US Bridges

Wyo 59 over Unnamed Draw

Good

Campbell County, Wyoming · Gillette - Mont Line · Structure no. CHF

Built
1951
74 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
996
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 59 over Unnamed Draw is a concrete continuous culvert carrying Wyo 59 over Unnamed Draw in Campbell County, Wyoming. It was built in 1951, so it is 74 years old, older 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 996 vehicles a day, roughly 28% of them trucks, projected to reach 1,394 by 2043. The structure is 24 ft (7.2 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesWyo 59
CrossesUnnamed Draw
LocationGillette - Mont Line
RouteState Highway 59
StateWyoming
Coordinates44.63908, -105.33765
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 spans2
Design loadH 15
Structure length24 ft (7.2 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 traffic996 (2024)
Projected traffic1,394 by 2043
Trucks28%
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 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 59 over Unnamed Draw built?

It was built in 1951, making it 74 years old in 2025.

What condition is Wyo 59 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 July 2024.

How much traffic does Wyo 59 over Unnamed Draw carry?

About 996 vehicles per day (2024 count), of which roughly 28% are trucks.

How long is Wyo 59 over Unnamed Draw?

The structure is 24 ft (7.2 m) long with a longest span of 10 ft (3 m).

Who owns Wyo 59 over Unnamed Draw?

It is owned by the State Highway Agency.