US Bridges

I-70 (SR-70) Wbl over Co.Rd. Cunningham Ranch

Fair

Grand County, Utah · 1.2 Mi.E.Of W.Cisco Int. · Structure no. 4F 271

Built
1971
54 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
111 ft
1 main span
Daily traffic
9,164
2023 count
Owner
State
State Highway Agency

About this bridge

I-70 (SR-70) Wbl over Co.Rd. Cunningham Ranch is a prestressed concrete stringer/multi-beam or girder carrying I-70 (SR-70) Wbl over Co.Rd. Cunningham Ranch 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 9,164 vehicles a day, roughly 49% of them trucks, projected to reach 10,997 by 2043. The structure is 111 ft (33.7 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
CrossesCo.Rd. Cunningham Ranch
Location1.2 Mi.E.Of W.Cisco Int.
RouteInterstate 70
CountyGrand County
StateUtah
Coordinates38.95526, -109.38743
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length111 ft (33.7 m)
Longest span105 ft (32 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,164 (2023)
Projected traffic10,997 by 2043
Trucks49%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 Co.Rd. Cunningham Ranch built?

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

What condition is I-70 (SR-70) Wbl over Co.Rd. Cunningham Ranch 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 Co.Rd. Cunningham Ranch carry?

About 9,164 vehicles per day (2023 count), of which roughly 49% are trucks.

How long is I-70 (SR-70) Wbl over Co.Rd. Cunningham Ranch?

The structure is 111 ft (33.7 m) long with a longest span of 105 ft (32 m) and a deck 44 ft wide.

Who owns I-70 (SR-70) Wbl over Co.Rd. Cunningham Ranch?

It is owned by the State Highway Agency.