US Bridges

Culbertson Avenue over Big Horn River

PoorPosted for load

Washakie County, Wyoming · Worland · Structure no. EOJ

Built
1934
91 years old
Condition
Poor
inspected May 2024
Type
Truss - Thru
Steel
Length
426 ft
2 main spans
Daily traffic
1,045
2024 count
Owner
State
State Highway Agency

About this bridge

Culbertson Avenue over Big Horn River is a steel truss - thru carrying Culbertson Avenue over Big Horn River in Washakie County, Wyoming. It was built in 1934, so it is 91 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 1,045 vehicles a day, roughly 11% of them trucks, projected to reach 1,463 by 2043. The structure is 426 ft (129.8 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCulbertson Avenue
CrossesBig Horn River
LocationWorland
RouteCity Street 4768
CountyWashakie County
StateWyoming
Coordinates44.01474, -107.97092
Functional classRural Major Collector

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.6 US tons
Inventory rating26.6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length426 ft (129.8 m)
Longest span210 ft (64 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deck13 ft (3.9 m)

Traffic and service

Average daily traffic1,045 (2024)
Projected traffic1,463 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Culbertson Avenue over Big Horn River built?

It was built in 1934, making it 91 years old in 2025.

What condition is Culbertson Avenue over Big Horn River 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 May 2024.

How much traffic does Culbertson Avenue over Big Horn River carry?

About 1,045 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Culbertson Avenue over Big Horn River?

The structure is 426 ft (129.8 m) long with a longest span of 210 ft (64 m) and a deck 25 ft wide.

Who owns Culbertson Avenue over Big Horn River?

It is owned by the State Highway Agency.