27 AM
Quote from: oscar on February 24, 2014, 03:28:49 PM
Quote from: 1995hoo on February 24, 2014, 02:45:01 PM
If you're willing to count provinces, then you have I-95 to New Brunswick Route 95.

And I-29 to MB 29 (very short connector in Emerson to the MB 75 highway to Winnipeg).
I believe the MB-29 designation has been eliminated, and 75 goes to the border to meet I-29. This is due to the closure of the U.S. 75 Noyes-Emerson border crossing. If you look at GSV, the road through Emerson, MB, which was where 75 turned, is now shown as MB-200 on the signs.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Kacie Jane on February 25, 2014, 10:40:57 AM
Quote from: Zeffy on February 25, 2014, 12:23:37 AM

If these qualify, I-195 continues as NJ 29 at the western end, NJ 138 at the eastern end.


At the risk of taking the thread slightly off topic, I'd be curious how often an interstate dies this at both ends like 195 does (for now).
Title: Re: How many places are there where an Interstate continues as a state route
Post by: agentsteel53 on February 25, 2014, 10:43:50 AM
Quote from: Kacie Jane on February 25, 2014, 10:40:57 AM

At the risk of taking the thread slightly off topic, I'd be curious how often an interstate dies this at both ends like 195 does (for now).

Nevada's I-580 continues as US-395 at the north end and ... some state route connector to US-395 at the south end (NV-431?)

I'd look it up on Google Maps but it's all new and improved and enjoys crashing my browser, and showing up with "an error has occurred" for such forbidden actions as zooming in.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: TheStranger on February 25, 2014, 11:34:00 AM
Quote from: agentsteel53 on February 25, 2014, 10:43:50 AM
Quote from: Kacie Jane on February 25, 2014, 10:40:57 AM

At the risk of taking the thread slightly off topic, I'd be curious how often an interstate dies this at both ends like 195 does (for now).

Nevada's I-580 continues as US-395 at the north end and ... some state route connector to US-395 at the south end (NV-431?)

Current south end is temporary US 50/395.  Not sure what state route designation it has (431 is about 15 miles north)

I-515 in Vegas would fit (US 95 at each end of the route)

110 in Los Angeles used to until the Gaffey Street/state route 110 portion in San Pedro was decommissioned
Title: Re: How many places are there where an Interstate continues as a state route
Post by: codyg1985 on February 25, 2014, 11:49:18 AM
I-440 continues as AR 440 north of I-40 in North Little Rock, AR.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: hm insulators on February 25, 2014, 12:47:45 PM
Quote from: TheStranger on February 25, 2014, 11:34:00 AM
Quote from: agentsteel53 on February 25, 2014, 10:43:50 AM
Quote from: Kacie Jane on February 25, 2014, 10:40:57 AM

At the risk of taking the thread slightly off topic, I'd be curious how often an interstate dies this at both ends like 195 does (for now).

Nevada's I-580 continues as US-395 at the north end and ... some state route connector to US-395 at the south end (NV-431?)

Current south end is temporary US 50/395.  Not sure what state route designation it has (431 is about 15 miles north)

I-515 in Vegas would fit (US 95 at each end of the route)

110 in Los Angeles used to until the Gaffey Street/state route 110 portion in San Pedro was decommissioned

I-110 becomes California 110 north of the Four-Level in downtown Los Angeles.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: vdeane on February 25, 2014, 01:23:17 PM
Quote from: Alps on February 25, 2014, 01:21:51 AM
Quote from: spooky on February 24, 2014, 05:16:14 PM
Quote from: TheStranger on February 24, 2014, 02:49:05 PM
New York has quite a few of these: 390, 590, 690, 890, 481.  (NY 878 technically)

and 787.
Nope. I-787 turns onto NY 7 before ending across the bridge. So yes it continues as a state route, but not the one you think.

(Also, I-495 does not at all connect to NY 495, unless you use FHWA definitions. NYSDOT's NY 495 is just the Lincoln Tunnel.)
Well, if you're using the official, hidden routing for I-787, you also have to invalidate 690 and 890.

