US Bridges

US 20 over Unnamed Draw

Fair

Hot Springs County, Wyoming · Thermopolis - Worland · Structure no. CCI

Built
1954
71 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
27 ft
3 main spans
Daily traffic
1,662
2024 count
Owner
State
State Highway Agency

About this bridge

US 20 over Unnamed Draw is a concrete continuous culvert carrying US 20 over Unnamed Draw in Hot Springs 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.

It carries about 1,662 vehicles a day, roughly 17% of them trucks, projected to reach 2,327 by 2043. The structure is 27 ft (8.1 m) long. If it were closed, the detour would be 39.8 mi (64 km).

CarriesUS 20
CrossesUnnamed Draw
LocationThermopolis - Worland
RouteU.S. Route 20
StateWyoming
Coordinates43.82896, -108.20416
Functional classRural Principal Arterial - Other

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 inspectionMay 2023
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 rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length27 ft (8.1 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,662 (2024)
Projected traffic2,327 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 20 over Unnamed Draw built?

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

What condition is US 20 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 May 2023.

How much traffic does US 20 over Unnamed Draw carry?

About 1,662 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is US 20 over Unnamed Draw?

The structure is 27 ft (8.1 m) long with a longest span of 8 ft (2.4 m).

Who owns US 20 over Unnamed Draw?

It is owned by the State Highway Agency.