US Bridges

Wyo 120 over Unnamed Draw

Good

Hot Springs County, Wyoming · Thermopolis-Meeteetse · Structure no. JRB

Built
1993
32 years old
Condition
Good
inspected May 2023
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
1,434
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 120 over Unnamed Draw is a steel culvert carrying Wyo 120 over Unnamed Draw in Hot Springs County, Wyoming. It was built in 1993, so it is 32 years old, younger than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,434 vehicles a day, roughly 15% of them trucks, projected to reach 2,008 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 80.2 mi (129 km).

CarriesWyo 120
CrossesUnnamed Draw
LocationThermopolis-Meeteetse
RouteState Highway 120
StateWyoming
Coordinates44.05162, -108.71337
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 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 traffic1,434 (2024)
Projected traffic2,008 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed80.2 mi (129 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 120 over Unnamed Draw built?

It was built in 1993, making it 32 years old in 2025.

What condition is Wyo 120 over Unnamed Draw in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Wyo 120 over Unnamed Draw carry?

About 1,434 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Wyo 120 over Unnamed Draw?

The structure is 21 ft (6.4 m) long with a longest span of 8 ft (2.4 m).

Who owns Wyo 120 over Unnamed Draw?

It is owned by the State Highway Agency.