If we're allowing different number continuations, I-790 continues as NY 5 on both ends and also as NY 8 and NY 12 on its western end.  I-587 continues as NY 28 on its western end and NY 32 on its eastern.  I-678 becomes the Hutchinson River Parkway, and I-895 becomes E 177th St.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: NE2 on February 25, 2014, 01:26:54 PM
Quote from: vdeane on February 25, 2014, 01:23:17 PM
Well, if you're using the official, hidden routing for I-787, you also have to invalidate 690 and 890.
I-690 and I-890 end at the I-90 interchanges. Calling a double trumpet a mainline and not a ramp is pretty close to the height of anality.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: roadman65 on February 25, 2014, 01:43:31 PM
Quote from: Kacie Jane on February 25, 2014, 10:40:57 AM
Quote from: Zeffy on February 25, 2014, 12:23:37 AM

If these qualify, I-195 continues as NJ 29 at the western end, NJ 138 at the eastern end.


At the risk of taking the thread slightly off topic, I'd be curious how often an interstate dies this at both ends like 195 does (for now).

Interesting observation you bring up as that thought occurred to me as well.   I think you found a rarity even though like you said off topic a bit.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Doctor Whom on February 25, 2014, 02:25:37 PM
I-795 and one of the two MD 795's.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: TheStranger on February 25, 2014, 02:38:42 PM
Quote from: hm insulators on February 25, 2014, 12:47:45 PM


I-110 becomes California 110 north of the Four-Level in downtown Los Angeles.

Noted!  The question asked was specific to that example turning into a state route at BOTH ends (which was the case until a few years ago)...

...unless one considers that to be Route 47 at the south end now, and Route 110 north of 101 as has been the case since the 1980s.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: bassoon1986 on February 25, 2014, 02:50:38 PM
Not the same number, but
I-220 in Louisiana continues as LA 3132
I-510 continues as LA 47 at both ends

I-369 continues as AR 151 (for now)
I-45 continues as TX 87

I-69 in MS continues as MS 713 for now (not the best example as I-69 is in segments)
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Eth on February 25, 2014, 04:18:38 PM
Quote from: Kacie Jane on February 25, 2014, 10:40:57 AM
At the risk of taking the thread slightly off topic, I'd be curious how often an interstate dies this at both ends like 195 does (for now).

I-575 continues as GA 5 on both ends (at the south end, via a brief concurrency with I-75). Same for I-516 and GA 21.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: amroad17 on February 25, 2014, 08:22:38 PM
Quote from: roadman65 on February 25, 2014, 12:30:56 AM
Quote from: vdeane on February 24, 2014, 09:08:40 PM
Quote from: NE2 on February 24, 2014, 07:26:10 PM
Quote from: roadman65 on February 24, 2014, 05:35:52 PM
I-295 in DC continues as DC 295.  One could argue that MD 295 could be that too, but the BW Parkway is unsigned and not exactly sure if MDSHA counts it as a hidden route 295 or not.
MD 295 begins at US 50; you have to use MD 201 to connect from DC 295 to MD 295. (The BW Parkway officially follows US 50 into DC, but MD 295 does not.)
So they have a route that otherwise is a surface street enter a freeway and have a number "hand-off" for no apparent reason whatsoever and still call most of the freeway MD 295 even though it doesn't continue anything... and to think there are even more illogical numbering situations around!
The big hand off is PA 283 to I-283 where PA 283 ends at I-283.  That is the strangest, although logical on paper I think.  I would rather see I-283 and PA 283 as one continuous route or even have I-283 continue to Lancaster.  PA has never been one to follow interstate guidelines, hence I-70 in Breezewood and what about I-70 from New Stanton to Washington, PA.  Tell me that is no different standards then PA 283 is.

The one in MD at least is not signed for the most part, so it really does not stick out except to maybe us.
Since PA 283 was reconstructed 10 years ago, it is of much better quality than I-70 south of Breezewood and between New Stanton and Washington.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: hbelkins on February 25, 2014, 08:23:28 PM
Quote from: Kacie Jane on February 25, 2014, 10:40:57 AM
At the risk of taking the thread slightly off topic, I'd be curious how often an interstate dies this at both ends like 195 does (for now).

