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National Boards => General Highway Talk => Traffic Control => Topic started by: SR 228 on January 14, 2018, 06:19:13 AM

Title: Signals on gantries at intersections
Post by: SR 228 on January 14, 2018, 06:19:13 AM
After some searching I noticed there isn't a thread for this.
https://goo.gl/cBsMiR This is a set of all kinds of PV signals, which are mostly 3M, on a gantry, what a beauty.
Title: Re: Signals on gantries at intersections
Post by: index on January 14, 2018, 06:47:55 AM
https://www.google.com/maps/@42.4920137,-90.6656995,3a,25.8y,96.2h,93.4t/data=!3m6!1e1!3m4!1s2XvkJQz1DEUAWBABZWOAjw!2e0!7i13312!8i6656

Here's some signals on a gantry in Dubuque, IA.

https://www.google.com/maps/@35.2070266,-75.7008127,3a,60y,262.44h,87.21t/data=!3m6!1e1!3m4!1sEGhQ_0809HenR4TLlgSmlA!2e0!7i3328!8i1664

And here's some in Hatteras, NC. When it comes to masts for signals/displaying signals gantries are by far my favorite method, too bad they're not more common.
Title: Re: Signals on gantries at intersections
Post by: myosh_tino on January 14, 2018, 11:25:52 AM
One such example in San Jose, CA... https://goo.gl/maps/rC7ZSP1oWar.

This is the Taylor Street SPUI with CA-87.  I was about the post a GMSV link for the Bay Bridge metering lights until I saw the OP specifically ask for examples at intersections.
Title: Re: Signals on gantries at intersections
Post by: wanderer2575 on January 14, 2018, 12:11:17 PM
There's this one right in the center of the I-270/MD-189 SPUI in Rockville:
https://goo.gl/maps/Hgzk4PSYjyM2

And this might not be exactly what the OP had in mind, but there's a combination of signs and signals at the north end of I-180 in Cheyenne:

(https://i.imgur.com/toivDxZ.jpg)
Title: Re: Signals on gantries at intersections
Post by: Revive 755 on January 14, 2018, 01:00:28 PM
Quote from: index on January 14, 2018, 06:47:55 AM
https://www.google.com/maps/@42.4920137,-90.6656995,3a,25.8y,96.2h,93.4t/data=!3m6!1e1!3m4!1s2XvkJQz1DEUAWBABZWOAjw!2e0!7i13312!8i6656

Here's some signals on a gantry in Dubuque, IA.

Iowa seems to be quicker to switch to gantries for large intersections compared to other states.  Other Iowa examples:

* Coral Ridge Avenue at Holiday Road in Coralville (https://www.google.com/maps/@41.7006417,-91.6084596,3a,75y,156.6h,99.12t/data=!3m6!1e1!3m4!1ssPuD4k-YLh51Jled2kcn5A!2e0!7i13312!8i6656?hl=en)

* US 6 at Adventureland Drive near Des Moines (https://www.google.com/maps/@41.6584402,-93.4989511,3a,60y,55.25h,92.3t/data=!3m6!1e1!3m4!1sfS0xbbhD-9iSjmUug3Ldhg!2e0!7i13312!8i6656?hl=en)

* US 6 at 34th Street near Des Moines (https://www.google.com/maps/@41.6549047,-93.5031852,3a,60y,38.88h,87.63t/data=!3m6!1e1!3m4!1srDz8T4kQcAsHRA9qrw6pMw!2e0!7i13312!8i6656?hl=en)


In Illinois IDOT District 3 will mount signals on BGS gantries for roads that have interchanges with I-80:
* NB Ridge Road at the EB I-80 ramps (https://www.google.com/maps/@41.4614443,-88.2715123,3a,75y,3.45h,104.03t/data=!3m6!1e1!3m4!1sfQ2iioKP4B3gNBwt16kXEg!2e0!7i13312!8i6656?hl=en)

