US Bridges

SB Cnty RD 139 over Green River

Fair

Sublette County, Wyoming · T29N R111W S33 · Structure no. ENH

Built
1973
52 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
249 ft
3 main spans
Daily traffic
60
2024 count
Owner
County
County Highway Agency

About this bridge

SB Cnty RD 139 over Green River is a steel continuous stringer/multi-beam or girder carrying SB Cnty RD 139 over Green River in Sublette County, Wyoming. It was built in 1973, so it is 52 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 60 vehicles a day, roughly 25% of them trucks, projected to reach 84 by 2043. The structure is 249 ft (75.8 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSB Cnty RD 139
CrossesGreen River
LocationT29N R111W S33
RouteCounty Highway 139
CountySublette County
StateWyoming
Coordinates42.45866, -110.07954
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating58 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length249 ft (75.8 m)
Longest span81 ft (24.7 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2024)
Projected traffic84 by 2043
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$33,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SB Cnty RD 139 over Green River built?

It was built in 1973, making it 52 years old in 2025.

What condition is SB Cnty RD 139 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 July 2024.

How much traffic does SB Cnty RD 139 over Green River carry?

About 60 vehicles per day (2024 count), of which roughly 25% are trucks.

How long is SB Cnty RD 139 over Green River?

The structure is 249 ft (75.8 m) long with a longest span of 81 ft (24.7 m) and a deck 25 ft wide.

Who owns SB Cnty RD 139 over Green River?

It is owned by the County Highway Agency.