US Bridges

I-90 Ebl over Donkey Creek

Fair

Crook County, Wyoming · Gillette - Moorcroft · Structure no. BGP

Built
1969
56 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
178 ft
3 main spans
Daily traffic
2,197
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 Ebl over Donkey Creek is a steel continuous stringer/multi-beam or girder carrying I-90 Ebl over Donkey Creek in Crook County, Wyoming. It was built in 1969, so it is 56 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 2,197 vehicles a day, roughly 32% of them trucks, projected to reach 3,076 by 2043. The structure is 178 ft (54.3 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-90 Ebl
CrossesDonkey Creek
LocationGillette - Moorcroft
RouteInterstate 90
CountyCrook County
StateWyoming
Coordinates44.27969, -104.98933
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.3 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length178 ft (54.3 m)
Longest span68 ft (20.7 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,197 (2024)
Projected traffic3,076 by 2043
Trucks32%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-90 Ebl over Donkey Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is I-90 Ebl 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 June 2023.

How much traffic does I-90 Ebl over Donkey Creek carry?

About 2,197 vehicles per day (2024 count), of which roughly 32% are trucks.

How long is I-90 Ebl over Donkey Creek?

The structure is 178 ft (54.3 m) long with a longest span of 68 ft (20.7 m) and a deck 43 ft wide.

Who owns I-90 Ebl over Donkey Creek?

It is owned by the State Highway Agency.