US Bridges

Forest Road 10138 over Little Greys River

Good

Lincoln County, Wyoming · 10 Mi. East of Alpine Wy. · Structure no. 040303000001016

Built
1968
57 years old
Condition
Good
inspected October 2023
Type
Girder and Floorbeam System
Steel
Length
56 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Forest Road 10138 over Little Greys River is a steel girder and floorbeam system carrying Forest Road 10138 over Little Greys River in Lincoln County, Wyoming. It was built in 1968, so it is 57 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 56 ft (17.1 m) long and 29 ft wide.

CarriesForest Road 10138
CrossesLittle Greys River
Location10 Mi. East of Alpine Wy.
RouteFederal Lands Road 10138
StateWyoming
Coordinates43.14625, -110.87288
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating19.6 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-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$215,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Road 10138 over Little Greys River built?

It was built in 1968, making it 57 years old in 2025.

What condition is Forest Road 10138 over Little Greys River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Forest Road 10138 over Little Greys River carry?

About 50 vehicles per day (latest count).

How long is Forest Road 10138 over Little Greys River?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 29 ft wide.

Who owns Forest Road 10138 over Little Greys River?

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