US Bridges

Wyo 789 over Robbers Gulch

Fair

Carbon County, Wyoming · Creston Jct-Baggs · Structure no. GRJ

Built
1957
68 years old
Condition
Fair
inspected June 2024
Type
Culvert
Steel
Length
33 ft
2 main spans
Daily traffic
1,817
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 789 over Robbers Gulch is a steel culvert carrying Wyo 789 over Robbers Gulch in Carbon County, Wyoming. It was built in 1957, so it is 68 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 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 1,817 vehicles a day, roughly 18% of them trucks, projected to reach 2,544 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesWyo 789
CrossesRobbers Gulch
LocationCreston Jct-Baggs
RouteState Highway 789
CountyCarbon County
StateWyoming
Coordinates41.21819, -107.69254
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,817 (2024)
Projected traffic2,544 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 789 over Robbers Gulch built?

It was built in 1957, making it 68 years old in 2025.

What condition is Wyo 789 over Robbers Gulch 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 Wyo 789 over Robbers Gulch carry?

About 1,817 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Wyo 789 over Robbers Gulch?

The structure is 33 ft (10.1 m) long with a longest span of 15 ft (4.6 m).

Who owns Wyo 789 over Robbers Gulch?

It is owned by the State Highway Agency.