This seems to be rare, and most cases in the Austin area are when the original route has been moved onto the frontage road at a certain point. I'd like to see some other examples of this, if they're out there.
The only example I can find is at the T-interchange between TX-45 and TX Loop 1 in Southwest Austin. TX-45 Eastbound continues straight on one lane while two lanes exit towards Loop 1 Northbound. This is the same for TX-45 Westbound, where two lanes exit for Loop 1 North. The interchange isn't on Google Maps yet, but it is on Google Earth.
There's an example over here where the through route has one lane and the ramps have three lanes although in reality the ramps are the through route. The junction was built like this for futureproofing which never happened.
https://goo.gl/maps/Rk6xwrwZy6Fy4o519
I-390 south at I-590 (https://www.google.com/maps/@43.1091405,-77.6091076,3a,74y,54.19h,88.44t/data=!3m6!1e1!3m4!1sauWlsiDdbrVwCfr4NxitOA!2e0!7i13312!8i6656)
https://goo.gl/maps/i4YMtCCG7dR4hs7W8
Technically through lanes are no longer the same road, though, as I-87 designation end around that point.
Quote from: Echostatic on June 07, 2020, 05:39:42 PM
This seems to be rare, and most cases in the Austin area are when the original route has been moved onto the frontage road at a certain point. I'd like to see some other examples of this, if they're out there.
The only example I can find is at the T-interchange between TX-45 and TX Loop 1 in Southwest Austin. TX-45 Eastbound continues straight on one lane while two lanes exit towards Loop 1 Northbound. This is the same for TX-45 Westbound, where two lanes exit for Loop 1 North. The interchange isn't on Google Maps yet, but it is on Google Earth.
For the I-95/Jersey turnpike interchange in Central Jersey, which one is the through route?
I-90 at I-271 (https://www.google.com/maps/@41.6085783,-81.4294409,3a,75y,224.13h,81.77t/data=!3m6!1e1!3m4!1s6pa26DcI5erSKDScfi_hFg!2e0!7i16384!8i8192) near Cleveland is an interesting case. There's two separate exits for I-271: first a 2-lane exit for the express lanes, then a 2-lane exit for the local lanes, leaving just one through lane and one option lane for I-90.
I assume the OP intends to exclude TOTSO configurations, as pretty much all those apply.
Quote from: Roadgeekteen on June 07, 2020, 09:20:08 PM
Quote from: Echostatic on June 07, 2020, 05:39:42 PM
This seems to be rare, and most cases in the Austin area are when the original route has been moved onto the frontage road at a certain point. I'd like to see some other examples of this, if they're out there.
The only example I can find is at the T-interchange between TX-45 and TX Loop 1 in Southwest Austin. TX-45 Eastbound continues straight on one lane while two lanes exit towards Loop 1 Northbound. This is the same for TX-45 Westbound, where two lanes exit for Loop 1 North. The interchange isn't on Google Maps yet, but it is on Google Earth.
For the I-95/Jersey turnpike interchange in Central Jersey, which one is the through route?
I'd go with the one that's not marked as an Exit.
So, for each roadway, 3 lanes thru with 2 exit lanes.
However...coming over the Del. Mem. Br. into NJ on 295: As a result of the option lane, 3 lanes exit for the NJ Tpk, 2 lanes continue as I-295.
I-95 / I-395 / I-495 (Springfield Interchange) in Northern Virginia.
I-95 Northbound (https://www.google.com/maps/@38.7741367,-77.1813398,3a,46.3y,13.45h,85.29t/data=!3m6!1e1!3m4!1sbuHO0KoJKMmVg_4CrdwumQ!2e0!7i13312!8i6656!5m1!1e1) is two lanes where the exit ramp to I-495 and I-395 is 3 lanes.
I-95 Southbound (https://www.google.com/maps/@38.7936627,-77.1533127,3a,73.4y,268.39h,76.87t/data=!3m6!1e1!3m4!1s-Xqskz13NO6d96CsVCZ2mA!2e0!7i16384!8i8192!5m1!1e1) is two lanes where the exit ramp to I-495 and I-395 is 4 lanes.
In this instance, while I-95 is technically a TOTSO due to it following the eastern alignment of I-495, it's designed through this interchange to have full continuity. Stay in the left lanes to continue on I-95 in both directions and enter on the left in both directions.
VA-168 / US-17 split-off in Chesapeake, VA.
VA-168 Southbound (https://www.google.com/maps/@36.7603375,-76.267394,3a,75y,187.35h,79.32t/data=!3m6!1e1!3m4!1sBpAuCjBun0tgizKWl2VNeQ!2e0!7i16384!8i8192!5m1!1e1) is two lanes where the exit ramp to US-17 is 3 lanes.
