US Bridges

Forest Road 10001 over Greys River

Fair

Lincoln County, Wyoming · 6 Mi. East of Alpine Wy. · Structure no. 040303000001007

Built
1963
62 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Steel
Length
135 ft
2 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Forest Road 10001 over Greys River is a steel box beam or girders - multiple carrying Forest Road 10001 over Greys River in Lincoln County, Wyoming. It was built in 1963, so it is 62 years old, older than the Wyoming average of 48.4 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 135 ft (41.1 m) long and 16 ft wide.

Location

Open in Google Maps
CarriesForest Road 10001
CrossesGreys River
Location6 Mi. East of Alpine Wy.
RouteFederal Lands Road 10001
CountyLincoln County
StateWyoming
Coordinates43.14241, -110.9341
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel
DeckWood or timber
Main spans2
Design loadH 15
Structure length135 ft (41.1 m)
Longest span74 ft (22.7 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost$292,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Road 10001 over Greys River built?

It was built in 1963, making it 62 years old in 2025.

What condition is Forest Road 10001 over Greys 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 September 2023.

How much traffic does Forest Road 10001 over Greys River carry?

About 50 vehicles per day (latest count).

How long is Forest Road 10001 over Greys River?

The structure is 135 ft (41.1 m) long with a longest span of 74 ft (22.7 m) and a deck 16 ft wide.

Who owns Forest Road 10001 over Greys River?

It is owned by the U.S. Forest Service.