US Bridges

SR-7 Southern Pkw. over Desert Canyon Parkway

Fair

Washington County, Utah · Near St.George Airport · Structure no. 1F 766

Built
2010
15 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
110 ft
1 main span
Daily traffic
8,215
2021 count
Owner
State
State Highway Agency

About this bridge

SR-7 Southern Pkw. over Desert Canyon Parkway is a prestressed concrete stringer/multi-beam or girder carrying SR-7 Southern Pkw. over Desert Canyon Parkway in Washington County, Utah. It was built in 2010, so it is 15 years old, younger than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,215 vehicles a day, roughly 17% of them trucks, projected to reach 9,858 by 2041. The structure is 110 ft (33.6 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesSR-7 Southern Pkw.
CrossesDesert Canyon Parkway
LocationNear St.George Airport
RouteState Highway 7
CountyWashington County
StateUtah
Coordinates37.00877, -113.51353
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length110 ft (33.6 m)
Longest span107 ft (32.6 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,215 (2021)
Projected traffic9,858 by 2041
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-7 Southern Pkw. over Desert Canyon Parkway built?

It was built in 2010, making it 15 years old in 2025.

What condition is SR-7 Southern Pkw. over Desert Canyon Parkway in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2023.

How much traffic does SR-7 Southern Pkw. over Desert Canyon Parkway carry?

About 8,215 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is SR-7 Southern Pkw. over Desert Canyon Parkway?

The structure is 110 ft (33.6 m) long with a longest span of 107 ft (32.6 m) and a deck 43 ft wide.

Who owns SR-7 Southern Pkw. over Desert Canyon Parkway?

It is owned by the State Highway Agency.