VA-168 is signed as the through route here, and you technically don't even reach US-17 Southbound until the Great Bridge Blvd on-ramp. US-17 Southbound follows I-64 West (towards Va Beach) to the VA-190 exit, VA-190 for a short distance, then the VA-190 on-ramp to Dominion Blvd / US-17 Southbound.
I-95 South at I-93 in Canton, MA. There are 2 I-95 thru lanes while there are 3 "Exit" lanes for I-93 North.
I-70 East at I-695 (https://www.google.com/maps/@39.3071777,-76.7538248,3a,44.1y,114.38h,89.39t/data=!3m6!1e1!3m4!1sX5pzwD282Qv520wy4Xd7JQ!2e0!7i16384!8i8192!5m1!1e1?hl=en), which reflects the fact that traffic headed pretty much anywhere besides Security Blvd and a certain Park & Ride have to enter the beltway.
Also an honorable mention to I-695 East at I-97 (https://www.google.com/maps/@39.2054584,-76.6406286,3a,41.3y,130.83h,87.77t/data=!3m6!1e1!3m4!1stgtgHcKIgrtZZwrSTLlUBQ!2e0!7i13312!8i6656!5m1!1e1?hl=en) - although the current setup is 2 lanes for each route, it looks like the ramp to I-97 was designed to allow for 3 lanes eventually.
Quote from: jp the roadgeek on June 08, 2020, 03:26:41 AM
I-95 South at I-93 in Canton, MA. There are 2 I-95 thru lanes while there are 3 "Exit" lanes for I-93 North.
Of course, I-93/old MA 128 was originally built as the through route.
I-355's Northern End at I-290 near Itasca
I-355 is given the Thru Route treatment at the Y-Interchange, but it is the signed exit
I-355 is 3 Lanes on/off I-290, whereas I-290 is 2 lanes thru the Interchange ramps
When it comes to TOTSO's, it seems important to distinguish which route is the through route: the one that goes straight through, or the one that follows the signed number.
Quote from: webny99 on June 08, 2020, 01:58:09 PM
When it comes to TOTSO's, it seems important to distinguish which route is the through route: the one that goes straight through, or the one that follows the signed number.
I would say it's the one going straight through regardless of the number. This example has the outside lanes as the signed number.
https://goo.gl/maps/QxaMki1PHk1hQJLn7
Quote from: Truvelo on June 08, 2020, 06:00:26 PM
Quote from: webny99 on June 08, 2020, 01:58:09 PM
When it comes to TOTSO's, it seems important to distinguish which route is the through route: the one that goes straight through, or the one that follows the signed number.
I would say it's the one going straight through regardless of the number. This example has the outside lanes as the signed number.
https://goo.gl/maps/QxaMki1PHk1hQJLn7
When the exits are numbered, I'd say that the one not marked as an exit is the through route.
Ramps are usually 14-16 feet wide while freeway lanes are usually 12' wide. The extra width being a safety issue.
I-81 North at I-84/I-380/US 6 (https://www.google.com/maps/@41.4118291,-75.6177646,3a,47.1y,58.3h,90.23t/data=!3m6!1e1!3m4!1sT0LoIAqagb-5GzwsV5L6Pw!2e0!7i16384!8i8192!5m1!1e1?hl=en)
https://www.google.com/maps/@32.6962189,-96.629275,3a,75y,29.62h,86.73t/data=!3m6!1e1!3m4!1sPzym44tFsp2YwWb6nPvNBg!2e0!7i16384!8i8192
I-20 and I-635 in Balch Springs, TX. Left 2 lanes stay on I-20, right 3 lanes exit to I-635.
I-435 in south suburban Kansas City, at I-470 & I-49.
Two through lanes for I-435, Exit #71A is four lanes of Exit Only.
