US Bridges

I-84 (SR-84) Wbl over Curlew Creek and Co.Rd

Fair

Box Elder County, Utah · West of Snowville Intchg. · Structure no. 4F 279

Built
1972
53 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
144 ft
3 main spans
Daily traffic
11,425
2023 count
Owner
State
State Highway Agency

About this bridge

I-84 (SR-84) Wbl over Curlew Creek and Co.Rd is a prestressed concrete stringer/multi-beam or girder carrying I-84 (SR-84) Wbl over Curlew Creek and Co.Rd in Box Elder County, Utah. It was built in 1972, so it is 53 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 11,425 vehicles a day, roughly 52% of them trucks, projected to reach 13,710 by 2043. The structure is 144 ft (44 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-84 (SR-84) Wbl
CrossesCurlew Creek and Co.Rd
LocationWest of Snowville Intchg.
RouteInterstate 84
CountyBox Elder County
StateUtah
Coordinates41.96194, -112.72389
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length144 ft (44 m)
Longest span71 ft (21.6 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,425 (2023)
Projected traffic13,710 by 2043
Trucks52%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 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-84 (SR-84) Wbl over Curlew Creek and Co.Rd built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-84 (SR-84) Wbl over Curlew Creek and Co.Rd 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 I-84 (SR-84) Wbl over Curlew Creek and Co.Rd carry?

About 11,425 vehicles per day (2023 count), of which roughly 52% are trucks.

How long is I-84 (SR-84) Wbl over Curlew Creek and Co.Rd?

The structure is 144 ft (44 m) long with a longest span of 71 ft (21.6 m) and a deck 44 ft wide.

Who owns I-84 (SR-84) Wbl over Curlew Creek and Co.Rd?

It is owned by the State Highway Agency.