US Bridges

SR-12 over Campbell Creek

Fair

Garfield County, Utah · South Side of Tropic · Structure no. 0V1419

Built
1958
67 years old
Condition
Fair
inspected April 2023
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
1,845
2021 count
Owner
State
State Highway Agency

About this bridge

SR-12 over Campbell Creek is a steel culvert carrying SR-12 over Campbell Creek in Garfield County, Utah. It was built in 1958, so it is 67 years old, older 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 1,845 vehicles a day, roughly 20% of them trucks, projected to reach 2,214 by 2041. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSR-12
CrossesCampbell Creek
LocationSouth Side of Tropic
RouteState Highway 12
CountyGarfield County
StateUtah
Coordinates37.6225, -112.08167
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating106.5 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 15
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic1,845 (2021)
Projected traffic2,214 by 2041
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

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-12 over Campbell Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is SR-12 over Campbell Creek 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 April 2023.

How much traffic does SR-12 over Campbell Creek carry?

About 1,845 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is SR-12 over Campbell Creek?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns SR-12 over Campbell Creek?

It is owned by the State Highway Agency.