https://goo.gl/maps/qqbje66S6N4NvkhW7
Quote from: ilpt4u on June 08, 2020, 01:52:21 PM
I-355's Northern End at I-290 near Itasca
I-355 is given the Thru Route treatment at the Y-Interchange, but it is the signed exit
I-355 is 3 Lanes on/off I-290, whereas I-290 is 2 lanes thru the Interchange ramps
I-94 / I-294 start
https://goo.gl/maps/iRYdiftnSHoWxGdQ9
The southbound Taconic at the Sprain in Hawthone, NY: https://www.google.com/maps/@41.1036549,-73.7966429,3a,75y,176.92h,87.41t/data=!3m6!1e1!3m4!1s-FIXh5MvIiaeM4oUi-PqYQ!2e0!7i16384!8i8192
278 at the Grand Central Parkway in Queens: https://www.google.com/maps/@40.7686142,-73.9073938,3a,75y,98.86h,86.65t/data=!3m6!1e1!3m4!1sjwOlpj-wFiAJvYETJCL5ag!2e0!7i16384!8i8192
278 at the Battery Tunnel, IIRC, has three lanes into the tunnel and 1-2 lanes for 278 through traffic
Does this (https://www.google.com/maps/@39.999525,-78.2380525,3a,43.5y,270.99h,91.96t/data=!3m6!1e1!3m4!1sIA2mRfIK_F7S7eckZyRr3g!2e0!7i16384!8i8192!5m1!1e1?hl=en) count? Or this (https://www.google.com/maps/@39.9993031,-78.2361635,3a,75y,93.46h,91.35t/data=!3m6!1e1!3m4!1sEYzRPGNf92_-UvEiaR1zIQ!2e0!7i13312!8i6656!5m1!1e1?hl=en)? :bigass:
Quote from: jmacswimmer on June 11, 2020, 01:10:55 PM
Does this (https://www.google.com/maps/@39.999525,-78.2380525,3a,43.5y,270.99h,91.96t/data=!3m6!1e1!3m4!1sIA2mRfIK_F7S7eckZyRr3g!2e0!7i16384!8i8192!5m1!1e1?hl=en) count? Or this (https://www.google.com/maps/@39.9993031,-78.2361635,3a,75y,93.46h,91.35t/data=!3m6!1e1!3m4!1sEYzRPGNf92_-UvEiaR1zIQ!2e0!7i13312!8i6656!5m1!1e1?hl=en)?
At least with the latter example, you can make an argument that it's a ramp, although it's hardly "wider"... both the ramp and the through route have two lanes.
Quote from: webny99 on June 11, 2020, 03:42:51 PM
At least with the latter example, you can make an argument that it's a ramp, although it's hardly "wider"... both the ramp and the through route have two lanes.
The ramp to I-70 West is 2 lanes where the through lane to US-30 East is 1 lane.
Plenty of examples at traditional interchanges would exist also. I think this thread is more focused on freeways. I-70 is technically an interstate through there, but is not freeway-grade.
I-705 in downtown Tacoma (https://www.google.com/maps/@47.2436539,-122.4346242,3a,78.2y,22.83h,94.39t/data=!3m6!1e1!3m4!1sg9wO6ARjSAoNur4JF18NIw!2e0!7i16384!8i8192?hl=en) -- between the surprisingly bad signage (this is the only sign for the exit (https://www.google.com/maps/@47.240474,-122.4331917,3a,65.6y,360.94h,88.9t/data=!3m6!1e1!3m4!1spIOKAnAm78NnSWmeBGdNmg!2e0!7i16384!8i8192?hl=en)) and the geometry here, it really looks like the mainline goes up the A St ramp.
Also, on the other side of I-5, there's SR 7 at the 38th St interchange/freeway stub (https://www.google.com/maps/@47.2280898,-122.428331,3a,60y,138.81h,94.9t/data=!3m6!1e1!3m4!1s1RcbpGLjULEPYe06-IGmcQ!2e0!7i16384!8i8192?hl=en), but this one only kind of counts as two of the three lanes on the "ramp" end rather abruptly beyond the split.
Quote from: jay8g on June 14, 2020, 04:10:06 AM
I-705 in downtown Tacoma (https://www.google.com/maps/@47.2436539,-122.4346242,3a,78.2y,22.83h,94.39t/data=!3m6!1e1!3m4!1sg9wO6ARjSAoNur4JF18NIw!2e0!7i16384!8i8192?hl=en) -- between the surprisingly bad signage (this is the only sign for the exit (https://www.google.com/maps/@47.240474,-122.4331917,3a,65.6y,360.94h,88.9t/data=!3m6!1e1!3m4!1spIOKAnAm78NnSWmeBGdNmg!2e0!7i16384!8i8192?hl=en)) and the geometry here, it really looks like the mainline goes up the A St ramp.
Also, on the other side of I-5, there's SR 7 at the 38th St interchange/freeway stub (https://www.google.com/maps/@47.2280898,-122.428331,3a,60y,138.81h,94.9t/data=!3m6!1e1!3m4!1s1RcbpGLjULEPYe06-IGmcQ!2e0!7i16384!8i8192?hl=en), but this one only kind of counts as two of the three lanes on the "ramp" end rather abruptly beyond the split.
Aren't there faster ways to get to Mt. Rainer than taking an arterial highway through a densely-populated suburb?
Exit 13 on I-280 in Newark, NJ. Built originally for the never built NJ 75 freeway and the fact east of there it follows the old NJ 58 Expressway that was built to four lanes, it has this awkward situation.
Another good example in Texas: The western end of I-30. I-20 continues eastward with two lanes, although from a one-lane exit. I-30 begins heading eastward with three lanes. This applies as the inverse heading West, where I-30 joins I-20 with three lanes and I-20 continues west with one lane.
