Old Barnum Road over I-25
FairJohnson County, Wyoming · Casper - Kaycee · Structure no. AKG
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 318 ft
- 2 main spans
- Daily traffic
- 89
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Old Barnum Road over I-25 is a steel continuous stringer/multi-beam or girder carrying Old Barnum Road over I-25 in Johnson County, Wyoming. It was built in 1971, so it is 54 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 89 vehicles a day, roughly 17% of them trucks, projected to reach 125 by 2043. The structure is 318 ft (96.9 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Old Barnum Road over I-25 built?
It was built in 1971, making it 54 years old in 2025.
What condition is Old Barnum Road over I-25 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 April 2024.
How much traffic does Old Barnum Road over I-25 carry?
About 89 vehicles per day (2024 count), of which roughly 17% are trucks.
How long is Old Barnum Road over I-25?
The structure is 318 ft (96.9 m) long with a longest span of 157 ft (47.9 m) and a deck 35 ft wide.
Who owns Old Barnum Road over I-25?
It is owned by the State Highway Agency.