* SB Ridge Road at the I-80 WB ramps (https://www.google.com/maps/@41.4633235,-88.271562,3a,42y,206.3h,97.73t/data=!3m6!1e1!3m4!1scDvOW8Jj6OBIUvKpucWBtA!2e0!7i13312!8i6656?hl=en)

* NB IL 23 at the I-80 EB ramps (https://www.google.com/maps/@41.3748265,-88.8358995,3a,75y,359.76h,90.22t/data=!3m6!1e1!3m4!1sEci5yzWdoyZL4ejT0F5xtg!2e0!7i13312!8i6656?hl=en)

* SB IL 23 at the WB I-80 ramps (https://www.google.com/maps/@41.3775333,-88.8361143,3a,21.2y,172.75h,93.73t/data=!3m7!1e1!3m5!1spL4j-v6aZDcRhcnZUF6LPA!2e0!6s%2F%2Fgeo0.ggpht.com%2Fcbk%3Fpanoid%3DpL4j-v6aZDcRhcnZUF6LPA%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D45.11567%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656?hl=en)

This also happens frequently with overhead SPUI's (freeway goes under the cross road; for the opposite the signals seem to frequently be hung on the overpass) and for intersections near railroad crossings:

SPUI examples:
* MO 94 at I-70 in St. Charles, MO (https://www.google.com/maps/@38.77681,-90.5123889,3a,75y,98.16h,95.12t/data=!3m7!1e1!3m5!1sSjl6n5AYn2OvjcnsFhVZPg!2e0!6s%2F%2Fgeo0.ggpht.com%2Fcbk%3Fpanoid%3DSjl6n5AYn2OvjcnsFhVZPg%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D62.442215%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656?hl=en)

*MO 141 at Big Bend Road near St. Louis (https://www.google.com/maps/@38.5677003,-90.5005556,3a,75y,103.79h,90t/data=!3m7!1e1!3m5!1sJYcLZ2fgiBDALDFedn6dGw!2e0!6s%2F%2Fgeo3.ggpht.com%2Fcbk%3Fpanoid%3DJYcLZ2fgiBDALDFedn6dGw%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D107.43356%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656?hl=en)

*Rosa Parks Way at US 77 in Lincoln, NE (https://www.google.com/maps/@40.8025095,-96.7446703,3a,75y,17.7h,93.3t/data=!3m7!1e1!3m5!1siFu45WP_JMF4KApDoooY2A!2e0!6s%2F%2Fgeo0.ggpht.com%2Fcbk%3Fpanoid%3DiFu45WP_JMF4KApDoooY2A%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D98.55439%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656?hl=en)

*NE 2 at US 77 in Lincoln, NE (https://www.google.com/maps/@40.7873367,-96.7303246,3a,75y,60.08h,97.78t/data=!3m6!1e1!3m4!1sL7S0OZHZaStInpokaXcEVA!2e0!7i13312!8i6656?hl=en)

Railroad crossing examples:
* SB Wood Dale Road at IL 19 (https://www.google.com/maps/@41.9640132,-87.9787408,3a,49.7y,241.48h,103.08t/data=!3m6!1e1!3m4!1sCvbEewtCpdgMCAIaEY0aaw!2e0!7i13312!8i6656?hl=en)

* Wilke Road at US 14 (https://www.google.com/maps/@42.0932457,-88.0045673,3a,75y,354.93h,101.66t/data=!3m7!1e1!3m5!1sTR3ybz1oqxbD1dawGmBe4Q!2e0!6s%2F%2Fgeo0.ggpht.com%2Fcbk%3Fpanoid%3DTR3ybz1oqxbD1dawGmBe4Q%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D20.320936%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656?hl=en)

* IL 22 at IL 43 (https://www.google.com/maps/@42.1999505,-87.8634976,3a,75y,108.46h,90.47t/data=!3m7!1e1!3m5!1sMelt0p7nsqKjrFDhxOj9DQ!2e0!6s%2F%2Fgeo0.ggpht.com%2Fcbk%3Fpanoid%3DMelt0p7nsqKjrFDhxOj9DQ%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D86.67132%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656?hl=en)

