Poll
Question:
Does your state attach traffic signals to the bridge?
Option 1: Yes
votes: 9
Option 2: No
votes: 8
It definitely helps in windy conditions but I know North Carolina isn't one of them that does it. I've seen them in Virginia and I know Tennessee, Utah (and many other states) DO attach the traffic signals to the bridge.
I-295 and US-401 - https://www.google.com/maps/@35.1542278,-78.8697994,3a,75y,17.31h,90.37t/data=!3m7!1e1!3m5!1skzLmGngQ-FXXamodHfxhCw!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DkzLmGngQ-FXXamodHfxhCw%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D164.33887%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192
US-17 (Dominion Blvd) and VA 165 - https://www.google.com/maps/@36.7275051,-76.3016728,3a,31.5y,303.18h,91.56t/data=!3m7!1e1!3m5!1sjOocV_Bw8JyHT84It7hQLQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DjOocV_Bw8JyHT84It7hQLQ%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D311.5107%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656
Utah - https://www.google.com/maps/@40.3882645,-111.8329369,3a,75y,261.56h,95.44t/data=!3m7!1e1!3m5!1sN0GC73KqBpisBrh1crkm8w!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DN0GC73KqBpisBrh1crkm8w%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D282.49698%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192
New Mexico - https://www.google.com/maps/@35.1804688,-106.6683276,3a,54.3y,28.04h,88.7t/data=!3m7!1e1!3m5!1sRUWs6u0IJRceF3iF-yYQng!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DRUWs6u0IJRceF3iF-yYQng%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D96.14516%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192
I see them attached to the bridge most in SPUI interchanges.
I don't think Ohio have any under SPUIs, but there may be other instances where a traffic signal could be attached to the bridge.
Missouri does attach them to the bridge, and sometimes, under the bridge (https://www.google.com/maps/@38.5925884,-90.5085066,3a,42.2y,320.08h,91.19t/data=!3m6!1e1!3m4!1sdoem5l2300B-4zsL7tWyIw!2e0!7i16384!8i8192).
Quote from: SkyPesos on December 16, 2021, 03:59:08 PM
I see them attached to the bridge most in SPUI interchanges.
I don't think Ohio have any under SPUIs, but there may be other instances where a traffic signal could be attached to the bridge.
Missouri does attach them to the bridge, and sometimes, under the bridge (https://www.google.com/maps/@38.5925884,-90.5085066,3a,42.2y,320.08h,91.19t/data=!3m6!1e1!3m4!1sdoem5l2300B-4zsL7tWyIw!2e0!7i16384!8i8192).
Yes. They attach them to the bridges on almost all SPUI interchanges. New Jersey does not though.
Michigan US 24 @ I-94
https://www.google.com/maps/@42.2642481,-83.2702671,3a,39.5y,346.42h,87.43t/data=!3m6!1e1!3m4!1sPRZu61j6fnjsspaiZ-sMeA!2e0!7i16384!8i8192!5m1!1e1
All examples appear to be SPIU's
I've never seen any NYSDOT installed signals mounted on a bridge but there are plenty of signals in NYC mounted on bridges, elevated subways and other structures.
Quote from: steviep24 on December 16, 2021, 06:15:47 PM
I've never seen any NYSDOT installed signals mounted on a bridge but there are plenty of signals in NYC mounted on bridges, elevated subways and other structures.
Hm. I'm wondering if I saw them in Region 8.
https://goo.gl/maps/yXFMuBXaHmo5QP4u7
^This is the only place where I occasionally pass through and see this...it's another example at a SPUI in Michigan. I don't think I've seen signals attached directly to the bridge in Illinois outside of the City of Chicago. Someone might be able to fill me in on some I've missed, though.
Quote from: paulthemapguy on December 16, 2021, 07:48:14 PM
https://goo.gl/maps/yXFMuBXaHmo5QP4u7
^This is the only place where I occasionally pass through and see this...it's another example at a SPUI in Michigan. I don't think I've seen signals attached directly to the bridge in Illinois outside of the City of Chicago. Someone might be able to fill me in on some I've missed, though.
I'm not sure if this (https://www.google.com/maps/@42.023029,-88.3120636,3a,43.6y,7.09h,91.21t/data=!3m7!1e1!3m5!1s-bMlUBeVVdCHz21Da4JjWA!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3D-bMlUBeVVdCHz21Da4JjWA%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D61.411972%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192) counts as it but the pole is attached to the bridge as well as the signals on the pole.
Quote from: steviep24 on December 16, 2021, 06:15:47 PM
I've never seen any NYSDOT installed signals mounted on a bridge but there are plenty of signals in NYC mounted on bridges, elevated subways and other structures.
