US Bridges

I-90 Ebl over Machinery Pass

Fair

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

Built
1969
56 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
2,861
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 Ebl over Machinery Pass is a concrete continuous tee beam carrying I-90 Ebl over Machinery Pass 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 2,861 vehicles a day, roughly 26% of them trucks, projected to reach 4,005 by 2043. The structure is 102 ft (31.1 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-90 Ebl
CrossesMachinery Pass
LocationGillette - Moorcroft
RouteInterstate 90
CountyCrook County
StateWyoming
Coordinates44.2847, -105.05831
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating33.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length102 ft (31.1 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,861 (2024)
Projected traffic4,005 by 2043
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 Ebl over Machinery Pass built?

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

What condition is I-90 Ebl over Machinery Pass 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 Machinery Pass carry?

About 2,861 vehicles per day (2024 count), of which roughly 26% are trucks.

How long is I-90 Ebl over Machinery Pass?

The structure is 102 ft (31.1 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns I-90 Ebl over Machinery Pass?

It is owned by the State Highway Agency.