Quote from: hbelkins on February 24, 2014, 09:58:54 PM
I-265 and KY 841 on both ends.

:bigass:
Title: Re: How many places are there where an Interstate continues as a state route
Post by: froggie on February 28, 2014, 11:49:48 AM
QuoteSo they have a route that otherwise is a surface street enter a freeway and have a number "hand-off" for no apparent reason whatsoever and still call most of the freeway MD 295 even though it doesn't continue anything... and to think there are even more illogical numbering situations around!

This is a bit less convoluted than you make it out to be.

For starters, the section of Kenilworth Ave between the DC line and US 50 has long been designated MD 201...that designation predates both DC 295 and predates that section of Kenilworth Ave being upgraded to a freeway.

Second, it's very debatable as to whether the NPS section of the Baltimore-Washington Pkwy even has a route designation.

Lastly, very few people call the lower part of the B-W Pkwy (from US 50 to roughly MD 175) by the 295 number.  Most refer to the whole thing all the way to Baltimore as either the "Baltimore Washington Parkway" or call it the "B-W Parkway" for short.  So there really isn't the confusion factor you suggest, either.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: bugo on February 28, 2014, 06:38:32 PM
Quote from: hbelkins on February 24, 2014, 09:58:54 PM
I-265 and KY 841 on both ends.

Quote
I guess you're limiting this to state routes with the same number as the Interstates, right?  That would make this exercise more manageable.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: cwf1701 on February 28, 2014, 07:28:55 PM
One that could have been: in the mid-70s, what would be later be M-5 north of the I-275/I-696/I-96 junction was for a time (on paper) M-275.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: amroad17 on February 28, 2014, 07:42:07 PM
I-564 becomes VA 337 near the Naval Base in Norfolk, VA.
Historically, I-264 became VA 44 at the I-64 interchange in Norfolk.
I-464 transitions to US 17 in Chesapeake, VA. (and to some extent, VA 168)
Title: Re: How many places are there where an Interstate continues as a state route
Post by: shadyjay on February 28, 2014, 08:02:44 PM
Quote from: jp the roadgeek on February 24, 2014, 09:42:22 PM
I-691 in CT continues as CT 66.

Funny.... I was just remembering the other day about seeing the sign "NOTICE - 66 IS NOW 691" sign.  It was posted WB just past the Preston Ave/Exit 12 overpass.  This was in the 80s. 

Why didn't I take pictures of signs back in those days???
Title: Re: How many places are there where an Interstate continues as a state route
Post by: bugo on March 01, 2014, 12:31:30 AM
Quote from: shadyjay on February 28, 2014, 08:02:44 PM
Why didn't I take pictures of signs back in those days???

I ask myself the same question all the time.  My answer is that I didn't have a camera when I was a kid, and if I had developing the photos was expensive for a 10 year old and my parents were always broke.  A roll of film held a fixed number of exposures, and you couldn't just look at the screen to see if the picture turned out OK.  I wish the digital camera had come to market 30 years before it did, and if so I would have tens of thousands of now historic road pictures.  A lot of us would.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: TEG24601 on March 01, 2014, 10:57:11 AM
Depending on your point of view, you could consider that I-84 continues West of Portland, OR as either US-26 or US-30.  While is isn't a direct connection, due to the I-5/I-405 loop around downtown, there is a large amount of traffic that crosses the city from either US route to I-84.


I-90's Western Terminus continues as SR-519 in Seattle, which in turn continues as two state routes on the western ends of the ferry routes.


I-180 continues South of I-80 in Cheyenne as US 85.


I-182 continues East of Tri-Cities, WA as US 12 (SR-12)



Title: Re: How many places are there where an Interstate continues as a state route
Post by: mrsman on March 02, 2014, 08:46:50 AM
Quote from: froggie on February 28, 2014, 11:49:48 AM
QuoteSo they have a route that otherwise is a surface street enter a freeway and have a number "hand-off" for no apparent reason whatsoever and still call most of the freeway MD 295 even though it doesn't continue anything... and to think there are even more illogical numbering situations around!

This is a bit less convoluted than you make it out to be.