You were saying? (https://www.google.com/maps/@44.0537488,-75.8334779,3a,75y,7.83h,91.99t/data=!3m7!1e1!3m5!1szdtEchLTc9k-mXYLNNoE2A!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DzdtEchLTc9k-mXYLNNoE2A%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D332.8542%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656)
colorado springs, cimarron and i-25:
https://goo.gl/maps/L1A3aGh841snCvSg8 (https://goo.gl/maps/L1A3aGh841snCvSg8)
It might be time to make a map to know which states mount their signals on the bridge and which do not.
_______________________________
26 states: 22 yes and 4 no. Most of the country mounts signals to the bridges!
Arizona: Yes
California: Yes
Colorado: Yes
Florida: Yes
Georgia: Yes
Illinois: Yes
Indiana: Yes
Kansas: Yes
Kentucky: Yes
Maryland: Yes
Michigan: Yes
Missouri: Yes
Montana: No
Nebraska: Yes
Nevada: Yes
New Jersey: No
New Mexico: Yes
New York: Yes
North Carolina: No
Oregon: Yes
South Carolina: Yes
South Dakota: Yes
Tennessee: Yes
Texas: No
Utah: Yes
Virginia: Yes
Here's one from Indiana in Columbus (I-65 at SR 46): https://www.google.com/maps/@39.200275,-85.9575467,3a,75y,300.93h,90t/data=!3m6!1e1!3m4!1sP7hyHYbz8wcDWFbBDkIEmA!2e0!7i16384!8i8192
Quote from: Great Lakes Roads on December 16, 2021, 11:31:05 PM
Here's one from Indiana in Columbus (I-65 at SR 46): https://www.google.com/maps/@39.200275,-85.9575467,3a,75y,300.93h,90t/data=!3m6!1e1!3m4!1sP7hyHYbz8wcDWFbBDkIEmA!2e0!7i16384!8i8192
Did not catch that so I'll fix it.
I don't know if they are cheaper than just building two poles with span wires or whatnot. I just find them interesting that they mount them on the bridge.
It appears the majority of the country does that.
Quote from: tolbs17 on December 16, 2021, 11:46:19 PM
I don't know if they are cheaper than just building two poles with span wires or whatnot. I just find them interesting that they mount them on the bridge.
It appears the majority of the country does that.
Here's some span wires between a couple bridge beams with signals mounted:
https://www.google.com/maps/@28.5532117,-81.3823341,3a,90y,140.51h,86.59t/data=!3m7!1e1!3m5!1sc3BFOJFbASR46vwRGIGgAw!2e0!5s20210501T000000!7i16384!8i8192
Quote from: UCFKnights on December 17, 2021, 12:10:24 AM
Quote from: tolbs17 on December 16, 2021, 11:46:19 PM
I don't know if they are cheaper than just building two poles with span wires or whatnot. I just find them interesting that they mount them on the bridge.
It appears the majority of the country does that.
Here's some span wires between a couple bridge beams with signals mounted:
https://www.google.com/maps/@28.5532117,-81.3823341,3a,90y,140.51h,86.59t/data=!3m7!1e1!3m5!1sc3BFOJFbASR46vwRGIGgAw!2e0!5s20210501T000000!7i16384!8i8192
Nifty! Now I was going to ask everybody should NCDOT (and other DOTs that don't mount signals to bridges) follow the practice?
Quote from: paulthemapguy on December 16, 2021, 07:48:14 PM
I don't think I've seen signals attached directly to the bridge in Illinois outside of the City of Chicago. Someone might be able to fill me in on some I've missed, though.
The SPUI for IL 13@I-57 in Marion has the signals attached to the I-57 Overpass
https://www.google.com/maps/@37.7406282,-88.9586529,3a,75y,102.97h,100.99t/data=!3m6!1e1!3m4!1sbRdVq_2J4BtGkwFkKCTKYQ!2e0!7i16384!8i8192
This next one is across the Mississippi River from Illinois, on the Missouri/St Louis side of the Eads Bridge, with Signals mounted on the I-44 Overpass
https://www.google.com/maps/@38.6296544,-90.1855912,3a,75y,285.61h,83.24t/data=!3m7!1e1!3m5!1s1mFU41rtxQf_7veYs1cr0w!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3D1mFU41rtxQf_7veYs1cr0w%26cb_client%3Dsearch.revgeo_and_fetch.gps%26w%3D96%26h%3D64%26yaw%3D90.27252%26pitch%3D0%26thumbfov%3D100!7i16384!8i8192
Quote from: vdeane on December 16, 2021, 08:54:38 PM
Quote from: steviep24 on December 16, 2021, 06:15:47 PM
I've never seen any NYSDOT installed signals mounted on a bridge but there are plenty of signals in NYC mounted on bridges, elevated subways and other structures.
