US Bridges

SR-14 over Coal Creek

Fair

Iron County, Utah · 450 East Center St. Cedar · Structure no. 0F 542

Built
1988
37 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
78 ft
1 main span
Daily traffic
2,870
2014 count
Owner
State
State Highway Agency

About this bridge

SR-14 over Coal Creek is a prestressed concrete stringer/multi-beam or girder carrying SR-14 over Coal Creek in Iron County, Utah. It was built in 1988, so it is 37 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 2,870 vehicles a day, roughly 10% of them trucks, projected to reach 3,588 by 2034. The structure is 78 ft (23.7 m) long and 74 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSR-14
CrossesCoal Creek
Location450 East Center St. Cedar
RouteState Highway 14
StateUtah
Coordinates37.6775, -113.05389
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating42.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length78 ft (23.7 m)
Longest span75 ft (22.9 m)
Deck width74 ft (22.5 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic2,870 (2014)
Projected traffic3,588 by 2034
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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-14 over Coal Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is SR-14 over Coal 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 March 2023.

How much traffic does SR-14 over Coal Creek carry?

About 2,870 vehicles per day (2014 count), of which roughly 10% are trucks.

How long is SR-14 over Coal Creek?

The structure is 78 ft (23.7 m) long with a longest span of 75 ft (22.9 m) and a deck 74 ft wide.

Who owns SR-14 over Coal Creek?

It is owned by the State Highway Agency.