Oh the Upper Level exit for NJ Route 4 in Fort Lee, NJ departing the GWB has I-95 S Bound into one lane while NJ 4 takes 2 lanes.
NB I-55 at the I-44 WB/Truman Parkway exit in St. Louis would appear to qualify (https://goo.gl/maps/PjTGohHYXCE7QpXM7)
Also I-70 EB at I-44 WB in St. Louis (https://goo.gl/maps/Xvy8CJwkDBQKSs3S8)
I-287 South at exit 66 in New Jersey (https://www.google.com/maps/@41.10655,-74.1669629,3a,75y,209.66h,91.16t/data=!3m6!1e1!3m4!1siCh6vVFKuj5tj3d3DWjMEA!2e0!7i13312!8i6656!5m1!1e1?hl=en), just after leaving the NYS Thruway.
Quote from: jmacswimmer on June 18, 2020, 01:52:17 PM
I-287 South at exit 66 in New Jersey (https://www.google.com/maps/@41.10655,-74.1669629,3a,75y,209.66h,91.16t/data=!3m6!1e1!3m4!1siCh6vVFKuj5tj3d3DWjMEA!2e0!7i13312!8i6656!5m1!1e1?hl=en), just after leaving the NYS Thruway.
I've always found the signage here to be confusing. There's no mention that lane 3 is an option lane (well, there is a diagrammatical advance sign but it shows the ramp for 17 as being 2 lanes when it's actually 3), so I see a lot of unnecessary last-minute merges into the #2 lane to get on 17 south. A set of APLs would clean up nice here.
(https://i.imgur.com/QzgHS7t.png)
Quote from: crispy93 on June 25, 2020, 11:53:00 AM
Quote from: jmacswimmer on June 18, 2020, 01:52:17 PM
I-287 South at exit 66 in New Jersey (https://www.google.com/maps/@41.10655,-74.1669629,3a,75y,209.66h,91.16t/data=!3m6!1e1!3m4!1siCh6vVFKuj5tj3d3DWjMEA!2e0!7i13312!8i6656!5m1!1e1?hl=en), just after leaving the NYS Thruway.
I've always found the signage here to be confusing. There's no mention that lane 3 is an option lane (well, there is a diagrammatical advance sign but it shows the ramp for 17 as being 2 lanes when it's actually 3), so I see a lot of unnecessary last-minute merges into the #2 lane to get on 17 south. A set of APLs would clean up nice here.
That mile between the Thruway and exit 66 always seems to be an absolute mess in my experience. When driving to/from New England, I typically pass thru coming from the Tappan Ze...er,
Mario M. Cuomo Bridge and continuing onto 287 south. Usually my approach is to immediately shift into the lane that enters from that u-turn ramp and continues onto 287 south, in order to get out of the way of all the weaving traffic.
US 6 and MA 3 in Bourne. (https://goo.gl/maps/pi9G8vDbHmTgi81N6)
Quote from: Ben114 on June 25, 2020, 12:47:14 PM
US 6 and MA 3 in Bourne. (https://goo.gl/maps/pi9G8vDbHmTgi81N6)
According to us maybe, but MassDOT considers MA 3 to be the through movement and will be resigning US 6 as the exit with the conversion to mile-based numbers.
Quote from: kalvado on June 07, 2020, 09:01:37 PM
https://goo.gl/maps/i4YMtCCG7dR4hs7W8
Technically through lanes are no longer the same road, though, as I-87 designation end around that point.
This example is really more TOTSO.
CA 17 SB at the Hamilton Ave. exit in Campbell is 5 lanes wide; the center lane splits between the continuing main carriageway and the ramp, so initially there are 3 lanes on each side of the gore. But a few yards beyond the gore point original Lane #3 (leftmost on the ramp) adds an additional left-turn lane to EB Hamilton (it's a very short ramp as well). So at the termination of the ramp there are 4 total lanes vs. 3 still on the freeway.
On the 400 southbound in Toronto, Ontario, there's 4 lanes for the 401 and only 2 lanes continue on the 400 (which soon becomes Black Creek Drive). Also, the through lanes are on the right.
https://www.google.ca/maps/@43.7286832,-79.5248167,3a,25.3y,167.07h,91t/data=!3m6!1e1!3m4!1sidt6RrhJjOV4bnX8E5ieCg!2e0!7i16384!8i8192 (https://www.google.ca/maps/@43.7286832,-79.5248167,3a,25.3y,167.07h,91t/data=!3m6!1e1!3m4!1sidt6RrhJjOV4bnX8E5ieCg!2e0!7i16384!8i8192)
I-10 eastbound in Baton Rouge at the I-10/I-12 split. 2 lanes for I-10, and 3 exiting for I-12. A third lane for 10 quickly appears just past the split.
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