US Bridges

I-80 Ebl over Machinery Pass

FairPosted for load

Laramie County, Wyoming · Laramie - Cheyenne · Structure no. AYP

Built
1961
64 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
70 ft
3 main spans
Daily traffic
7,233
2024 count
Owner
State
State Highway Agency

About this bridge

I-80 Ebl over Machinery Pass is a concrete continuous slab carrying I-80 Ebl over Machinery Pass in Laramie County, Wyoming. It was built in 1961, so it is 64 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. Its operating status is: posted for load restriction.

It carries about 7,233 vehicles a day, roughly 48% of them trucks, projected to reach 10,126 by 2043. The structure is 70 ft (21.4 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-80 Ebl
CrossesMachinery Pass
LocationLaramie - Cheyenne
RouteInterstate 80
StateWyoming
Coordinates41.11283, -104.93336
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating29.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length70 ft (21.4 m)
Longest span26 ft (8 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,233 (2024)
Projected traffic10,126 by 2043
Trucks48%
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-80 Ebl over Machinery Pass built?

It was built in 1961, making it 64 years old in 2025.

What condition is I-80 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 March 2024.

How much traffic does I-80 Ebl over Machinery Pass carry?

About 7,233 vehicles per day (2024 count), of which roughly 48% are trucks.

How long is I-80 Ebl over Machinery Pass?

The structure is 70 ft (21.4 m) long with a longest span of 26 ft (8 m) and a deck 41 ft wide.

Who owns I-80 Ebl over Machinery Pass?

It is owned by the State Highway Agency.