Wyo 450 over Machinery Pass
FairCampbell County, Wyoming · Newcastle - JCT Wyo 59 · Structure no. DDT
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 90 ft
- 1 main span
- Daily traffic
- 1,479
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Wyo 450 over Machinery Pass is a steel stringer/multi-beam or girder carrying Wyo 450 over Machinery Pass in Campbell County, Wyoming. It was built in 1977, so it is 48 years old, younger 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 1,479 vehicles a day, roughly 28% of them trucks, projected to reach 2,071 by 2043. The structure is 90 ft (27.4 m) long and 34 ft wide. If it were closed, the detour would be 83.9 mi (135 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Wyo 450 over Machinery Pass built?
It was built in 1977, making it 48 years old in 2025.
What condition is Wyo 450 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 July 2024.
How much traffic does Wyo 450 over Machinery Pass carry?
About 1,479 vehicles per day (2024 count), of which roughly 28% are trucks.
How long is Wyo 450 over Machinery Pass?
The structure is 90 ft (27.4 m) long with a longest span of 86 ft (26.2 m) and a deck 34 ft wide.
Who owns Wyo 450 over Machinery Pass?
It is owned by the State Highway Agency.