US Bridges

Wyo 313 over Chugwater Creek

FairPosted for load

Platte County, Wyoming · Chugwater · Structure no. CUF

Built
1954
71 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
93 ft
4 main spans
Daily traffic
307
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 313 over Chugwater Creek is a concrete continuous slab carrying Wyo 313 over Chugwater Creek in Platte County, Wyoming. It was built in 1954, so it is 71 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 307 vehicles a day, roughly 47% of them trucks, projected to reach 430 by 2043. The structure is 93 ft (28.2 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesWyo 313
CrossesChugwater Creek
LocationChugwater
RouteState Highway 313
CountyPlatte County
StateWyoming
Coordinates41.75502, -104.81315
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment8: Equal to present desirable criteria
Operating rating35.3 US tons
Inventory rating21.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length93 ft (28.2 m)
Longest span25 ft (7.6 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic307 (2024)
Projected traffic430 by 2043
Trucks47%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$450,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 313 over Chugwater Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Wyo 313 over Chugwater 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 April 2024.

How much traffic does Wyo 313 over Chugwater Creek carry?

About 307 vehicles per day (2024 count), of which roughly 47% are trucks.

How long is Wyo 313 over Chugwater Creek?

The structure is 93 ft (28.2 m) long with a longest span of 25 ft (7.6 m) and a deck 27 ft wide.

Who owns Wyo 313 over Chugwater Creek?

It is owned by the State Highway Agency.