US Bridges

Wyo 59 over Caballo Creek

Fair

Campbell County, Wyoming · Reno JCT - Gillette · Structure no. CXP

Built
1972
53 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
125 ft
3 main spans
Daily traffic
5,689
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 59 over Caballo Creek is a steel continuous stringer/multi-beam or girder carrying Wyo 59 over Caballo Creek in Campbell County, Wyoming. It was built in 1972, so it is 53 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 5 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 5,689 vehicles a day, roughly 17% of them trucks, projected to reach 7,965 by 2043. The structure is 125 ft (38.1 m) long and 38 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesWyo 59
CrossesCaballo Creek
LocationReno JCT - Gillette
RouteState Highway 59
StateWyoming
Coordinates44.08104, -105.46437
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 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 evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating35.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span48 ft (14.6 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,689 (2024)
Projected traffic7,965 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$84,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 59 over Caballo Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Wyo 59 over Caballo Creek 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 59 over Caballo Creek carry?

About 5,689 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is Wyo 59 over Caballo Creek?

The structure is 125 ft (38.1 m) long with a longest span of 48 ft (14.6 m) and a deck 38 ft wide.

Who owns Wyo 59 over Caballo Creek?

It is owned by the State Highway Agency.