You were saying? (https://www.google.com/maps/@44.0537488,-75.8334779,3a,75y,7.83h,91.99t/data=!3m7!1e1!3m5!1szdtEchLTc9k-mXYLNNoE2A!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DzdtEchLTc9k-mXYLNNoE2A%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D332.8542%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656)
And a non-SPUI example (https://www.google.com/maps/@42.1554867,-77.0977297,3a,75y,67.27h,78.44t/data=!3m6!1e1!3m4!1sbONSk1cd81z_qWRb7F165A!2e0!7i13312!8i6656). (The ones facing the off-ramp are a real neck-twister).
Kentucky is Yes.
https://goo.gl/maps/AEev8f3V7tTEmWKN9
https://goo.gl/maps/JmCYWWSAgg4E9kPBA
Quote from: CardInLex on December 17, 2021, 07:25:12 PM
Kentucky is Yes.
https://goo.gl/maps/AEev8f3V7tTEmWKN9
https://goo.gl/maps/JmCYWWSAgg4E9kPBA
Took me a while to find a SPUI interchange with the arterial below the highway but thanks!
^^^
That one at I-264 and Westport Road was the one I was thinking of.
Nevada will affix traffic signals to bridges. Although the only place you see this with any regularity is SPUIs where the intersection is constructed at the same time as the freeway bridge overhead. There are other instances where signals could have been affixed to a bridge but weren't, typically because the bridge was preexisting and the intersection layout changed later.
So it seems the question isn't "which state am I in." The question is "am I at a SPUI where the surface road crosses underneath the freeway."
As far as I know, there's only one such install in the entire state of Minnesota, at MN-55 and Lake Street (https://goo.gl/maps/r8WpD2X5C7FjYJS59) in Minneapolis. If you really want to get technical, I think this intersection is a Minneapolis city install and as far as I know MNDOT as a statewide agency doesn't maintain any signals attached to bridges.
Texas won't do it even when it would make perfect sense to do so. (https://www.google.com/maps/@29.7510509,-95.373502,3a,75y,129.84h,90.22t/data=!3m6!1e1!3m4!1sSieISeDOOLiYO0mk7ZSSew!2e0!7i16384!8i8192)
Quote from: CoreySamson on December 20, 2021, 04:36:53 PM
Texas won't do it even when it would make perfect sense to do so. (https://www.google.com/maps/@29.7510509,-95.373502,3a,75y,129.84h,90.22t/data=!3m6!1e1!3m4!1sSieISeDOOLiYO0mk7ZSSew!2e0!7i16384!8i8192)
Our state is the same way... And I don't know what the advantages of attaching signals to the bridge are besides wind.
I don't think Ontario does this.
- This SPUI in Ottawa (https://www.google.ca/maps/@45.3502945,-75.6547441,3a,90y,217.78h,91.09t/data=!3m6!1e1!3m4!1sEHCcYn1L4EPHe1uSDJUq0A!2e0!7i16384!8i8192) has the signals on separate poles (though there are sensors mounted on the overpass).
- Under the Gardiner in Toronto (https://www.google.ca/maps/@43.6386317,-79.3922784,3a,90y,69.9h,85.23t/data=!3m6!1e1!3m4!1sssHGVbqXsWJNryhG6J9B6A!2e0!7i16384!8i8192), the signals are on separate poles.
- Even this low railway overpass in Cambridge (https://www.google.ca/maps/@43.367892,-80.3166903,3a,49.1y,331.06h,90.63t/data=!3m6!1e1!3m4!1s_P-KHkTFjvgLfk633FBrXA!2e0!7i16384!8i8192) has the signals on separate poles.
A couple more Louisville, KY entries:
Intersection of Kentucky St at Brook St: https://goo.gl/maps/zcrieWpdiDj4N4pP9 (after further review, this one is actually all span wire just below the bridge–leaving here because it is a weird signal)
Intersection of Preston St (KY 61) at Jefferson St: https://goo.gl/maps/BoHBcs8vG3ggaKir9
Intersection of River Rd at 2nd Street: https://goo.gl/maps/vvCEyuAvQJWMTAK39
Intersection of River Rd at 3rd Street/I-64 off ramp: https://goo.gl/maps/UWB5zQ7XbhM9r5CFA
Intersection of River Rd at 4th Street/Belle of Louisville: https://goo.gl/maps/7nFe1BfZXzC5WUzn6
Advanced signal at intersection of 7th Street/9th Street at Magnolia Ave: https://goo.gl/maps/7kKM9Ui1QuciatNt8
SPUI interchange of 9th Street at Oak Street: https://goo.gl/maps/dLd1vD9M4AdqHNEH8
Quote from: CardInLex on December 21, 2021, 04:25:33 PM
Advanced signal at intersection of 7th Street/9th Street at Magnolia Ave: https://goo.gl/maps/7kKM9Ui1QuciatNt8
what's the purpose of that signal? is it because the next light is a little obscured until you're right on it? i've never seen anything like that before.
