US Bridges

I-70 (SR-70) Wbl over SR-161 Intchg. X-Road

Fair

Millard County, Utah · SR-161 Int. at Cove Ft. · Structure no. 4F 193

Built
1973
52 years old, rebuilt 1992
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
111 ft
3 main spans
Daily traffic
7,577
2023 count
Owner
State
State Highway Agency

About this bridge

I-70 (SR-70) Wbl over SR-161 Intchg. X-Road is a prestressed concrete stringer/multi-beam or girder carrying I-70 (SR-70) Wbl over SR-161 Intchg. X-Road in Millard County, Utah. It was built in 1973 and reconstructed in 1992, so it is 52 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 7,577 vehicles a day, roughly 32% of them trucks, projected to reach 9,092 by 2043. The structure is 111 ft (33.9 m) long and 44 ft wide.

Location

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CarriesI-70 (SR-70) Wbl
CrossesSR-161 Intchg. X-Road
LocationSR-161 Int. at Cove Ft.
RouteInterstate 70
CountyMillard County
StateUtah
Coordinates38.58709, -112.58438
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.
Last inspectionFebruary 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length111 ft (33.9 m)
Longest span45 ft (13.7 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,577 (2023)
Projected traffic9,092 by 2043
Trucks32%
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-70 (SR-70) Wbl over SR-161 Intchg. X-Road built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 1992.

What condition is I-70 (SR-70) Wbl over SR-161 Intchg. X-Road 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-70 (SR-70) Wbl over SR-161 Intchg. X-Road carry?

About 7,577 vehicles per day (2023 count), of which roughly 32% are trucks.

How long is I-70 (SR-70) Wbl over SR-161 Intchg. X-Road?

The structure is 111 ft (33.9 m) long with a longest span of 45 ft (13.7 m) and a deck 44 ft wide.

Who owns I-70 (SR-70) Wbl over SR-161 Intchg. X-Road?

It is owned by the State Highway Agency.