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National Boards => General Highway Talk => Topic started by: hobsini2 on January 19, 2012, 08:36:00 PM

Title: Mirror highway junctions
Post by: hobsini2 on January 19, 2012, 08:36:00 PM
I don't know if someone has done a thread on this but i think it would be a neat topic. What i am talking about is when 2 separate route numbers have a junction. For example, in Oak Brook IL, IL 83 and IL 38 have a junction but they have to be the same type of route such as Interstate, US or State so junctions like IL 54 and US 45 in Onarga IL would not count. Technically a mirror of Rt 1 would be Rt 10 if you were to add a zero in front to make it a 2di.  3dis can count if the outside numbers are flipped. I was wondering if we could get a list going on such occasions to see how common or uncommon this happens. I'll start off with some i am aware of.

IL 38 @ IL 83 - Oak Brook IL
WI 23 @ WI 32 - north of Sheboygan Falls WI
WI 46 @ WI 64 - northwest of Cylon WI


Title: Re: Mirror highway junctions
Post by: hbelkins on January 19, 2012, 08:44:29 PM
I call them "dyslexic's nightmares."

WV 16 and WV 61 have concurrencies. WV 74 and WV 47 intersect.

Kentucky has none that I can come up with among its two-digit routes.
Title: Re: Mirror highway junctions
Post by: huskeroadgeek on January 19, 2012, 08:54:36 PM
US 14 and US 41 in Chicago.
US 36 and US 63 in Macon, MO.
Title: Re: Mirror highway junctions
Post by: hobsini2 on January 19, 2012, 08:55:38 PM
Quote from: huskeroadgeek on January 19, 2012, 08:54:36 PM
US 14 and US 41 in Chicago.
US 36 and US 63 in Macon, MO.
I should have come up with 14 and 41. damn! :)
Title: Re: Mirror highway junctions
Post by: Takumi on January 19, 2012, 08:58:10 PM
Some from Virginia:
I-85 and US 58
VA 61 and VA 16 (61's west end)
VA 91 and US 19 Business (in the same area as 16/61, also 91's north end)
VA 122 and US 221
VA 33 and US 33 :p
Title: Re: Mirror highway junctions
Post by: hobsini2 on January 19, 2012, 09:05:59 PM
Quote from: Takumi on January 19, 2012, 08:58:10 PM
Some from Virginia:
I-85 and US 58
VA 61 and VA 16 (61's west end)
VA 91 and US 19 Business (in the same area as 16/61, also 91's north end)
VA 122 and US 221
VA 33 and US 33 :p
You missed the one condition i put in the rules for the list. The route numbers have to be the same type such as Interstate with Interstate and so on. Nice try though.
Title: Re: Mirror highway junctions
Post by: huskeroadgeek on January 19, 2012, 09:32:54 PM
I believe the only interstate that fits would be I-69 and I-96 in Lansing, MI.
Title: Re: Mirror highway junctions
Post by: prenatt1166 on January 19, 2012, 10:15:44 PM
US 224 and US 422 in New Castle, PA
Title: Re: Mirror highway junctions
Post by: The High Plains Traveler on January 19, 2012, 10:47:10 PM
CO-96 ends at CO-69 in Westcliffe. 
Title: Re: Mirror highway junctions
Post by: tdindy88 on January 19, 2012, 11:12:05 PM
IN 49 and I-94 in Chesterton, Indiana.
US 41 and IN 14 in Enos, Indiana
Title: Re: Mirror highway junctions
Post by: US71 on January 19, 2012, 11:34:32 PM
US 81 and US 18 in South Dakota.

US 69 & US 96 in Texas
Title: Re: Mirror highway junctions
Post by: Ace10 on January 19, 2012, 11:41:09 PM
If we count hidden State Road numbers, in Florida, SR 5 and SR 50 meet in Titusville. US Route 1 is hidden SR 5. SR 500 does the same thing with SR 5 in Melbourne.

SR 90 may also work in Miami, as it intersects SR 9A (I-95) but the A in 9A may disqualify this one.