* Pontoon Road at Missouri Avenue in Granite City, IL (https://www.google.com/maps/@38.7318068,-90.1365027,3a,75y,295.94h,100.18t/data=!3m7!1e1!3m5!1sY4EmkaxIC8wKs5ucYk6j0g!2e0!6s%2F%2Fgeo2.ggpht.com%2Fcbk%3Fpanoid%3DY4EmkaxIC8wKs5ucYk6j0g%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D20.272781%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656?hl=en)
Title: Re: Signals on gantries at intersections
Post by: traffic light guy on January 14, 2018, 01:38:36 PM
Here's one in Montgomeryville (This has Generation 2 Durasigs and 3Ms)
https://www.google.com/maps/@40.2476575,-75.2439546,3a,75y,225.76h,91.88t/data=!3m7!1e1!3m5!1sgQ0zdl1ZAWGsFTbmSeQVQw!2e0!6s%2F%2Fgeo2.ggpht.com%2Fcbk%3Fpanoid%3DgQ0zdl1ZAWGsFTbmSeQVQw%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D300.40457%26pitch%3D0%26thumbfov%3D100!7i13312!8i6656?hl=en&authuser=0
Title: Re: Signals on gantries at intersections
Post by: MASTERNC on January 14, 2018, 08:34:14 PM
Here's one along I-270 in Maryland.  Think they have done this for decades at this SPUI.

https://goo.gl/maps/Y2RmgkYGVw52
Title: Re: Signals on gantries at intersections
Post by: roadman65 on January 14, 2018, 09:09:25 PM
https://www.flickr.com/photos/54480415@N08/8701680431/in/album-72157633388148621/
https://www.flickr.com/photos/54480415@N08/6799126238/in/dateposted-public/
https://www.flickr.com/photos/54480415@N08/6945237857/in/dateposted-public/

Orange Blossom Trail between FL 528 and Oakridge Road has many of them thanks to a bureaucracy called the South Trail Board who was created to beautify the trail during the 90's.  They agreed that this was a step in the clean up of the red light district that plagued the county, by saying that they taxed the businesses to fund these ugly green gantries that cost over 300 grand to install.
Title: Re: Signals on gantries at intersections
Post by: jwolfer on January 15, 2018, 12:29:19 AM
Quote from: roadman65 on January 14, 2018, 09:09:25 PM
https://www.flickr.com/photos/54480415@N08/8701680431/in/album-72157633388148621/
https://www.flickr.com/photos/54480415@N08/6799126238/in/dateposted-public/
https://www.flickr.com/photos/54480415@N08/6945237857/in/dateposted-public/

Orange Blossom Trail between FL 528 and Oakridge Road has many of them thanks to a bureaucracy called the South Trail Board who was created to beautify the trail during the 90's.  They agreed that this was a step in the clean up of the red light district that plagued the county, by saying that they taxed the businesses to fund these ugly green gantries that cost over 300 grand to install.
I work along that section of "The Trail" ( no not selling meth or my body) I hate the look of the gantry traffic lights.  The gantries continue up to i4. The look is very 1990.

Interestingly  the biggest intersection at Sand Lake Road has a guy wire 4 box, not gantries

Z981
Title: Re: Signals on gantries at intersections
Post by: Hurricane Rex on January 15, 2018, 02:49:57 AM
Wenatchee Washington has one at the intersection of US 2/SR 28.
Title: Re: Signals on gantries at intersections
Post by: US71 on January 15, 2018, 10:34:43 AM
US 71 at US 30 Carroll, IA

https://goo.gl/maps/W3yiE1LMc712
Title: Re: Signals on gantries at intersections
Post by: 1995hoo on January 15, 2018, 10:40:48 AM
One of the stranger uses I've seen of a gantry for signals is on Stringfellow Road at Poplar Tree Road in Chantilly, Virginia. You may have to click into Street View to see this because the Google Maps app won't let me get a link directly from the Street View screen.

