US Bridges

Cb Cnty RD 291 over Sage Creek

Fair

Carbon County, Wyoming · 30 Mi. W.Of Shirley Basin · Structure no. DMZ

Built
1973
52 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
123
2024 count
Owner
County
County Highway Agency

About this bridge

Cb Cnty RD 291 over Sage Creek is a steel stringer/multi-beam or girder carrying Cb Cnty RD 291 over Sage Creek in Carbon 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 123 vehicles a day, roughly 46% of them trucks, projected to reach 172 by 2043. The structure is 38 ft (11.5 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCb Cnty RD 291
CrossesSage Creek
Location30 Mi. W.Of Shirley Basin
RouteCounty Highway 291
CountyCarbon County
StateWyoming
Coordinates42.25085, -106.80195
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
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length38 ft (11.5 m)
Longest span35 ft (10.7 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic123 (2024)
Projected traffic172 by 2043
Trucks46%
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$39,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cb Cnty RD 291 over Sage Creek built?

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

What condition is Cb Cnty RD 291 over Sage 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 June 2024.

How much traffic does Cb Cnty RD 291 over Sage Creek carry?

About 123 vehicles per day (2024 count), of which roughly 46% are trucks.

How long is Cb Cnty RD 291 over Sage Creek?

The structure is 38 ft (11.5 m) long with a longest span of 35 ft (10.7 m) and a deck 25 ft wide.

Who owns Cb Cnty RD 291 over Sage Creek?

It is owned by the County Highway Agency.