US Bridges

Wyo 434 over Otter Creek

FairPosted for load

Washakie County, Wyoming · Tensleep - Big Trails · Structure no. CXL

Built
1956
69 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
60 ft
3 main spans
Daily traffic
96
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 434 over Otter Creek is a concrete continuous slab carrying Wyo 434 over Otter Creek in Washakie County, Wyoming. It was built in 1956, so it is 69 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. Its operating status is: posted for load restriction.

It carries about 96 vehicles a day, roughly 11% of them trucks, projected to reach 134 by 2043. The structure is 60 ft (18.3 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesWyo 434
CrossesOtter Creek
LocationTensleep - Big Trails
RouteState Highway 434
StateWyoming
Coordinates43.88365, -107.37416
Functional classRural Major 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating23.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length60 ft (18.3 m)
Longest span22 ft (6.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2024)
Projected traffic134 by 2043
Trucks11%
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$16,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 434 over Otter Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Wyo 434 over Otter 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 May 2024.

How much traffic does Wyo 434 over Otter Creek carry?

About 96 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Wyo 434 over Otter Creek?

The structure is 60 ft (18.3 m) long with a longest span of 22 ft (6.8 m) and a deck 26 ft wide.

Who owns Wyo 434 over Otter Creek?

It is owned by the State Highway Agency.