US Bridges

Wyo 353 over Unnamed Draw

Fair

Sublette County, Wyoming · Boulder-Big Sandy · Structure no. IMW

Built
1946
79 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
741
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 353 over Unnamed Draw is a concrete continuous culvert carrying Wyo 353 over Unnamed Draw in Sublette County, Wyoming. It was built in 1946, so it is 79 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 741 vehicles a day, roughly 9% of them trucks, projected to reach 1,037 by 2043. The structure is 24 ft (7.3 m) long.

CarriesWyo 353
CrossesUnnamed Draw
LocationBoulder-Big Sandy
RouteState Highway 353
StateWyoming
Coordinates42.7501, -109.67647
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 rating42.8 US tons
Inventory rating25.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic741 (2024)
Projected traffic1,037 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$75,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 353 over Unnamed Draw built?

It was built in 1946, making it 79 years old in 2025.

What condition is Wyo 353 over Unnamed Draw 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 July 2024.

How much traffic does Wyo 353 over Unnamed Draw carry?

About 741 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Wyo 353 over Unnamed Draw?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns Wyo 353 over Unnamed Draw?

It is owned by the State Highway Agency.