Quote from: zachary_amaryllis on December 21, 2021, 06:16:28 PM
Quote from: CardInLex on December 21, 2021, 04:25:33 PM
Advanced signal at intersection of 7th Street/9th Street at Magnolia Ave: https://goo.gl/maps/7kKM9Ui1QuciatNt8
what's the purpose of that signal? is it because the next light is a little obscured until you're right on it? i've never seen anything like that before.
Yes, exactly that. There is another one similar to it in Louisville. I didn't include it because it is not attached to the bridge, but here it is: https://goo.gl/maps/Uqd3e4tpWHGydtF17
Quote from: CardInLex on December 21, 2021, 06:32:15 PM
Quote from: zachary_amaryllis on December 21, 2021, 06:16:28 PM
Quote from: CardInLex on December 21, 2021, 04:25:33 PM
Advanced signal at intersection of 7th Street/9th Street at Magnolia Ave: https://goo.gl/maps/7kKM9Ui1QuciatNt8
what's the purpose of that signal? is it because the next light is a little obscured until you're right on it? i've never seen anything like that before.
Yes, exactly that. There is another one similar to it in Louisville. I didn't include it because it is not attached to the bridge, but here it is: https://goo.gl/maps/Uqd3e4tpWHGydtF17
The first example seems too far away from the intersection to be used. It is like 300 ft away. Perhaps a flashing warning sign of the upcoming red signal would be better.
The second example is OK.
I wonder if the intersection signals would be more visible here if they were aligned horizontally.
Alabama had one example I can think of off the top of my head. Before the I-59/20 viaduct was replaced, it had a left exit and entrance to 21st and 22nd Street. These intersection featured traffic lights attached to the viaduct. When the viaduct was replaced, this interchange was removed.
I think it's safe to say that Oklahoma Doesn't. (https://goo.gl/maps/aVPeBLn3h3A3YxqS8) At all. (https://goo.gl/maps/2F868YHGuZ2pvxiW7)
South Carolina does it too, here's an example
https://www.google.com/maps/@33.7325783,-78.9453664,3a,39.4y,57.46h,94.22t/data=!3m7!1e1!3m5!1s1-Epm78j3A9chPN1Ef7dKQ!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3D1-Epm78j3A9chPN1Ef7dKQ%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D62.707302%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656
And another one which is right down the road - https://www.google.com/maps/@33.7199333,-78.9304019,3a,32.7y,25.39h,93.96t/data=!3m7!1e1!3m5!1saSnqTpHEKB52TY-luxFPow!2e0!6shttps:%2F%2Fstreetviewpixels-pa.googleapis.com%2Fv1%2Fthumbnail%3Fpanoid%3DaSnqTpHEKB52TY-luxFPow%26cb_client%3Dmaps_sv.tactile.gps%26w%3D203%26h%3D100%26yaw%3D331.58463%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656
Rare find, seems like North Carolina did it back in the early days when SPUI interchanges were introduced. This was done around 1994-1996.
https://www.google.com/maps/@35.2408695,-80.9389043,3a,48.9y,9.45h,93.16t/data=!3m6!1e1!3m4!1sZYAY1Hi1L2ax2eRagtYWYQ!2e0!7i16384!8i8192
Pennsylvania has also done it occasionally. This one is at the southern end of the Liberty Tunnel in Pittsburgh. Note the signals for the intersecting ramp have green arrows and red balls illuminated simultaneously (not permitted anymore) despite newer looking signal heads.
https://goo.gl/maps/9vxcZMrhp7MZQBh88
Quote from: MASTERNC on January 04, 2022, 07:15:38 PM
Pennsylvania has also done it occasionally. This one is at the southern end of the Liberty Tunnel in Pittsburgh. Note the signals for the intersecting ramp have green arrows and red balls illuminated simultaneously (not permitted anymore) despite newer looking signal heads.
https://goo.gl/maps/9vxcZMrhp7MZQBh88
Also off topic for this thread, but I'm intrigued by the use of blank-out "do not enter" signs (with red beacons) above regular "do not enter" signs for the ramp opposite to this view. Why would the blank-outs be necessary? Going up the ramp in Street View, there's a similar situation with "wrong way" signage. Is there ever a situation where those blank-out signs would turn off?