US Bridges

Forest Road 10104 over Boulder Creek

Fair

Sublette County, Wyoming · No Data Entered · Structure no. 040307000001029

Built
1968
57 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
73 ft
2 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Forest Road 10104 over Boulder Creek is a wood or timber stringer/multi-beam or girder carrying Forest Road 10104 over Boulder Creek in Sublette 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 fair condition with a lowest component rating of 5 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 73 ft (22.3 m) long and 15 ft wide.

Location

Open in Google Maps
CarriesForest Road 10104
CrossesBoulder Creek
LocationNo Data Entered
RouteFederal Lands Road 37078
CountySublette County
StateWyoming
Coordinates42.85655, -109.61729
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating31.7 US tons
Inventory rating24.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length73 ft (22.3 m)
Longest span36 ft (11 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 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$162,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Road 10104 over Boulder Creek built?

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

What condition is Forest Road 10104 over Boulder Creek 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 Forest Road 10104 over Boulder Creek carry?

About 50 vehicles per day (latest count).

How long is Forest Road 10104 over Boulder Creek?

The structure is 73 ft (22.3 m) long with a longest span of 36 ft (11 m) and a deck 15 ft wide.

Who owns Forest Road 10104 over Boulder Creek?

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