I-25 Nbl over Boxelder Creek
PoorConverse County, Wyoming · Douglas - Casper · Structure no. AGT
- Built
- 1958
- 67 years old
- Condition
- Poor
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 155 ft
- 4 main spans
- Daily traffic
- 4,762
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-25 Nbl over Boxelder Creek is a steel continuous stringer/multi-beam or girder carrying I-25 Nbl over Boxelder Creek in Converse County, Wyoming. It was built in 1958, so it is 67 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 4,762 vehicles a day, roughly 19% of them trucks, projected to reach 6,667 by 2043. The structure is 155 ft (47.2 m) long and 43 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-25 Nbl over Boxelder Creek built?
It was built in 1958, making it 67 years old in 2025.
What condition is I-25 Nbl over Boxelder Creek 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 April 2023.
How much traffic does I-25 Nbl over Boxelder Creek carry?
About 4,762 vehicles per day (2024 count), of which roughly 19% are trucks.
How long is I-25 Nbl over Boxelder Creek?
The structure is 155 ft (47.2 m) long with a longest span of 42 ft (12.8 m) and a deck 43 ft wide.
Who owns I-25 Nbl over Boxelder Creek?
It is owned by the State Highway Agency.