Green Interstates - state or locally maintained?

[Pink Jazz]

I would like to know, in which states are the green Business Interstates state maintained vs. locally maintained?

Here is what I know:

• Arizona - Mostly state maintained, although I think there may be at least one locally maintained one.
• California - Mostly locally maintained.
• Colorado - State maintained.
• Nevada - Locally maintained except if overlapping with an existing U.S. or State Route.
• New Mexico - State maintained.
• North Carolina - State maintained (used on old Interstate alignments).

[jakeroot]

Within Washington State, the only two business interstates that I know of (I-90 Business in Spokane and I-5 Business Loop in Castle Rock) seem to be locally maintained, just by looking at the pavement markings.

[froggie]

In short, Minnesota's Interstate business loops are like Nevada's:  locally maintained unless it's co-located with a state or US route.

[SectorZ]

For historical purposes, as in neither exist anymore...

I-495 Biz Spur in MA is the Lowell Connector, fully state maintained.
https://www.aaroads.com/guide.php?page=i0495bma

I-89 Biz Loop in Lebanon NH, per current NH highway maps is half state maintained, half maintained by the city.
http://www.interstate-guide.com/business-routes/bus89.html
http://www.nh.gov/dot/org/operations/highwaymaintenance/index.htm (District 2 map PDF)

Of course neither were signed as such in my lifetime, outside of one sign on the approach to the Lowell Connector on Plain Ave, and one random confirmation shield in Lebanon on the old routing of the 89 BL.

[rawmustard]

In Michigan, business Interstates are state trunklines. In the past, a segment of Ann Arbor's Business Loop 94 was maintained by the city, but MDOT has taken it back over.

[oscar]

California - Mostly locally maintained.

Yes, but state-designated, plus the state maintains signage on the freeway pointing travelers to the business loop. ISTM you sometimes have routes "decommissioned but with remnant signage", where Caltrans has removed the business route signage from the freeway, but the local government maintaining the business route takes its sweet time about removing its signage.

[PHLBOS]

In PA, any road with an SR number is state maintained.  That said, Business Loop I-83 and Business Loop I-376 are both state maintained.

[WashuOtaku]

South Carolina is state maintained.

[dfwmapper]

Business routes in Texas are part of the state highway system and are state-maintained. If/when they are returned to local control, the business designation and related signs are removed.

[SD Mapman]

WY: State-maintained, good signage
SD: Usually not state-maintained, signage varies from town to town (in some cases the business loop could be an unsigned state route signed as a business loop)

[corco]

I don't think any business loops in AZ are locally maintained.

MT: All are on the state route system, either as primary/secondary or urban routes. Many of Montana's secondary and urban routes are locally maintained despite technically being state highways, so I think a few loops are actually locally maintained, at least in pieces. The state still has some level of oversight on system routes that are locally maintained, though it's not totally clear how much.

ID: State maintained

Within Washington State, the only two business interstates that I know of (I-90 Business in Spokane and I-5 Business Loop in Castle Rock) seem to be locally maintained, just by looking at the pavement markings.

There is the loop in Moses Lake too, which is state maintained. That said, I don't think WSDOT officially wants any part of business loops - if local areas want them they'll do what is necessary with AASHTO to get them signed as they did with the Spokane Valley loop a couple years ago, but the local jurisdictions are responsible for them, unless they just happen to be along state highways.

[jakeroot]

There is the loop in Moses Lake too, which is state maintained.

Thank you. Didn't notice that one before. That said, I still would have guessed that it was maintained by Moses Lake. Lots of the crosswalks got repainted lately, and most are the parallel lines type, which WSDOT doesn't use (this is how I can tell who maintains roads, the crosswalks -- many in my area have two different styles, depending on who maintains which leg of the intersection -- it's very strange).

[Brandon]

I would like to know, in which states are the green Business Interstates state maintained vs. locally maintained?

Never understood the term "green" interstate.  Where I first saw them, Michigan, they're known as BL-nn and BS-nn for Business Loop and Business Spur, i.e. BL-94, BS-75.  Sure, the shield is green, but the words are "Business Loop" and "Business Spur".

[corco]

There is the loop in Moses Lake too, which is state maintained.

Thank you. Didn't notice that one before. That said, I still would have guessed that it was maintained by Moses Lake. Lots of the crosswalks got repainted lately, and most are the parallel lines type, which WSDOT doesn't use (this is how I can tell who maintains roads, the crosswalks -- many in my area have two different styles, depending on who maintains which leg of the intersection -- it's very strange).

The loop is entirely concurrent with State Routes 17 and 171, so it'd be odd if they were locally maintained because I don't think WSDOT does formal local maintenance agreements, but I guess it's possible.

[Revive 755]

*Missouri:  Almost all are state maintained, though there could be a few short stretches on some that are locally maintained.
*Illinois:  I'm pretty sure all of them are state maintained.

[Rover_0]

Utah: State-maintained...often co-signed with given state routes (though St. George is another matter).

