Thickest mast arms

[jakeroot]

Thick one outside Notre Dame, IN:
https://www.google.com/maps/@41.7101793,-86.2502648,3a,28y,12.31h,97.57t/data=!3m6!1e1!3m4!1s9Ybt5AWLKBG_IWpt0Fjobg!2e0!7i16384!8i8192?hl=en

But...you already...commented on this one....literally last week? :

Here is a thick one from South Bend, IN.

https://www.google.com/maps/@41.7101793,-86.2502648,3a,75y,245.1h,87.78t/data=!3m6!1e1!3m4!1s9Ybt5AWLKBG_IWpt0Fjobg!2e0!7i16384!8i8192

Looks Florida-style! Indiana is the last place I'd expect to see a big thick mast.

[STLmapboy]

Thick one outside Notre Dame, IN:
https://www.google.com/maps/@41.7101793,-86.2502648,3a,28y,12.31h,97.57t/data=!3m6!1e1!3m4!1s9Ybt5AWLKBG_IWpt0Fjobg!2e0!7i16384!8i8192?hl=en

But...you already...commented on this one....literally last week? :

Here is a thick one from South Bend, IN.

https://www.google.com/maps/@41.7101793,-86.2502648,3a,75y,245.1h,87.78t/data=!3m6!1e1!3m4!1s9Ybt5AWLKBG_IWpt0Fjobg!2e0!7i16384!8i8192

Looks Florida-style! Indiana is the last place I'd expect to see a big thick mast.

Damn, I knew I'd seen it before! Deja vu

[STLmapboy]

A new, thick North Dakota install: https://www.google.pl/maps/@46.8770376,-96.9261623,3a,75y,89.4h,96.44t/data=!3m6!1e1!3m4!1sxEyAEg8m2Q_WzqF6i0QuaA!2e0!7i16384!8i8192

[Great Lakes Roads]

Thick mast arm in northern Idaho:

https://www.google.com/maps/@47.699068,-116.807634,3a,75y,111.3h,90t/data=!3m6!1e1!3m4!1sxG-6C6JarJfjPEiMRPP3wQ!2e0!7i16384!8i8192

[STLmapboy]

Thick mast arm in northern Idaho:

https://www.google.com/maps/@47.699068,-116.807634,3a,75y,111.3h,90t/data=!3m6!1e1!3m4!1sxG-6C6JarJfjPEiMRPP3wQ!2e0!7i16384!8i8192

Look at what's holding it to the poles.

[STLmapboy]

Just saw this thing driving from northern MN to St Louis. Gives many BGS's a run for their money

[tchafe1978]

Just saw this thing driving from northern MN to St Louis. Gives many BGS's a run for their money

https://goo.gl/maps/3phkgjZanvMSNiay5

That one is similar to this on in Dubuque, IA, though your example is thicker. Iowa sure likes their large signal trusses.

[RestrictOnTheHanger]

Just saw this thing driving from northern MN to St Louis. Gives many BGS's a run for their money

Strange that there are 2 green arrows on the rightmost signal

[Mccojm]

I don't have any pictures and google earth doesn't have street view as these signals are new, but region 10 NYSDOT put up its last 75ft mast arm a few weeks ago. There was a 75ft arm that went up a couple months ago and immediately began to buckle at the elbow. Lay I heard region is moving forward with 65ft max arms now. Also the riser poles for our signal mast arms and overhead BGS are ridiculously massive... designed to withstand cat 5 hurricanes apparently.

[STLmapboy]

As far as conventional mast/mast-arms, I've noticed it's just a trend in new traffic-light mast-arm design in many states. 

California:
CA-262 in Fremont
CA-1 in Carmel-By-The-Sea
CA-79 in Temecula

With CA it's not so much the arm itself as the pole on the side. I drove by today on a vacation: examples at 5 & Encinitas Blvd and 5 & Del Mar Heights. The new ramp metering signal at 5 & Manchester is also endowed with tremendous girth, more so than most conventional mast arms.

[Revive 755]

I don't have any pictures and google earth doesn't have street view as these signals are new, but region 10 NYSDOT put up its last 75ft mast arm a few weeks ago. There was a 75ft arm that went up a couple months ago and immediately began to buckle at the elbow. Lay I heard region is moving forward with 65ft max arms now. Also the riser poles for our signal mast arms and overhead BGS are ridiculously massive... designed to withstand cat 5 hurricanes apparently.

So what happens if they need to position signal heads but a mast arm longer than 65 feet would be required:  Do they use a bridge setup (similar to the Iowa example) or switch to span wire?