When you drive through here, the gantry seems huge for the location.

https://goo.gl/maps/TCGVD25iscm
Title: Re: Signals on gantries at intersections
Post by: Ian on January 15, 2018, 02:50:47 PM
There are two gantry-mounted signal intersections I know of currently in Maine. The first one is along ME 9 (Western Avenue) at Gorham Road (https://goo.gl/maps/4tqNQoeoAL32) in South Portland, and the second along ME 22 (County Road) at Spring Street (https://goo.gl/maps/ttVHLgxaDfD2) in Westbrook. There used to be another one in the same town at the west end of the Westbrook Arterial, but it was replaced some years ago. Here is the street view (https://goo.gl/maps/FshedJ527742) of the gantry from before it was taken down.

As for other examples, here are a handful I've come across in my travels...
Title: Re: Signals on gantries at intersections
Post by: roadman65 on January 15, 2018, 03:17:08 PM
Quote from: jwolfer on January 15, 2018, 12:29:19 AM
Quote from: roadman65 on January 14, 2018, 09:09:25 PM
https://www.flickr.com/photos/54480415@N08/8701680431/in/album-72157633388148621/
https://www.flickr.com/photos/54480415@N08/6799126238/in/dateposted-public/
https://www.flickr.com/photos/54480415@N08/6945237857/in/dateposted-public/

Orange Blossom Trail between FL 528 and Oakridge Road has many of them thanks to a bureaucracy called the South Trail Board who was created to beautify the trail during the 90's.  They agreed that this was a step in the clean up of the red light district that plagued the county, by saying that they taxed the businesses to fund these ugly green gantries that cost over 300 grand to install.
I work along that section of "The Trail" ( no not selling meth or my body) I hate the look of the gantry traffic lights.  The gantries continue up to i4. The look is very 1990.

Interestingly  the biggest intersection at Sand Lake Road has a guy wire 4 box, not gantries

Z981

I asked Orange County about that one, and they said because of the geometric of that intersection it was impossible to support a gantry across any of that intersection.  It is one of the widest intersections around, and thank God for that or we would have one more ugly gantry to look at.

Even when Walmart opened up, the South Trail Board still had power to install ugly green partial gantries instead of just going regular mast arm or doing a span wire.  Even in Kissimmee where they reconfigured US 192 at both JYP and at Main Street, they were allowed to go with brown mast arms rather than recreate the span wire design of 1989 when the original signals were erected from Oak Street to Hoagland Blvd. when FDOT added a third lane each way from its previous 4 lane.  Here that idiot Board wants to keep forever the look of the grene and any new signals put up will have to be a green bracket or trusses.

Title: Re: Signals on gantries at intersections
Post by: kphoger on January 15, 2018, 04:02:04 PM
Wichita has this one. (https://goo.gl/maps/X15YULYrG4s)
Title: Re: Signals on gantries at intersections
Post by: roadman65 on January 15, 2018, 04:07:55 PM
Quote from: Ian on January 15, 2018, 02:50:47 PM
There are two gantry-mounted signal intersections I know of currently in Maine. The first one is along ME 9 (Western Avenue) at Gorham Road (https://goo.gl/maps/4tqNQoeoAL32) in South Portland, and the second along ME 22 (County Road) at Spring Street (https://goo.gl/maps/ttVHLgxaDfD2) in Westbrook. There used to be another one in the same town at the west end of the Westbrook Arterial, but it was replaced some years ago. Here is the street view (https://goo.gl/maps/FshedJ527742) of the gantry from before it was taken down.

As for other examples, here are a handful I've come across in my travels...

  • VA 286 (Fairfax County Parkway) at Sunrise Valley Drive (https://goo.gl/maps/7tLiraRPxXR2) in Reston, Virginia
  • I-25 at the US 550/NM 165 SPUI (https://goo.gl/maps/WXQLwBo4Ngt) in Bernalillo, New Mexico
  • I-15 at the U-265 (University Parkway) SPUI (https://goo.gl/maps/ZZTRi9jzoo62) in Orem, Utah
  • I-215 at the Eastridge/Eucalyptus Avenue SPUI (https://goo.gl/maps/2Qx7xX9tFrR2) in Moreno Valley, California
Wow Caltrans not using a mast arm set up!  Also only two signal heads per direction?   That is odd considering California does what Illinois does and mounts side signal heads in addition to the MUTCD overheads.