For starters, the section of Kenilworth Ave between the DC line and US 50 has long been designated MD 201...that designation predates both DC 295 and predates that section of Kenilworth Ave being upgraded to a freeway.

Second, it's very debatable as to whether the NPS section of the Baltimore-Washington Pkwy even has a route designation.

Lastly, very few people call the lower part of the B-W Pkwy (from US 50 to roughly MD 175) by the 295 number.  Most refer to the whole thing all the way to Baltimore as either the "Baltimore Washington Parkway" or call it the "B-W Parkway" for short.  So there really isn't the confusion factor you suggest, either.


The DC DOT recently made this 295 designation much simpler.

Until recently, I-295 started at the Beltway near the Wilson Bridge and then continued on the 11th Street Bridge into Downtown DC ending at I-395 in Capitol Hill.  Meanwhile DC 295 started just before the 11th Street Bridge and headed towards the 50/BW interchange.  So in essence in Anacostia, I-295 split into two separate routes: I-295 and DC 295. 

But now that they've instituted the I-695 designation for the freeway connection between Anacostia and Capitol Hill, and 295 is one roadway.

To really simplify things, of course, they should convince the Nat'l Park Service to designate the BW Parkway as some kind of Federal-295.

In my view, I'd like all limited access highways (GW Pkwy, BW Pkwy, NYC area parkways, La Cienega Expressway in L.A.) to be designated with some kind of route number, even if it's not an official state highway.  It will definitely ease navigation.


As far as 283 in Penn., there isn't as much confusion on the signage as there is on the map.  I would also like to see I-283 extended to Lancaster and I would post the stub routes (connection to 230 and connection to the Turnpike) as two different state routes. 

So if going southbound, I'll see I-283 to Lancaster but PA XXX to I-76 to Philly and Pittsburgh.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: hotdogPi on March 02, 2014, 08:59:25 AM
I-393 continues as NH 9 (and US 4 and US 202).
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Pete from Boston on March 02, 2014, 09:41:24 AM

Quote from: 1 on March 02, 2014, 08:59:25 AM
I-393 continues as NH 9 (and US 4 and US 202).

Is that really 393 "continuing"?  None of those roads begin where 393 ends.  Once you open that can of worms this thread just becomes "How many places are there where an Interstate ends at a state highway?"
Title: Re: How many places are there where an Interstate continues as a state route
Post by: froggie on March 03, 2014, 09:36:09 PM
QuoteUntil recently, I-295 started at the Beltway near the Wilson Bridge and then continued on the 11th Street Bridge into Downtown DC ending at I-395 in Capitol Hill.

Not quite correct there.  The Southeast Freeway between I-395/3rd St Tunnel and the 11th St Bridge has always been I-695...just wasn't signed until recently.  What I-295 did was cross the 11th St Bridge, then follow the Southeast Freeway stub to Pennsylvania Ave.  I-295 was to have continued around the east side of RFK, then skirt northwest more or less along Mt. Olivet Rd NE to meet I-95 on top of today's Amtrak rail yard (north of US 50/New York Ave and east of the 9th St NE bridge).
Title: Re: How many places are there where an Interstate continues as a state route
Post by: froggie on March 03, 2014, 09:45:59 PM
Continuing the original topic trend...not the same number, but MN 61 begins where I-35 ends in Duluth, MN.  And down in D'Iberville, MS, both MS 15 and MS 67 begin as a continuation of the I-110 roadway.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: english si on March 04, 2014, 07:02:12 AM
So, we have the following same number, signed, examples

AL 759
AR 440
CA 15
CA 110
CA 210
CA 238
DC 295
IL 255
NY 390
NY 481
NY 590
NY 690
NY 787
NY 890
PA 283
VA 195
WI 794
and there's Clark County 215 in NV
Title: Re: How many places are there where an Interstate continues as a state route
Post by: tdindy88 on March 04, 2014, 08:31:52 AM
I'd imagine that IN 265 is our state's only one, SR 57 used to qualify but now that is of course I-69. Once the East End Bridge is finished then the SR 265 moniker goes away to become I-265.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: froggie on March 04, 2014, 08:51:18 AM
QuoteSo, we have the following same number, signed, examples

