US Bridges

I-84 (SR-84) Wbl over SR-83

Fair

Box Elder County, Utah · Howell JCT Interchange · Structure no. 4D 619

Built
1959
66 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete Continuous
Length
157 ft
3 main spans
Daily traffic
12,109
2023 count
Owner
State
State Highway Agency

About this bridge

I-84 (SR-84) Wbl over SR-83 is a concrete continuous tee beam carrying I-84 (SR-84) Wbl over SR-83 in Box Elder County, Utah. It was built in 1959, so it is 66 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 12,109 vehicles a day, roughly 51% of them trucks, projected to reach 14,531 by 2043. The structure is 157 ft (47.9 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesI-84 (SR-84) Wbl
CrossesSR-83
LocationHowell JCT Interchange
RouteInterstate 84
CountyBox Elder County
StateUtah
Coordinates41.81694, -112.41194
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating26.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length157 ft (47.9 m)
Longest span60 ft (18.3 m)
Deck width44 ft (13.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,109 (2023)
Projected traffic14,531 by 2043
Trucks51%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 SR-83 built?

It was built in 1959, making it 66 years old in 2025.

What condition is I-84 (SR-84) Wbl over SR-83 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 SR-83 carry?

About 12,109 vehicles per day (2023 count), of which roughly 51% are trucks.

How long is I-84 (SR-84) Wbl over SR-83?

The structure is 157 ft (47.9 m) long with a longest span of 60 ft (18.3 m) and a deck 44 ft wide.

Who owns I-84 (SR-84) Wbl over SR-83?

It is owned by the State Highway Agency.