Edit: Now I see them, as they are behind the image in the caption.
Title: Re: Signals on gantries at intersections
Post by: roadman65 on January 15, 2018, 04:14:50 PM
https://www.google.com/maps/@40.7320094,-74.0444069,3a,75y,270h,90t/data=!3m6!1e1!3m4!1soMLoy5Kn87ewcofVRVz04g!2e0!7i13312!8i6656

I see this one in Jersey City, NJ at one of I-78's signalized intersections is still here.
Title: Re: Signals on gantries at intersections
Post by: UCFKnights on January 15, 2018, 05:35:40 PM
Quote from: roadman65 on January 14, 2018, 09:09:25 PM
https://www.flickr.com/photos/54480415@N08/8701680431/in/album-72157633388148621/
https://www.flickr.com/photos/54480415@N08/6799126238/in/dateposted-public/
https://www.flickr.com/photos/54480415@N08/6945237857/in/dateposted-public/

Orange Blossom Trail between FL 528 and Oakridge Road has many of them thanks to a bureaucracy called the South Trail Board who was created to beautify the trail during the 90's.  They agreed that this was a step in the clean up of the red light district that plagued the county, by saying that they taxed the businesses to fund these ugly green gantries that cost over 300 grand to install.
I kind of like them for the area. I just wish they would install the signals with the bottom aligned to the bottom of the gantry and add a near side signal to each of them. They've aged better then the pink sidewalks.

I think there is a proposal to continue it beyond I-4, they've given OBT near downtown a very similar treatment (although not done quite as well, they didn't bury all the powerlines and mounted the street lights to the power poles, often with mismatched arms with no rhyme or reason). They have a 1.5 mile gap now.
Title: Re: Signals on gantries at intersections
Post by: cl94 on January 15, 2018, 05:51:44 PM
Alum Creek Drive at Groveport Rd (https://www.google.com/maps/@39.8683616,-82.9352306,3a,54y,169.55h,86.3t/data=!3m6!1e1!3m4!1sS2IxacqS3dVHjokiU-LaVw!2e0!7i13312!8i6656), Columbus, OH. This one is a little weird because it's also a superstreet with a grade-separated bypass for cross road through traffic.
Title: Re: Signals on gantries at intersections
Post by: roadfro on January 15, 2018, 08:09:57 PM
From Nevada, all in the Las Vegas area:

Older installations installed due to Las Vegas Blvd North running on a sharp diagonal, and all but the last being a simple truss-style:Newer installations are all bulky monotubes:
Note that these are all installed on current/former state highways, or at interchanges with state highways, so they seem to be an NDOT thing–especially at SPUIs. By comparison, some SPUI intersections along the 215 beltway, designed by Clark County, instead use two separate mast arms at the center of the bridge (example: Green Valley Pkwy & I-215 ramps, Henderson (https://www.google.com/maps/@36.0247103,-115.0851484,3a,75y,153.5h,83.47t/data=!3m6!1e1!3m4!1suqMQtEVSuQn2QqFY2girhQ!2e0!7i13312!8i6656)).
Title: Re: Signals on gantries at intersections
Post by: jakeroot on January 15, 2018, 08:25:57 PM
Quote from: roadman65 on January 15, 2018, 04:07:55 PM
Quote from: Ian on January 15, 2018, 02:50:47 PM
As for other examples, here are a handful I've come across in my travels...

I-215 at the Eastridge/Eucalyptus Avenue SPUI (https://goo.gl/maps/2Qx7xX9tFrR2) in Moreno Valley, California[/li][/list]

Wow Caltrans not using a mast arm set up!  Also only two signal heads per direction?   That is odd considering California does what Illinois does and mounts side signal heads in addition to the MUTCD overheads.

Edit: Now I see them, as they are behind the image in the caption.