NC 540 (mentioned earlier) missing from your list.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: agentsteel53 on March 04, 2014, 09:35:45 AM
I-229 in South Dakota turns into a dirt county road.  it is numbered as "476th St." - does that count as a numbering?  it should: the number is in accordance with an orderly and well-defined grid!
Title: Re: How many places are there where an Interstate continues as a state route
Post by: bing101 on March 08, 2014, 10:11:07 AM
I noticed that Texas has two roads designated as 45 , TX-45 and I-45

http://en.wikipedia.org/wiki/Interstate_45 (http://en.wikipedia.org/wiki/Interstate_45)

I-45 goes from Houston to Dallas

But TX-45 is within Austin, TX. I don't see any documents showing TX-45 at any point going to I-45. I am not sure how Texas DOT permit this to happen.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: hotdogPi on March 08, 2014, 10:18:18 AM
Quote from: bing101 on March 08, 2014, 10:11:07 AM
I noticed that Texas has two roads designated as 45 , TX-45 and I-45

http://en.wikipedia.org/wiki/Interstate_45 (http://en.wikipedia.org/wiki/Interstate_45)

I-45 goes from Houston to Dallas

But TX-45 is within Austin, TX. I don't see any documents showing TX-45 at any point going to I-45. I am not sure how Texas DOT permit this to happen.

Some states allow it, and some states don't.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: oscar on March 08, 2014, 12:27:36 PM
Quote from: bing101 on March 08, 2014, 10:11:07 AM
I noticed that Texas has two roads designated as 45 , TX-45 and I-45

http://en.wikipedia.org/wiki/Interstate_45 (http://en.wikipedia.org/wiki/Interstate_45)

I-45 goes from Houston to Dallas

But TX-45 is within Austin, TX. I don't see any documents showing TX-45 at any point going to I-45. I am not sure how Texas DOT permit this to happen.

It happens in other places in Texas. such as I-20, TX 20 in El Paso three counties west of I-20's west end, and TX Loop 20 in Laredo far south of I-20.

And don't get me started on duplicate numbering between regular and loop/spur state routes, such as 360 in the Dallas area and Loop 360 in Austin, or 151 in San Antonio and Loop 151 in Texarkana.

TxDOT seems not to care in the least about number duplication, at least if the same-numbered routes are in different parts of the state.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: bing101 on March 08, 2014, 06:30:06 PM
I never thought of that because i noticed that in some parts of california have historic us routes like us40 in solano and sacramento that are now city managed streets thats because caltrans removed us40 because i40 was assigned to the mojave area.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: NE2 on March 08, 2014, 06:41:58 PM
Quote from: bing101 on March 08, 2014, 06:30:06 PM
caltrans removed us40 because i40 was assigned to the mojave area.
No. Caltrans removed US 40 because their policy has generally been to move U.S. Routes to parallel freeways, and the freeway now had a new number.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Brandon on March 08, 2014, 08:28:35 PM
Quote from: bing101 on March 08, 2014, 10:11:07 AM
I noticed that Texas has two roads designated as 45 , TX-45 and I-45

http://en.wikipedia.org/wiki/Interstate_45 (http://en.wikipedia.org/wiki/Interstate_45)

I-45 goes from Houston to Dallas

But TX-45 is within Austin, TX. I don't see any documents showing TX-45 at any point going to I-45. I am not sure how Texas DOT permit this to happen.

Lots of states "duplicate" numbers.  They usually use the prefix to separate types of routes, i.e. I-96 and M-96; I-64 (FAI-64) and IL-64 (SBI-64); I-64 and IN-64 (SR-64); etc.

