US Bridges

County Road over Diamond Fork Creek

Fair

Utah County, Utah · 2.5 Miles Nw. of Thistle · Structure no. 049066C

Built
1955
70 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
77 ft
1 main span
Daily traffic
19
2010 count
Owner
County
County Highway Agency

About this bridge

County Road over Diamond Fork Creek is a steel stringer/multi-beam or girder carrying County Road over Diamond Fork Creek in Utah County, Utah. It was built in 1955, so it is 70 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 5 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 19 vehicles a day, projected to reach 24 by 2030. The structure is 77 ft (23.6 m) long and 46 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesDiamond Fork Creek
Location2.5 Miles Nw. of Thistle
RouteCounty Highway 0
CountyUtah County
StateUtah
Coordinates40.02681, -111.50447
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 23 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.2 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length77 ft (23.6 m)
Longest span60 ft (18.3 m)
Deck width46 ft (14.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic19 (2010)
Projected traffic24 by 2030
Trucks0%
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

OwnerCounty Highway Agency
Maintained byCounty 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 County Road over Diamond Fork Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is County Road over Diamond Fork 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 November 2023.

How much traffic does County Road over Diamond Fork Creek carry?

About 19 vehicles per day (2010 count).

How long is County Road over Diamond Fork Creek?

The structure is 77 ft (23.6 m) long with a longest span of 60 ft (18.3 m) and a deck 46 ft wide.

Who owns County Road over Diamond Fork Creek?

It is owned by the County Highway Agency.