Still a bit odd for them to not use a signal side-mounted on (in this case) the gantry. California is mental about signal placement, so to see them only using one side-mounted signal is odd. Especially since it's a stop line signal, and those have traditionally been extra-credit (although have become ubiquitous lately).

All told, the only side-mounted signals you really see at SPUIs are those mounted on their own exclusive poles, usually on the near or far side of the intersection. That said, here's a couple examples of signals being mounted on or near the signal gantry: Tucson, AZ (https://goo.gl/5MFJXo); Langley, BC (https://goo.gl/uN5sE1) (a rare monotube signal gantry -- BC rarely utilises this).
Title: Re: Signals on gantries at intersections
Post by: paulthemapguy on January 15, 2018, 11:03:56 PM
There's a section of Omaha that likes using giant gantries mounted diagonally over their larger intersections. 
This is similar to the Iowa ones mentioned upthread.  https://goo.gl/maps/oay7FrJXkDC2

Someone else mentioned that IDOT District 3 will mount signal heads on sign gantries at the grade intersections with freeway interchanges.  Here's another one at I-57 and IL-17 in Kankakee https://goo.gl/maps/NfHSRgbBeSA2

Title: Re: Signals on gantries at intersections
Post by: US 89 on January 16, 2018, 12:34:03 AM
In Utah, every SPUI with the freeway under the cross-street mounts all the lights onto one big monotube, and there are at least 11 of these. There are also cases like this (https://goo.gl/maps/qS2tp7MZK3Q2) and this (https://goo.gl/maps/d91TiQhrsVo), which are a traffic light and BGS rolled into one.

There's also this (https://goo.gl/maps/k57zxxhsd2T2). It's a weird intersection, and it looks like the plan is to convert it into a full interchange at some point.
Title: Re: Signals on gantries at intersections
Post by: jwolfer on January 16, 2018, 04:37:50 AM
Quote from: UCFKnights on January 15, 2018, 05:35:40 PM
Quote from: roadman65 on January 14, 2018, 09:09:25 PM
https://www.flickr.com/photos/54480415@N08/8701680431/in/album-72157633388148621/
https://www.flickr.com/photos/54480415@N08/6799126238/in/dateposted-public/
https://www.flickr.com/photos/54480415@N08/6945237857/in/dateposted-public/

Orange Blossom Trail between FL 528 and Oakridge Road has many of them thanks to a bureaucracy called the South Trail Board who was created to beautify the trail during the 90's.  They agreed that this was a step in the clean up of the red light district that plagued the county, by saying that they taxed the businesses to fund these ugly green gantries that cost over 300 grand to install.
I kind of like them for the area. I just wish they would install the signals with the bottom aligned to the bottom of the gantry and add a near side signal to each of them. They've aged better then the pink sidewalks.

I think there is a proposal to continue it beyond I-4, they've given OBT near downtown a very similar treatment (although not done quite as well, they didn't bury all the powerlines and mounted the street lights to the power poles, often with mismatched arms with no rhyme or reason). They have a 1.5 mile gap now.
I like the concrete pavement on OBT north of I 4 up to about the Parliament House... But signal timing sucks, which is normal for Orange County

Z981

Title: Re: Signals on gantries at intersections
Post by: roadfro on January 19, 2018, 10:54:41 AM
Quote from: jakeroot on January 15, 2018, 08:25:57 PM
Still a bit odd for them to not use a signal side-mounted on (in this case) the gantry. California is mental about signal placement, so to see them only using one side-mounted signal is odd. Especially since it's a stop line signal, and those have traditionally been extra-credit (although have become ubiquitous lately).

All told, the only side-mounted signals you really see at SPUIs are those mounted on their own exclusive poles, usually on the near or far side of the intersection. That said, here's a couple examples of signals being mounted on or near the signal gantry: Tucson, AZ (https://goo.gl/5MFJXo); Langley, BC (https://goo.gl/uN5sE1) (a rare monotube signal gantry -- BC rarely utilises this).