To be frank, I find the states that do not use numbers like that a bit odd.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Molandfreak on March 08, 2014, 08:38:47 PM
holy crap http://en.wikipedia.org/wiki/Minnesota_State_Highway_62 http://en.wikipedia.org/wiki/Minnesota_State_Highway_101
Title: Re: How many places are there where an Interstate continues as a state route
Post by: NE2 on March 08, 2014, 10:45:41 PM
Quote from: Molandfreak on March 08, 2014, 08:38:47 PM
holy crap http://en.wikipedia.org/wiki/Minnesota_State_Highway_62 http://en.wikipedia.org/wiki/Minnesota_State_Highway_101
62's a good example, but 101 is just two segments of a once-continuous route.

holy crap http://en.wikipedia.org/wiki/Florida_State_Road_145

There's also KY 3215 (https://www.aaroads.com/forum/index.php?topic=4489.msg98630#msg98630): presumably two districts simultaneously used the same next available number and never fixed it.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Molandfreak on March 08, 2014, 11:00:55 PM
Quote from: NE2 on March 08, 2014, 10:45:41 PM
Quote from: Molandfreak on March 08, 2014, 08:38:47 PM
holy crap http://en.wikipedia.org/wiki/Minnesota_State_Highway_62 http://en.wikipedia.org/wiki/Minnesota_State_Highway_101
62's a good example, but 101 is just two segments of a once-continuous route.

holy crap http://en.wikipedia.org/wiki/Florida_State_Road_145

There's also KY 3215 (https://www.aaroads.com/forum/index.php?topic=4489.msg98630#msg98630): presumably two districts simultaneously used the same next available number and never fixed it.
holy crap http://en.wikipedia.org/wiki/California_State_Route_146 :bigass:
Title: Re: How many places are there where an Interstate continues as a state route
Post by: NE2 on March 08, 2014, 11:06:13 PM
Quote from: Molandfreak on March 08, 2014, 11:00:55 PM
holy crap http://en.wikipedia.org/wiki/California_State_Route_146 :bigass:
Another failure; that's defined as one continuous route that was simply never built in the middle.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: roadfro on March 12, 2014, 04:25:19 AM
Going back to page two to address this question:

Quote from: TheStranger on February 25, 2014, 11:34:00 AM
Quote from: agentsteel53 on February 25, 2014, 10:43:50 AM
Quote from: Kacie Jane on February 25, 2014, 10:40:57 AM
At the risk of taking the thread slightly off topic, I'd be curious how often an interstate dies this at both ends like 195 does (for now).
Nevada's I-580 continues as US-395 at the north end and ... some state route connector to US-395 at the south end (NV-431?)
Current south end is temporary US 50/395.  Not sure what state route designation it has (431 is about 15 miles north)

At the south end, Nevada I-580 stops at the William Street/US 50 interchange, so the freeway continues as US 50/395 (it's the permanent alignment for those two highways, not a temporary one). The open segment of Carson City Freeway without I-580 doesn't have a state route designation (it is in the NDOT highway logs as US 50).

The temporary alignment of US 50/395 is along Fairview Drive, forming the connection between the end of the freeway and the old alignment on Carson Street. Fairview Drive is not a state highway (nor has it ever been). To my knowledge, it's the only place in Nevada where a signed US highway (technically a "Temporary" route, according to AASHTO) is not maintained by NDOT.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: english si on March 12, 2014, 02:57:38 PM
Quote from: NE2 on March 08, 2014, 10:45:41 PMholy crap http://en.wikipedia.org/wiki/Florida_State_Road_145

There's also KY 3215 (https://www.aaroads.com/forum/index.php?topic=4489.msg98630#msg98630): presumably two districts simultaneously used the same next available number and never fixed it.
3? is that it? That's good going. Northern Ireland had 3 in its original numbering!

Britain has lots. (http://www.sabre-roads.org.uk/wiki/index.php?title=Duplicated_road_numbers)
Title: Re: How many places are there where an Interstate continues as a state route
Post by: The Premier on March 12, 2014, 03:12:26 PM
I-280 near Toledo continues as SR 420, which in turn ends at U.S. Highways 20 & 23.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Mamba205 on May 08, 2014, 11:55:01 PM
I-255 in Missouri/Illinois turns into Illinois Route 255 after intersecting I-270 in Pontoon Beach, IL. It maintains Interstate Highway standards.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: dgolub on May 09, 2014, 08:53:06 AM
Quote from: Alps on February 25, 2014, 01:21:51 AM
(Also, I-495 does not at all connect to NY 495, unless you use FHWA definitions. NYSDOT's NY 495 is just the Lincoln Tunnel.)

