US Bridges

I-70 (SR-70) Wbl over Bitter Creek

Fair

Grand County, Utah · 3.1 Mi.East Harley Dome · Structure no. 4F 331

Built
1971
54 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
139 ft
2 main spans
Daily traffic
6,785
2014 count
Owner
State
State Highway Agency

About this bridge

I-70 (SR-70) Wbl over Bitter Creek is a prestressed concrete stringer/multi-beam or girder carrying I-70 (SR-70) Wbl over Bitter Creek in Grand County, Utah. It was built in 1971, so it is 54 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 6,785 vehicles a day, roughly 50% of them trucks, projected to reach 8,482 by 2034. The structure is 139 ft (42.3 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-70 (SR-70) Wbl
CrossesBitter Creek
Location3.1 Mi.East Harley Dome
RouteInterstate 70
CountyGrand County
StateUtah
Coordinates39.19212, -109.07653
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length139 ft (42.3 m)
Longest span67 ft (20.4 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,785 (2014)
Projected traffic8,482 by 2034
Trucks50%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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-70 (SR-70) Wbl over Bitter Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is I-70 (SR-70) Wbl over Bitter 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 September 2023.

How much traffic does I-70 (SR-70) Wbl over Bitter Creek carry?

About 6,785 vehicles per day (2014 count), of which roughly 50% are trucks.

How long is I-70 (SR-70) Wbl over Bitter Creek?

The structure is 139 ft (42.3 m) long with a longest span of 67 ft (20.4 m) and a deck 44 ft wide.

Who owns I-70 (SR-70) Wbl over Bitter Creek?

It is owned by the State Highway Agency.