I didn't realize until you posted this, but all those Nevada SPUI intersections I posted also follow this pattern. No pole-mounted signal heads on the main mast/monotube poles (but always a near-side pole mount for the through movement and a way-far-side pole mount for the left turn movement).
Title: Re: Signals on gantries at intersections
Post by: intelati49 on January 19, 2018, 11:19:26 AM
Division and National in Springfield, MO (https://www.google.com/maps/@37.2259807,-93.2756536,3a,75y,100.54h,86.47t/data=!3m6!1e1!3m4!1skTKdePs2-3krSi8OLmJ3tw!2e0!7i13312!8i6656)
Title: Re: Signals on gantries at intersections
Post by: kj3400 on January 20, 2018, 09:05:37 PM
There's these two on Broening Hwy at the Port of Baltimore:

https://goo.gl/maps/XLM7etM6Yj52
https://goo.gl/maps/uizSxfqmCpA2
Title: Re: Signals on gantries at intersections
Post by: Brian556 on January 20, 2018, 11:21:13 PM
In general, I hate signals on gantries. This is because the gantries create so much visual clutter, and because they are so large that they dwarf the signal heads, making them less visible.
Title: Re: Signals on gantries at intersections
Post by: jakeroot on January 20, 2018, 11:24:45 PM
Quote from: Brian556 on January 20, 2018, 11:21:13 PM
In general, I hate signals on gantries. This is because the gantries create so much visual clutter, and because they are so large that they dwarf the signal heads, making them less visible.

Agreed. They can be extremely bulky. The monotube ones are okay, but the ones that use actual trusses are too busy and definitely harm signal visibility. Things would be better if the states that used these big gantries all used backplates, but not all do.
Title: Re: Signals on gantries at intersections
Post by: jay8g on January 21, 2018, 02:20:03 AM
Oregon hangs signal heads from BGS gantries (https://www.google.com/maps/@45.5182961,-122.5646375,3a,75y,90t/data=!3m6!1e1!3m4!1sJ5t9BO5B7a2Tls3h2hXj3Q!2e0!7i13312!8i6656?hl=en) all the time. I'm really not a fan, since it feels like all the signage would severely distract from the signal indications, which are almost always the most important piece of information.

WSDOT will install signals on gantries from time to time, but this (https://www.google.com/maps/@47.964374,-122.1994676,3a,75y,94.42h,95.32t/data=!3m6!1e1!3m4!1sv-iL0tGdAhgawreSlo-FNw!2e0!7i13312!8i6656?hl=en) is the closest I can find to a combo sign-signal gantry. I don't particularly mind the use of a monotube gantry for signal heads, but the use of a single, diagonal gantry seems a bit iffy for signal visibility. (Then again, I've never had issues with this monster of an intersection (https://www.google.com/maps/@47.595785,-122.3274379,3a,78.8y,300.97h,106.93t/data=!3m6!1e1!3m4!1skWaLbuof5VjDH2Yk7BVRvw!2e0!7i13312!8i6656?hl=en), so maybe it's not that big of issue anyways.)
Title: Re: Signals on gantries at intersections
Post by: mapman1071 on January 21, 2018, 10:10:53 PM
Quote from: jakeroot on January 15, 2018, 08:25:57 PM
    Quote from: roadman65 on January 15, 2018, 04:07:55 PM
    Quote from: Ian on January 15, 2018, 02:50:47 PM
    As for other examples, here are a handful I've come across in my travels...

    I-215 at the Eastridge/Eucalyptus Avenue SPUI (https://goo.gl/maps/2Qx7xX9tFrR2) in Moreno Valley, California[/li][/list]

    Wow Caltrans not using a mast arm set up!  Also only two signal heads per direction?   That is odd considering California does what Illinois does and mounts side signal heads in addition to the MUTCD overheads.

    Edit: Now I see them, as they are behind the image in the caption.

    Still a bit odd for them to not use a signal side-mounted on (in this case) the gantry. California is mental about signal placement, so to see them only using one side-mounted signal is odd. Especially since it's a stop line signal, and those have traditionally been extra-credit (although have become ubiquitous lately).

