US Bridges

I-15 (SR-15)NBRAMP over North Wash

Fair

Beaver County, Utah · At No.Beaver Interchange · Structure no. 0E1785

Built
1964
61 years old, rebuilt 1974
Condition
Fair
inspected February 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
24,161
2022 count
Owner
State
State Highway Agency

About this bridge

I-15 (SR-15)NBRAMP over North Wash is a concrete continuous culvert carrying I-15 (SR-15)NBRAMP over North Wash in Beaver County, Utah. It was built in 1964 and reconstructed in 1974, so it is 61 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 24,161 vehicles a day, roughly 43% of them trucks, projected to reach 28,993 by 2042. The structure is 23 ft (6.9 m) long and 268 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

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CarriesI-15 (SR-15)NBRAMP
CrossesNorth Wash
LocationAt No.Beaver Interchange
RouteInterstate 15
CountyBeaver County
StateUtah
Coordinates38.29633, -112.65089
Functional classRural Principal Arterial - Interstate

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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating18.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length23 ft (6.9 m)
Longest span11 ft (3.4 m)
Deck width268 ft (81.7 m)
Roadway width141 ft (43 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic24,161 (2022)
Projected traffic28,993 by 2042
Trucks43%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-15 (SR-15)NBRAMP over North Wash built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1974.

What condition is I-15 (SR-15)NBRAMP over North Wash 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 February 2023.

How much traffic does I-15 (SR-15)NBRAMP over North Wash carry?

About 24,161 vehicles per day (2022 count), of which roughly 43% are trucks.

How long is I-15 (SR-15)NBRAMP over North Wash?

The structure is 23 ft (6.9 m) long with a longest span of 11 ft (3.4 m) and a deck 268 ft wide.

Who owns I-15 (SR-15)NBRAMP over North Wash?

It is owned by the State Highway Agency.