[RestrictOnTheHanger]

I don't have any pictures and google earth doesn't have street view as these signals are new, but region 10 NYSDOT put up its last 75ft mast arm a few weeks ago. There was a 75ft arm that went up a couple months ago and immediately began to buckle at the elbow. Lay I heard region is moving forward with 65ft max arms now. Also the riser poles for our signal mast arms and overhead BGS are ridiculously massive... designed to withstand cat 5 hurricanes apparently.

Where exactly is this? That has to be one massive arm.

@Revive: span wires are usually used for bigger intersections. R10 (Long Island) only started using mast arms on state installations relatively recently. Nassau county uses them by default, local agencies in Suffolk sometimes use them now too.

[STLmapboy]

Well among the non-monotubes this may take the cake for thickest.

[ozarkman417]

Well among the non-monotubes this may take the cake for thickest.

1. I took a single click after looking at the mast, to find out it replaces a span wire.
2. that one is a lot thicker than the rest at the intersection.. must be because that one holds twice the number of signals as the rest.

[brad2971]

Colo Springs is traditionally a span wire hub, but a newer install has this industrial style mast. Take a look at what's holding the arm to the pole. 

That's been the latest CDOT standard mast for traffic lights for at least the last 15 years, since Powers Blvd is also SH 21. Now, if you go up Fountain Blvd/US 24 from that intersection, you'll see the latest Colorado Springs standard mast.

https://www.google.com/maps/@38.81367,-104.7576527,3a,37.5y,176.58h,94.29t/data=!3m6!1e1!3m4!1sk_5JOuhgHxUrWXwrN67tPA!2e0!7i16384!8i8192?hl=en/

[STLmapboy]

Just a tad bulky...
Nice to see more masts in Tennesse though!

[roadman65]

Florida has been installing bulky ones a lot. In Lakeland thin mast arms are being replaced with fat ones little by little.

[STLmapboy]

Florida has been installing bulky ones a lot. In Lakeland thin mast arms are being replaced with fat ones little by little.

The same trend appears to be happening on the opposite coast.

[plain]

Well among the non-monotubes this may take the cake for thickest.

1. I took a single click after looking at the mast, to find out it replaces a span wire.
2. that one is a lot thicker than the rest at the intersection.. must be because that one holds twice the number of signals as the rest.

That's exactly the reason why they're so thick.

Here in the Richmond metro they have been popping up in a few places (but only on VDOT maintained roads, not inside the city).

Besides that US 360 one and the US 250 one listed in the OP, here's a couple more:

US 60 WB just west of VA 150
https://maps.app.goo.gl/VDGF9dyXDzCySrCA7

Further west but this time on the EB side. This one doesn't have as many signals as the others but I suspect it's thick because of how far away the mast is from them
https://maps.app.goo.gl/qeMRSzb2PqwKfDWL7

[jdbx]

Florida has been installing bulky ones a lot. In Lakeland thin mast arms are being replaced with fat ones little by little.

The same trend appears to be happening on the opposite coast.

I have also noticed that all of the recent installations or upgrades that I have seen in my area are with much thicker poles of this type.  I wonder if the CalTrans or state design standards have changed?  It seems like that would be the only explanation for such a widespread but rather sudden change in design.

[roadman65]

Texas though keeps there (from what I have seen as I have not yet visited West Texas yet) and only along IH 20, IH 30, and IH 35 to see what the signals are here.
https://www.flickr.com/photos/54480415@N08/49455356418/in/dateposted-public/

This one at US 271's southern terminus (yes it does not connect to US 69 in the same city) I kind of like over the big fat ones.  Only drawback is that it is too long as they could have used one three feet shorter.

[STLmapboy]

Texas though keeps there (from what I have seen as I have not yet visited West Texas yet) and only along IH 20, IH 30, and IH 35 to see what the signals are here.
https://www.flickr.com/photos/54480415@N08/49455356418/in/dateposted-public/

This one at US 271's southern terminus (yes it does not connect to US 69 in the same city) I kind of like over the big fat ones.  Only drawback is that it is too long as they could have used one three feet shorter.

I guess it looks a bit flimsy to me. For new installs I like stuff like this (also in Tyler).

[MCRoads]

This one in Boston is pretty large for its size. And a similar mast arm is not nearly as thick.

[roadman65]

This one in Boston is pretty large for its size. And a similar mast arm is not nearly as thick.

Considering Boston copied New Jersey in their truss style mast arms, this is a big change for them.

[STLmapboy]

Somewhat industrial in Huntsville, TX.