US Bridges

I-70 (SR-70 Wbl) over Missile Base Service RD

Fair

Grand County, Utah · 4 Mi.East of Green River · Structure no. 4F 349

Built
1981
44 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
9,579
2023 count
Owner
State
State Highway Agency

About this bridge

I-70 (SR-70 Wbl) over Missile Base Service RD is a prestressed concrete stringer/multi-beam or girder carrying I-70 (SR-70 Wbl) over Missile Base Service RD in Grand County, Utah. It was built in 1981, so it is 44 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 9,579 vehicles a day, roughly 39% of them trucks, projected to reach 11,495 by 2043. The structure is 82 ft (25.1 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)
CrossesMissile Base Service RD
Location4 Mi.East of Green River
RouteInterstate 70
CountyGrand County
StateUtah
Coordinates38.97467, -110.13691
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 inspectionOctober 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 rating66.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length82 ft (25.1 m)
Longest span80 ft (24.4 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic9,579 (2023)
Projected traffic11,495 by 2043
Trucks39%
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 Missile Base Service RD built?

It was built in 1981, making it 44 years old in 2025.

What condition is I-70 (SR-70 Wbl) over Missile Base Service RD 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 October 2023.

How much traffic does I-70 (SR-70 Wbl) over Missile Base Service RD carry?

About 9,579 vehicles per day (2023 count), of which roughly 39% are trucks.

How long is I-70 (SR-70 Wbl) over Missile Base Service RD?

The structure is 82 ft (25.1 m) long with a longest span of 80 ft (24.4 m) and a deck 44 ft wide.

Who owns I-70 (SR-70 Wbl) over Missile Base Service RD?

It is owned by the State Highway Agency.