US Bridges

SW Cnty RD 8 over Green River

Fair

Sweetwater County, Wyoming · Fontenelle - Co. Line · Structure no. FPT

Built
1991
34 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
211 ft
3 main spans
Daily traffic
257
2024 count
Owner
County
County Highway Agency

About this bridge

SW Cnty RD 8 over Green River is a steel continuous stringer/multi-beam or girder carrying SW Cnty RD 8 over Green River in Sweetwater County, Wyoming. It was built in 1991, so it is 34 years old, younger 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 257 vehicles a day, roughly 22% of them trucks, projected to reach 360 by 2043. The structure is 211 ft (64.2 m) long and 17 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSW Cnty RD 8
CrossesGreen River
LocationFontenelle - Co. Line
RouteCounty Highway 8
CountySweetwater County
StateWyoming
Coordinates41.98013, -110.04516
Functional classRural Minor Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.3 US tons
Inventory rating58.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length211 ft (64.2 m)
Longest span81 ft (24.7 m)
Deck width17 ft (5.1 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic257 (2024)
Projected traffic360 by 2043
Trucks22%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$32,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SW Cnty RD 8 over Green River built?

It was built in 1991, making it 34 years old in 2025.

What condition is SW Cnty RD 8 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 June 2023.

How much traffic does SW Cnty RD 8 over Green River carry?

About 257 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is SW Cnty RD 8 over Green River?

The structure is 211 ft (64.2 m) long with a longest span of 81 ft (24.7 m) and a deck 17 ft wide.

Who owns SW Cnty RD 8 over Green River?

It is owned by the County Highway Agency.