And SR 91 (the hidden number for Florida's Turnpike) has an interchange with SR 19 near US 27.
Title: Re: Mirror highway junctions
Post by: WNYroadgeek on January 20, 2012, 12:33:04 AM
NY 36 and NY 63 in York, and again in Dansville
NY 31 and NY 13 in Lenox
Title: Re: Mirror highway junctions
Post by: empirestate on January 20, 2012, 12:38:44 AM
Well, off hand:

NY 3 meets NY 30 in Tupper Lake
NY 5 & 50 in Scotia
NY 8 & 80 in New Berlin
NY 13 & 31 by Verona Beach
NY 23 & 32 in Cairo

I'd probably find a lot more in the state if I scoured thoroughly...
Title: Re: Mirror highway junctions
Post by: Alps on January 20, 2012, 12:56:30 AM
Exhaustive NJ list:

[Does not include county routes]
Title: Re: Mirror highway junctions
Post by: TheStranger on January 20, 2012, 05:08:08 AM
California:

Route 19 and 91 in Bellflower


in the past, Route 21 ended at Route 12 in Fairfield, but this has not been the case since 1976

Route 8 and Route 88 used to both terminate in Stockton but 8 was renumbered to 26 in 1964 to make way for I-8

Route 11 and Route 1 intersected from 1934-1984 (when the former became I-110)

US 6 and US 66 had a concurrency in downtown Los Angeles in the 1950s



Title: Re: Mirror highway junctions
Post by: agentsteel53 on January 20, 2012, 11:24:47 AM
to cover the rest of the two-digit US routes...

old US-16 intersects US-61 just about where I-90 crosses the Mississippi into Minnesota.

old US-25 and US-52 intersect in Cincinnati.

US-27 and US-72 intersect in Chattanooga.  In fact, US-72 may end at US-27.

old US-38 and US-83 intersected in McCook, Nebraska.

US-45 intersected old US-54 somewhere in Illinois, but I am not sure what route 54 took to get to Chicago from its current terminus.

Title: Re: Mirror highway junctions
Post by: NE2 on January 20, 2012, 11:28:45 AM
Quote from: agentsteel53 on January 20, 2012, 11:24:47 AM
US-45 intersected old US-54 somewhere in Illinois, but I am not sure what route 54 took to get to Chicago from its current terminus.
There was a long overlap from the end of IL 54.
Title: Re: Mirror highway junctions
Post by: bassoon1986 on January 20, 2012, 12:07:25 PM
Louisiana:

LA 1 and LA 10 concurrency from Morganza to New Roads
LA 2 and ALT LA 2?  This may be a stretch
Title: Re: Mirror highway junctions
Post by: NE2 on January 20, 2012, 12:20:54 PM
I don't care what the rules are. I'm going to submit SR A1A and CR A1A as the only interesting answer.
Title: Re: Mirror highway junctions
Post by: Bickendan on January 20, 2012, 02:17:17 PM
Quote from: TheStranger on January 20, 2012, 05:08:08 AM
California:

Route 19 and 91 in Bellflower


in the past, Route 21 ended at Route 12 in Fairfield, but this has not been the case since 1976

Route 8 and Route 88 used to both terminate in Stockton but 8 was renumbered to 26 in 1964 to make way for I-8

Route 11 and Route 1 intersected from 1934-1984 (when the former became I-110)

US 6 and US 66 had a concurrency in downtown Los Angeles in the 1950s




Did US 6 and 60 ever meet?
Title: Re: Mirror highway junctions
Post by: agentsteel53 on January 20, 2012, 02:41:32 PM
Quote from: Bickendan on January 20, 2012, 02:17:17 PM

Did US 6 and 60 ever meet?
that's a really good question.  I do not know if 60 was ever extended to the Four-Level, which 6 passed through.  60 may have always ended (along with 70) at the San Bernardino Split, which is part of the East LA right now.

would be nice to see signage from the Four-Level showing 6 and 60, but I have never seen such a thing. 
Title: Re: Mirror highway junctions
Post by: TheStranger on January 20, 2012, 04:41:45 PM
Quote from: agentsteel53 on January 20, 2012, 02:41:32 PM
Quote from: Bickendan on January 20, 2012, 02:17:17 PM

Did US 6 and 60 ever meet?
that's a really good question.  I do not know if 60 was ever extended to the Four-Level, which 6 passed through.  60 may have always ended (along with 70) at the San Bernardino Split, which is part of the East LA right now.

would be nice to see signage from the Four-Level showing 6 and 60, but I have never seen such a thing. 