Right, although this is an easy mistake to make because NY 495 is signed as I-495 in a batch of places, including on NY 9A.  So, a road signed as I-495 (but really designated NY 495) turns into NJ 495.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Mapmikey on May 09, 2014, 01:59:13 PM
Quote from: agentsteel53 on March 04, 2014, 09:35:45 AM
I-229 in South Dakota turns into a dirt county road.  it is numbered as "476th St." - does that count as a numbering?  it should: the number is in accordance with an orderly and well-defined grid!

476th St is paved for the first 3 miles after the north end of I-229...

In the consolidated list above I-381 becoming VA 381 is missing
The Virginia CTB considered continuing I-464 as VA 464 but elected to make it VA 104 instead.

Mapmikey
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Bruce on May 09, 2014, 06:50:08 PM
I-90 continues west from I-5/4th Avenue as WA-519 in Seattle.

I-405 continues west from I-5 in Southcenter as WA-518 as well as continuing north as WA-525 from I-5 in Alderwood/Lynnwood.

I-705 continues south as WA-7 from I-5 in Tacoma.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: tidecat on May 10, 2014, 08:58:07 AM
I-265 and IN-265 in Indiana, but probably only until late 2015 or early 2016 when it is joined to I-265 in KY
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Duke87 on May 10, 2014, 12:01:21 PM
Quote from: english si on March 04, 2014, 07:02:12 AM
NY 690
NY 787
NY 890
PA 283

Technically no on all of these. I-690 and I-890 end at I-90, which are different points from where they meet NY 690 and NY 890. Likewise, the north end of I-787 turns and crosses the Hudson River, so NY 787 ends at I-787, but I-787 does not end at NY 787.

I-283 ends at I-76, not at PA 283. And PA 283 ends at the traffic light at the west end of the freeway, not at I-283. So that one's a double no!
Title: Re: How many places are there where an Interstate continues as a state route
Post by: froggie on May 10, 2014, 08:52:36 PM
QuoteTechnically no on all of these. I-690 and I-890 end at I-90, which are different points from where they meet NY 690 and NY 890.

True on I-890, but according to NYSDOT GIS shapefiles, I-690 does not extend onto the ramps to/from Exit 39.  So in this case, I-690/NY 690 would be a "yes".
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Duke87 on May 11, 2014, 12:25:13 AM
Quote from: froggie on May 10, 2014, 08:52:36 PM
True on I-890, but according to NYSDOT GIS shapefiles, I-690 does not extend onto the ramps to/from Exit 39.  So in this case, I-690/NY 690 would be a "yes".

Tell CHM that. They have I-690 on those ramps.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: froggie on May 11, 2014, 08:14:44 AM
I'm a CHM contributor...there are other factors at play with the CHM lists than what's strictly official or not.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: myosh_tino on May 11, 2014, 02:53:52 PM
Given all of the California examples, I'm surprised no one has mentioned I-880 turning into CA-17 south of I-280 in San Jose.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: DevalDragon on May 13, 2014, 12:21:02 AM
Illinois 394 in Northeastern Illinois. I 394 would be an appropriate spur name if it ever became an interstate.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Bickendan on May 22, 2014, 03:17:23 AM
The US route ones are fun, especially where the handoff from the US route to state or provincial route doesn't exist anymore thanks to a truncation (US 75 and MB 75; US 61 and MN 61, and the clincher, US 99 and BC 99).
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Brandon on May 22, 2014, 10:03:24 AM
Quote from: DevalDragon on May 13, 2014, 12:21:02 AM
Illinois 394 in Northeastern Illinois. I 394 would be an appropriate spur name if it ever became an interstate.

But it really doesn't continue as a state route.  The Calumet Expressway does, but I-94 makes a turn there.
Title: Re: How many places are there where an Interstate continues as a state route
Post by: Arkansastravelguy on May 23, 2014, 02:54:14 AM
Does I-74 to US 74 count in North Carolina? That's gotta be one of a kind


iPhone
Title: Re: How many places are there where an Interstate continues as a state route
Post by: amroad17 on May 23, 2014, 06:09:28 PM
That would be just like I-41/US 41 in Illinois and Wisconsin.