    All told, the only side-mounted signals you really see at SPUIs are those mounted on their own exclusive poles, usually on the near or far side of the intersection. That said, here's a couple examples of signals being mounted on or near the signal gantry: Tucson, AZ (https://goo.gl/5MFJXo); Langley, BC (https://goo.gl/uN5sE1) (a rare monotube signal gantry -- BC rarely utilises this).
    The Tucson one (Broadway Blvd @ AZ 210 (Barraza-Aviation Parkway)) may be removed or replaced when the Freeway is extended NW to I-10 near St Marys Road.
    Title: Re: Signals on gantries at intersections
    Post by: jakeroot on January 23, 2018, 08:40:00 PM
    Quote from: roadfro on January 19, 2018, 10:54:41 AM
    Quote from: jakeroot on January 15, 2018, 08:25:57 PM
    Still a bit odd for them to not use a signal side-mounted on (in this case) the gantry. California is mental about signal placement, so to see them only using one side-mounted signal is odd. Especially since it's a stop line signal, and those have traditionally been extra-credit (although have become ubiquitous lately).

    All told, the only side-mounted signals you really see at SPUIs are those mounted on their own exclusive poles, usually on the near or far side of the intersection. That said, here's a couple examples of signals being mounted on or near the signal gantry: Tucson, AZ (https://goo.gl/5MFJXo); Langley, BC (https://goo.gl/uN5sE1) (a rare monotube signal gantry -- BC rarely utilises this).

    I didn't realize until you posted this, but all those Nevada SPUI intersections I posted also follow this pattern. No pole-mounted signal heads on the main mast/monotube poles (but always a near-side pole mount for the through movement and a way-far-side pole mount for the left turn movement).

    Really strange. I was starting to believe that perhaps these large gantries weren't capable of supporting signals mounted to their masts, but it would appear as though Caltrans/NDOT simply don't bother. Here's another gantry in Tucson, AZ (also at a SPUI) with mast-mounted signals: https://goo.gl/JRyyY7. In a bizarre twist, the SPUI directly south of that link has zero pole-mounted signals for the through movement (just three overhead signals): https://goo.gl/PyyEQa. I've never seen an intersection in Tucson without a pole-mounted through head. No excuse here, since the pedestrian refuge is huge, and there's no gantry to bother with (since the SPUI is "subterranean").

    Looking around other states and countries known for their use of post-mounted signals...

    - Australia uses regular mast arms and median-mounted signals, as is the norm there (no SPUIs in New Zealand)
    - Arizona seems to mostly use regular mast arms at SPUIs, but those with gantries lack mast-mounted signals (Tucson's two examples seem to be the exception)
    - Minnesota uses near and far signals, but nothing on the side of the gantry
    - Illinois uses near signals, but nothing on the side of the gantry
    - Neither Wisconsin nor Colorado seem to have any SPUIs with overpasses
    - Idaho uses near and far signals (at least in Boise), but again, nothing on the mast.

    Basically, Tucson seems to be the only place in the US where signals are mounted to the gantry mast. I'm still stunned that neither California nor Nevada have installed any on masts before. The only reason I can think of, as to why they wouldn't bother, would be because the masts are too far to the right for the signals to be of any use. And that specifically seems to be the case rather often. But why no signal in the pedestrian refuge area on the edges of the middle of the intersection (between the off and on ramps), I couldn't say. Seems like a great place to put one.
    Title: Re: Signals on gantries at intersections
    Post by: jakeroot on February 06, 2018, 04:47:48 PM
    This isn't quite the same thing, but I can't help but appreciate the complexity of this temporary signal mast arm. Used last summer in Downtown Spokane (https://goo.gl/YscazK) during a signal replacement project, the mast arm bears some resemblance to the overhead sign gantries used in some European countries (https://goo.gl/NMizYB), and also Florida (https://goo.gl/D9ap5N) (although on a much smaller scale).

    (https://i.imgur.com/dmhQKee.png)
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