Didn't we see signage for 70 at the Four-Level - but NEVER 60?  I always thought that was interesting: one concurrency ending at US 101, the other at 6 & 66.

Title: Re: Mirror highway junctions
Post by: agentsteel53 on January 20, 2012, 04:57:11 PM
Quote from: TheStranger on January 20, 2012, 04:41:45 PM

Didn't we see signage for 70 at the Four-Level - but NEVER 60?  I always thought that was interesting: one concurrency ending at US 101, the other at 6 & 66.



I have not seen 60 or 70 signage at the Four-Level; it is the San Bernardino Split that is depicted here.  this is a 1963 photo, after 60 had been truncated back to Holt and Mission.

(//www.aaroads.com/shields/img/CA/CA19620701i1.jpg)
Title: Re: Mirror highway junctions
Post by: TheStranger on January 20, 2012, 05:10:40 PM
Quote from: agentsteel53 on January 20, 2012, 04:57:11 PM
Quote from: TheStranger on January 20, 2012, 04:41:45 PM

Didn't we see signage for 70 at the Four-Level - but NEVER 60?  I always thought that was interesting: one concurrency ending at US 101, the other at 6 & 66.



I have not seen 60 or 70 signage at the Four-Level

I recall posting this photo of the Four-Level (from Eric Fischer's archive) a while back:

http://www.flickr.com/photos/walkingsf/5006703733/in/photostream/

It doesn't clarify if US 70 started at the Four-Level, but that spot on US 101 (at the start of the Santa Ana Freeway) is probably the westernmost sign for it that ever existed.

(One could argue that the usage of US 70 signage this far past the San Bernardino Split is similar to today's Caltrans usage of US 101 signage on I-80 west between the foot of the Bay Bridge and I-80's terminus at the Central Freeway in San Francisco.)
Title: Re: Mirror highway junctions
Post by: agentsteel53 on January 20, 2012, 05:18:23 PM
Quote from: TheStranger on January 20, 2012, 05:10:40 PM

I recall posting this photo of the Four-Level (from Eric Fischer's archive) a while back:

http://www.flickr.com/photos/walkingsf/5006703733/in/photostream/

It doesn't clarify if US 70 started at the Four-Level, but that spot on US 101 (at the start of the Santa Ana Freeway) is probably the westernmost sign for it that ever existed.

(One could argue that the usage of US 70 signage this far past the San Bernardino Split is similar to today's Caltrans usage of US 101 signage on I-80 west between the foot of the Bay Bridge and I-80's terminus at the Central Freeway in San Francisco.)

I had forgotten about that one.  but yes, it stands to reason to sign US-70 from just a mile or so away from the East LA.

by that time it looks like 60 was gone.
Title: Re: Mirror highway junctions
Post by: TheStranger on January 20, 2012, 05:25:47 PM
Quote from: agentsteel53 on January 20, 2012, 05:18:23 PM
Quote from: TheStranger on January 20, 2012, 05:10:40 PM

I recall posting this photo of the Four-Level (from Eric Fischer's archive) a while back:

http://www.flickr.com/photos/walkingsf/5006703733/in/photostream/

It doesn't clarify if US 70 started at the Four-Level, but that spot on US 101 (at the start of the Santa Ana Freeway) is probably the westernmost sign for it that ever existed.

(One could argue that the usage of US 70 signage this far past the San Bernardino Split is similar to today's Caltrans usage of US 101 signage on I-80 west between the foot of the Bay Bridge and I-80's terminus at the Central Freeway in San Francisco.)

I had forgotten about that one.  but yes, it stands to reason to sign US-70 from just a mile or so away from the East LA.

by that time it looks like 60 was gone.

I remember us discussing that at length some time ago - assuming the pre-1964 situation, and assuming that there were no Interstates in the area at the time of this photo (otherwise, we'd see the situation that exists today, of I-5 advanced signage from the Four-Level onwards on 101)...

1. Did 60 even ever reach the Four-Level?  (The sign the 70 shield covers up is a 99, which I assume at this point was on the Golden State Freeway)
2. Was 60's west end until 1964 always at 101, whether at the existing San Bernardino Split, or at the proposed East Los Angeles Interchange?
Title: Re: Mirror highway junctions
Post by: agentsteel53 on January 20, 2012, 05:48:30 PM
Quote from: TheStranger on January 20, 2012, 05:25:47 PM
1. Did 60 even ever reach the Four-Level?  (The sign the 70 shield covers up is a 99, which I assume at this point was on the Golden State Freeway)

no idea, as the original San Bernardino Split was built before the Four-Level.  Mike Ballard says the two went to the Four-Level, but I've seen it only signed to the San Bernardino Split.