[jakeroot]

There is the loop in Moses Lake too, which is state maintained.

Thank you. Didn't notice that one before. That said, I still would have guessed that it was maintained by Moses Lake. Lots of the crosswalks got repainted lately, and most are the parallel lines type, which WSDOT doesn't use (this is how I can tell who maintains roads, the crosswalks -- many in my area have two different styles, depending on who maintains which leg of the intersection -- it's very strange).

The loop is entirely concurrent with State Routes 17 and 171, so it'd be odd if they were locally maintained because I don't think WSDOT does formal local maintenance agreements, but I guess it's possible.

In most cases, I suspect you're right. However, I think they may have one or two stretches of state highway maintained locally. The best example I can think of right now is Pacific Avenue in Tacoma, which is legally State Route 7 (for most of its length) but the crosswalks (piano style, separate from WSDOT's continental style), signals (left turns are towers a la Illinois, vs doghouses or FYA, both WSDOT's preferred signal style), and the length/width of the dashed lines (slightly narrower, closer spacing) are all different. South of the 512, the markings and signals all return to WSDOT style.

Other stretches include SR-163 in NW Tacoma and SR-99 in Seattle. Both of these seem to use the local markings over the state markings, ergo I suspect they are city-maintained.

[Pink Jazz]

There is the loop in Moses Lake too, which is state maintained.

Thank you. Didn't notice that one before. That said, I still would have guessed that it was maintained by Moses Lake. Lots of the crosswalks got repainted lately, and most are the parallel lines type, which WSDOT doesn't use (this is how I can tell who maintains roads, the crosswalks -- many in my area have two different styles, depending on who maintains which leg of the intersection -- it's very strange).

The loop is entirely concurrent with State Routes 17 and 171, so it'd be odd if they were locally maintained because I don't think WSDOT does formal local maintenance agreements, but I guess it's possible.

In most cases, I suspect you're right. However, I think they may have one or two stretches of state highway maintained locally. The best example I can think of right now is Pacific Avenue in Tacoma, which is legally State Route 7 (for most of its length) but the crosswalks (piano style, separate from WSDOT's continental style), signals (left turns are towers a la Illinois, vs doghouses or FYA, both WSDOT's preferred signal style), and the length/width of the dashed lines (slightly narrower, closer spacing) are all different. South of the 512, the markings and signals all return to WSDOT style.

Other stretches include SR-163 in NW Tacoma and SR-99 in Seattle. Both of these seem to use the local markings over the state markings, ergo I suspect they are city-maintained.

Note that traffic signals on state-maintained roads may be locally owned in many places.  For example, Grand Avenue (US 60) in the Phoenix area has a mix of signals owned by ADOT, MCDOT, and the various cities that it serves, but the entire road is still state-maintained.

[cl94]

In PA, any road with an SR number is state maintained.  That said, Business Loop I-83 and Business Loop I-376 are both state maintained.

Which is basically every road of semi-moderate importance outside of developed areas

[jakeroot]

Note that traffic signals on state-maintained roads may be locally owned in many places.  For example, Grand Avenue (US 60) in the Phoenix area has a mix of signals owned by ADOT, MCDOT, and the various cities that it serves, but the entire road is still state-maintained.

Even so, it's more than just the signals (that's just a give-away in most cases). The crosswalks and the street blades are usually indicative of the maintainer. In my Highway 7 example, the crosswalks are the piano type and the street blades are in the Tacoma style (Series C all caps). I'd be hard-pressed to suggest that the state maintains this road, despite the State Route designation.

[Kacie Jane]

Right, but still, just because Agency X (WSDOT in this case) is primarily responsible for the maintenance of a road, that doesn't mean that they're going to do 100% of the work on the road and won't let Agencies Y and Z do any work.

In particular, locally-designed street blades on state-maintained highways are something you can find pretty much anywhere.

[hbelkins]

Kentucky's lone "green" interstate is state-maintained and is co-signed with other routes for its entire length.

Interesting fact -- at one time, Business Loop I-24 was signed as Downtown Loop I-24. I don't think any of those signs remain, but I photographed one about 15 years ago.

[jakeroot]

Right, but still, just because Agency X (WSDOT in this case) is primarily responsible for the maintenance of a road, that doesn't mean that they're going to do 100% of the work on the road and won't let Agencies Y and Z do any work.

In particular, locally-designed street blades on state-maintained highways are something you can find pretty much anywhere.

So in relation to my original point, it is then possible that WSDOT does not 100% maintain I-90 Business within Moses Lake?

[SD Mapman]

Interesting fact -- at one time, Business Loop I-24 was signed as Downtown Loop I-24. I don't think any of those signs remain, but I photographed one about 15 years ago.

Sioux Falls also signs its business loop and spurs as Downtown, I guess cause all of them intersect in downtown.

[Rothman]

*scratches head*

Um...

Right.  Green interstate shields.

Erm...

We don't have any here in NY.