US Bridges

I-80 Wbl over Machinery Pass

Fair

Carbon County, Wyoming · Rawlins - Laramie · Structure no. AUP

Built
1967
58 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
76 ft
3 main spans
Daily traffic
6,878
2024 count
Owner
State
State Highway Agency

About this bridge

I-80 Wbl over Machinery Pass is a concrete continuous tee beam carrying I-80 Wbl over Machinery Pass in Carbon County, Wyoming. It was built in 1967, so it is 58 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 6,878 vehicles a day, roughly 55% of them trucks, projected to reach 9,629 by 2043. The structure is 76 ft (23.2 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-80 Wbl
CrossesMachinery Pass
LocationRawlins - Laramie
RouteInterstate 80
StateWyoming
Coordinates41.74206, -106.84336
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.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length76 ft (23.2 m)
Longest span31 ft (9.4 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,878 (2024)
Projected traffic9,629 by 2043
Trucks55%
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 Wbl over Machinery Pass built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-80 Wbl 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 2024.

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

About 6,878 vehicles per day (2024 count), of which roughly 55% are trucks.

How long is I-80 Wbl over Machinery Pass?

The structure is 76 ft (23.2 m) long with a longest span of 31 ft (9.4 m) and a deck 41 ft wide.

Who owns I-80 Wbl over Machinery Pass?

It is owned by the State Highway Agency.