US Bridges

County Rd. FA.#504 over Blue Creek

Fair

Box Elder County, Utah · 1 Mile West of Lampo Jct. · Structure no. 003060E

Built
1954
71 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
1,670
2010 count
Owner
County
County Highway Agency

About this bridge

County Rd. FA.#504 over Blue Creek is a concrete continuous culvert carrying County Rd. FA.#504 over Blue Creek in Box Elder County, Utah. It was built in 1954, so it is 71 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 1,670 vehicles a day, roughly 1% of them trucks, projected to reach 2,028 by 2030. The structure is 26 ft (8 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCounty Rd. FA.#504
CrossesBlue Creek
Location1 Mile West of Lampo Jct.
RouteCounty Highway 1076
CountyBox Elder County
StateUtah
Coordinates41.63546, -112.44503
Functional classRural Major Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating60.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length26 ft (8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,670 (2010)
Projected traffic2,028 by 2030
Trucks1%
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 Rd. FA.#504 over Blue Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is County Rd. FA.#504 over Blue 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 Rd. FA.#504 over Blue Creek carry?

About 1,670 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is County Rd. FA.#504 over Blue Creek?

The structure is 26 ft (8 m) long with a longest span of 12 ft (3.7 m).

Who owns County Rd. FA.#504 over Blue Creek?

It is owned by the County Highway Agency.