Quote2. Was 60's west end until 1964 always at 101, whether at the existing San Bernardino Split, or at the proposed East Los Angeles Interchange?

no, it was truncated by 1959 or 1960 to what is currently 71@10. I have maps showing only 70/99 on the San Bernardino Fwy.
Title: Re: Mirror highway junctions
Post by: The High Plains Traveler on January 20, 2012, 07:07:12 PM
Quote from: agentsteel53 on January 20, 2012, 05:48:30 PM
Quote from: TheStranger on January 20, 2012, 05:25:47 PM
1. Did 60 even ever reach the Four-Level?  (The sign the 70 shield covers up is a 99, which I assume at this point was on the Golden State Freeway)

no idea, as the original San Bernardino Split was built before the Four-Level.  Mike Ballard says the two went to the Four-Level, but I've seen it only signed to the San Bernardino Split.

Quote2. Was 60's west end until 1964 always at 101, whether at the existing San Bernardino Split, or at the proposed East Los Angeles Interchange?

no, it was truncated by 1959 or 1960 to what is currently 71@10. I have maps showing only 70/99 on the San Bernardino Fwy.
U.S. 60 continued to be posted along the San Bernardino Freeway from Pomona to downtown L.A. until the 1964 renumbering. The format of the signage indicated that the Division of Highways was preparing to move the route to the Pomona Freeway; there were assemblies of I-10/U.S. 70/U.S. 99 shields on one post or light pole, then a lone U.S. 60 shield on another light pole nearby. After U.S. 99 was moved onto the Golden State, the overhead signage at the San Bernardino/Golden State interchange inbound to L.A. was changed to U.S. 70  - the only time I remember seeing any suggestion that U.S. 70 might ever exist other than as a concurrent route. After 1964 that shield was replaced with U.S. 101.
Title: Re: Mirror highway junctions
Post by: agentsteel53 on January 20, 2012, 07:20:10 PM
Quote from: The High Plains Traveler on January 20, 2012, 07:07:12 PM
U.S. 60 continued to be posted along the San Bernardino Freeway from Pomona to downtown L.A. until the 1964 renumbering. The format of the signage indicated that the Division of Highways was preparing to move the route to the Pomona Freeway; there were assemblies of I-10/U.S. 70/U.S. 99 shields on one post or light pole, then a lone U.S. 60 shield on another light pole nearby.

wow, that is the first time I had heard of that!

I had seen somewhere a photo of a 10/70/99 with no 60, and also the maps... I'll have to find the 10/70/99 to see if there is a 60 lurking in the background
Title: Re: Mirror highway junctions
Post by: The High Plains Traveler on January 20, 2012, 07:51:08 PM
Quote from: agentsteel53 on January 20, 2012, 07:20:10 PM
Quote from: The High Plains Traveler on January 20, 2012, 07:07:12 PM
U.S. 60 continued to be posted along the San Bernardino Freeway from Pomona to downtown L.A. until the 1964 renumbering. The format of the signage indicated that the Division of Highways was preparing to move the route to the Pomona Freeway; there were assemblies of I-10/U.S. 70/U.S. 99 shields on one post or light pole, then a lone U.S. 60 shield on another light pole nearby.

wow, that is the first time I had heard of that!

I had seen somewhere a photo of a 10/70/99 with no 60, and also the maps... I'll have to find the 10/70/99 to see if there is a 60 lurking in the background
Personal observations. We roadgeeks start young.
Title: Re: Mirror highway junctions
Post by: US71 on January 20, 2012, 09:26:55 PM
Would 540/ 45 count?  ;-)

I-540/AR 45 in Ft Smith.
Title: Re: Mirror highway junctions
Post by: hobsini2 on January 20, 2012, 09:53:08 PM
Quote from: US71 on January 20, 2012, 09:26:55 PM
Would 540/ 45 count?  ;-)

I-540/AR 45 in Ft Smith.
it would if they both were the same type of route. I vs state doesn't count.