I-25 Nbl over Machinery Pass
PoorPlatte County, Wyoming · Glendo - Douglas · Structure no. CZM
- Built
- 1972
- 53 years old
- Condition
- Poor
- inspected March 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 75 ft
- 3 main spans
- Daily traffic
- 3,563
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Nbl over Machinery Pass is a concrete continuous tee beam carrying I-25 Nbl over Machinery Pass in Platte County, Wyoming. It was built in 1972, so it is 53 years old, older than the Wyoming average of 48.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 3,563 vehicles a day, roughly 24% of them trucks, projected to reach 4,988 by 2043. The structure is 75 ft (22.9 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-25 Nbl over Machinery Pass built?
It was built in 1972, making it 53 years old in 2025.
What condition is I-25 Nbl over Machinery Pass in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.
How much traffic does I-25 Nbl over Machinery Pass carry?
About 3,563 vehicles per day (2024 count), of which roughly 24% are trucks.
How long is I-25 Nbl over Machinery Pass?
The structure is 75 ft (22.9 m) long with a longest span of 31 ft (9.4 m) and a deck 45 ft wide.
Who owns I-25 Nbl over Machinery Pass?
It is owned by the State Highway Agency.