User:Kevina/Salt Lake City Highway Classification

From OpenStreetMap Wiki
Jump to: navigation, search

See United States Roadway Classification Guidelines for an idea of how I went about classifying the area.

I frequently consulted Utah's Functional Classification map for the Salt Lake City urban area (,T:,1228) which shows what the City/State thinks each road should be. For areas I am familiar with I only used the functional classification as a guideline. For other areas I followed in more closely. In both cases major discrepancies are noted. The State of Utah does not assert any Copyright on the functional classification maps which means they are, in all likelihood, the public domain.

I also looked at the National Highway System (NHS) maps. However, for the most part, NHS routes are primary arterials and vise versa.


Bounding Streets: North Temple to I-80, I-15 to Foothill


Note: when I say "from 900 S" I mean "from 900 S southwards".

400 West: Tertiary to 600 S: Two lanes, important street for access to the Gateway

300 West: Primary from 400 S as it is part of US-89, than secondary. I'm not sure how far the secondary should go to though.

200 West: Tertiary from 900 S. It goes under the Convention Center, rather than stops like 100 S does, so someone must of thought it was important enough. Also, still two lanes.

West Temple: Secondary From 900 S to North template, three lanes for most of the way and also carries freeway traffic. Tertiary other From 900 S Southwards, I'm not so sure about this one.

Main Street: Tertiary, it is "main" street even though Salt Lake city keeps removing lanes.

State Street: Primary from 400 S Northwards. US-89, also a good route through town as the lights are well synchronized. Secondary otherwise. No longer US-89, that is the only reason.

200 and 300 East: Many may consider 300 East Tertiary but I refuse to consider it that from 900 S as 1) Part of it contains parking in the center of the street and only one lane in each direction (and thus in my view turned the street into a parking lot with stop lights), 2) There is a four way stop sign at 700 S. Instead I made 200 East tertiary as it is 2 lanes and has a stop light at 700 S. However from 900 S Northwards 200 East clearly becomes residential, and 300 East is a better route to take.

500 East: Tertiary for its entire length.

700 East: Primary for most of its length. A very important route through town, part of the NHS. Secondary from 400 South. I would not argue too much if someone things it should stay primary. I made it secondary because ownership changes from State to the City (and the difference is very noticeable) and it is no longer part of the NHS.

900 East: Tertiary

1100 East / Highland: Tertiary from 900 S, not so sure about this one. When it becomes highland it should defiantly be Tertiary. The other parts are also a good route to take. You cannot cross 800 S, though, thus I started it from 900 S.

1300 East: Secondary. Was a state route, freeway interchange.

1500 East: Not Tertiary. Lots of speed control measures to keep traffic on 1300 East, also doesn't really go anywhere.

1700 East: See others section.

1900 East: Nothing special about this road.

2100 and 2300 East: Tertiary, I'm not so sure but it does have stop lights rather than four way stop signs at 1300 S and 1700 S.

Foothill: Primary. Part of the NHS, I have not lived in the area long enough to know for sure, but it looks like it could of been part of I-215.


North Temple: Secondary. It use to be state route.

South Temple: Tertiary west of State, Secondary East. Important route for Avenues (not tertiary to distinguish it form other nearby roads), but degrades after state.

100 South: Tertiary east of West Temple. Even though most commercial maps don't consider this road special, it considered a collector by the state and the city. It carries university traffic and is two lanes the entire way and is clearly the better route to take when compared to 200 and 300 South as they are clearly residential East of 900 E.

200 South: Tertiary until 900 E. Two lanes, goes under the freeway, when they added trax, they kept it two lanes rather than removing a lane as they did with some other roads. East of 900 E it is clearly residential with stop signs at most every block.

300 South: Nothing special about this road. Also for part of the way there is parking in the center with only one lane each way.

400/500 South: Primary until 300 West than secondary. Very important route, part of the NHS. However the NHS stops at 700 E, but the road doesn't really change and part of it is also US-89. I'm kept it primary until 300 W when it changes ownership to the City, but I can see how it should be kept primary.

500 and 600 South: Primary from Freeway to State, secondary to 700 E, Tertiary to 900 E. There start off as one-way streets which carry freeway traffic in and out town, very important route, part of the NHS until 700 E. Ownership changes at State which is why I changes it to secondary, but I am no longer sure about that. East of 900 S they are clearly residential.

700 South: Nothing special about this road. Has two four way stop signs, TRAX goes down part of it. No dividing line, light traffic.

800 South / Sunnyside: Tertiary. Defiantly tertiary maybe secondary. Tertiary because it 1) goes under the freeway rather than intersects and 2) At-grade crossing on a major railroad line, and is in fact often blocked when trains stop on the track.

900 South: Tertiary from 300 West to 1300 S. Part of this way should be tertiary, i'm just not sure how far it should extend east.

1300 South: Secondary to 900 East, then ternary. Considered a minor arterial for the entire way, but I refuse to accept that, no arterial should have stop signs every other block, especially in the city. Thus I downgraded it to ternary after 1300 East.

1700 South: Tertiary. Considered a minor arterial, however I want to distinguish it from 1300 and 2100 South. It goes under the freeway rather than intersect and it has a level crossing on a major railroad line rather than a grade crossing. Also like 1300 East it has stop signs every other block from 900 East to 2100 East.

2100 South: Secondary until 2100 E than Tertiary as the main road becomes Parleys Way.

Parleys Way: Secondary.


1700 East: Tertiary from 2100 S northwards. It is considered a collector street and it does pass under the freeway. Also not sure if it should start at 1700 S or 2100 S.

2000 East: Tertiary from Parleys Canyon Boul to 3330 So. Like 1700 E passes under the freeway and considered a collector.

Parleys Canyon Boul: Tertiary. Considered a collector.

North Campus Dr, Wasatch Dr, South Campus Dr: Tertiary. These are major routes through the Univ. of Utah. They are probably maintained by the state, but they are not really state routes. Hence I think secondary is overkill.

Guardsman Way: Tertiary. Important route for getting to Sunyside from the Univ of Utah.


This area is almost entry residential. However they are some routes which are better to take than others to get through the area. Based on areal imagery it is fairly clear what those roads are. But I don't live in the area, and have only drove though it once, so I will gladly yield to someone who is more familiar with the area.


In general I am not that familiar with the streets outside of the core. Thus, as already stated, I followed the functional classification system map fairly closely. Major discrepancies are noted below. In addition, there are also a number of roads I upgraded to tertiary even though they are not considered collectors.

If you are familiar with any roads outside of the Salt Lake City core, fell free to adjust the classifications so they make more sense to you, but please send me a note so I know what is going on.

9000 South: It is part of the NHS, but it is not complete yet. I stopped the upgrade at Bangerter Highway.

5600 West: It is part of the NHS but it is also not complete yet. It closly parallels the Mountain View Corridor and has been selected as the preferred transit alternative. So ultimately it might be downgraded once the Mountain View Corridor is complete. Thus I will leave it as secondary.

Sunstone Rd, Atherton Dr, 1300 W, 4200 S: I'm really not sure about the tertiary classification on these. It drove through the area a few times and it seams like some of these roads should be upgraded from residential. I will gladly yield to someone more familiar than the area than I am.