US Bridges

I-90 Ebl over Machinery Pass

Fair

Crook County, Wyoming · Moorcroft - Sundance · Structure no. BHL

Built
1962
63 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
54 ft
3 main spans
Daily traffic
1,559
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 Ebl over Machinery Pass is a concrete continuous slab carrying I-90 Ebl over Machinery Pass in Crook County, Wyoming. It was built in 1962, so it is 63 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 1,559 vehicles a day, roughly 41% of them trucks, projected to reach 2,183 by 2043. The structure is 54 ft (16.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-90 Ebl
CrossesMachinery Pass
LocationMoorcroft - Sundance
RouteInterstate 90
StateWyoming
Coordinates44.27572, -104.79927
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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.7 US tons
Inventory rating32.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length54 ft (16.6 m)
Longest span20 ft (6.1 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,559 (2024)
Projected traffic2,183 by 2043
Trucks41%
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 1962, making it 63 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 1,559 vehicles per day (2024 count), of which roughly 41% are trucks.

How long is I-90 Ebl over Machinery Pass?

The structure is 54 ft (16.6 m) long with a longest span of 20 ft (6.1 m) and a deck 41 ft wide.

Who owns I-90 Ebl over Machinery Pass?

It is owned by the State Highway Agency.