US Bridges

I-70 (SR-70) Wbl over Nash Wash

Fair

Grand County, Utah · 0.2 Mi.E.Of W.Cisco Int. · Structure no. 4F 268

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

About this bridge

I-70 (SR-70) Wbl over Nash Wash is a prestressed concrete stringer/multi-beam or girder carrying I-70 (SR-70) Wbl over Nash Wash 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 127 ft (38.6 m) long and 52 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
CrossesNash Wash
Location0.2 Mi.E.Of W.Cisco Int.
RouteInterstate 70
CountyGrand County
StateUtah
Coordinates38.94155, -109.40292
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
Deck7 GoodSome minor problems.
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
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length127 ft (38.6 m)
Longest span61 ft (18.7 m)
Deck width52 ft (15.8 m)
Roadway width52 ft (15.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,164 (2023)
Projected traffic10,997 by 2043
Trucks49%
Lanes on structure3
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 Nash Wash built?

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

What condition is I-70 (SR-70) Wbl over Nash Wash 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 Nash Wash carry?

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

How long is I-70 (SR-70) Wbl over Nash Wash?

The structure is 127 ft (38.6 m) long with a longest span of 61 ft (18.7 m) and a deck 52 ft wide.

Who owns I-70 (SR-70) Wbl over Nash Wash?

It is owned by the State Highway Agency.