US Bridges

Wyo 120 over Unnamed Draw

Fair

Hot Springs County, Wyoming · Thermopolis - Cody · Structure no. CAK

Built
1961
64 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
30 ft
3 main spans
Daily traffic
1,821
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 120 over Unnamed Draw is a concrete continuous culvert carrying Wyo 120 over Unnamed Draw in Hot Springs County, Wyoming. It was built in 1961, so it is 64 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 1,821 vehicles a day, roughly 12% of them trucks, projected to reach 2,549 by 2043. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 21.1 mi (34 km).

CarriesWyo 120
CrossesUnnamed Draw
LocationThermopolis - Cody
RouteState Highway 120
StateWyoming
Coordinates43.65699, -108.26327
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 inspectionApril 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 rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,821 (2024)
Projected traffic2,549 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 Wyo 120 over Unnamed Draw built?

It was built in 1961, making it 64 years old in 2025.

What condition is Wyo 120 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 April 2024.

How much traffic does Wyo 120 over Unnamed Draw carry?

About 1,821 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Wyo 120 over Unnamed Draw?

The structure is 30 ft (9.1 m) long with a longest span of 10 ft (3.2 m).

Who owns Wyo 120 over Unnamed Draw?

It is owned by the State Highway Agency.