US Bridges

Blue Mountain Road over Green River

Fair

Uintah County, Utah · Approximately 13 Miles FR · Structure no. 1400001P0000000

Built
1966
59 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
404 ft
4 main spans
Daily traffic
300
2009 count
Owner
Federal
National Park Service

About this bridge

Blue Mountain Road over Green River is a steel continuous stringer/multi-beam or girder carrying Blue Mountain Road over Green River in Uintah County, Utah. It was built in 1966, so it is 59 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 300 vehicles a day, roughly 3% of them trucks, projected to reach 500 by 2029. The structure is 404 ft (123.1 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesBlue Mountain Road
CrossesGreen River
LocationApproximately 13 Miles FR
RouteFederal Lands Road 100
StateUtah
Coordinates40.40879, -109.23446
Functional classRural Local

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 inspectionApril 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length404 ft (123.1 m)
Longest span111 ft (33.8 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2009)
Projected traffic500 by 2029
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$113,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Blue Mountain Road over Green River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Blue Mountain Road over Green River 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 April 2023.

How much traffic does Blue Mountain Road over Green River carry?

About 300 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is Blue Mountain Road over Green River?

The structure is 404 ft (123.1 m) long with a longest span of 111 ft (33.8 m) and a deck 32 ft wide.

Who owns Blue Mountain Road over Green River?

It is owned by the National Park Service.