US Bridges

Forest Road 10099 over New Fk. Lk. Spillway

PoorPosted for load

Sublette County, Wyoming · No Data Entered · Structure no. 040307000001014

Built
1958
67 years old
Condition
Poor
inspected October 2023
Type
Other
Wood or Timber
Length
90 ft
6 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Forest Road 10099 over New Fk. Lk. Spillway is a wood or timber other carrying Forest Road 10099 over New Fk. Lk. Spillway in Sublette County, Wyoming. It was built in 1958, so it is 67 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 90 ft (27.4 m) long and 13 ft wide.

Location

Open in Google Maps
CarriesForest Road 10099
CrossesNew Fk. Lk. Spillway
LocationNo Data Entered
RouteFederal Lands Road 37073
CountySublette County
StateWyoming
Coordinates43.08689, -109.96879
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating16.4 US tons
Inventory rating12.5 US tons

Structure

Structure typeOther
MaterialWood or Timber
DeckWood or timber
Main spans6
Design loadH 15
Structure length90 ft (27.4 m)
Longest span16 ft (4.9 m)
Deck width13 ft (4.1 m)
Roadway width12 ft (3.7 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$164,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Road 10099 over New Fk. Lk. Spillway built?

It was built in 1958, making it 67 years old in 2025.

What condition is Forest Road 10099 over New Fk. Lk. Spillway in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does Forest Road 10099 over New Fk. Lk. Spillway carry?

About 50 vehicles per day (latest count).

How long is Forest Road 10099 over New Fk. Lk. Spillway?

The structure is 90 ft (27.4 m) long with a longest span of 16 ft (4.9 m) and a deck 13 ft wide.

Who owns Forest Road 10099 over New Fk. Lk. Spillway?

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