US Bridges

Wyo 59 over Donkey Creek

Fair

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

Built
1975
50 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
130 ft
3 main spans
Daily traffic
22,352
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 59 over Donkey Creek is a steel continuous stringer/multi-beam or girder carrying Wyo 59 over Donkey Creek in Campbell County, Wyoming. It was built in 1975, so it is 50 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 22,352 vehicles a day, roughly 2% of them trucks, projected to reach 31,293 by 2043. The structure is 130 ft (39.6 m) long and 96 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesWyo 59
CrossesDonkey Creek
LocationReno JCT - Gillette
RouteState Highway 59
CountyCampbell County
StateWyoming
Coordinates44.26652, -105.49373
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span50 ft (15.2 m)
Deck width96 ft (29.3 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,352 (2024)
Projected traffic31,293 by 2043
Trucks2%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$7,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wyo 59 over Donkey Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Wyo 59 over Donkey 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 Donkey Creek carry?

About 22,352 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Wyo 59 over Donkey Creek?

The structure is 130 ft (39.6 m) long with a longest span of 50 ft (15.2 m) and a deck 96 ft wide.

Who owns Wyo 59 over Donkey Creek?

It is owned by the State Highway Agency.