Bh Cnty RD L55 over Big Horn River
PoorPosted for loadBig Horn County, Wyoming · 6 Miles S. of Manderson · Structure no. EJQ
- Built
- 1930
- 95 years old, rebuilt 1979
- Condition
- Poor
- inspected May 2024
- Type
- Truss - Thru
- Steel
- Length
- 267 ft
- 2 main spans
- Daily traffic
- 88
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Bh Cnty RD L55 over Big Horn River is a steel truss - thru carrying Bh Cnty RD L55 over Big Horn River in Big Horn County, Wyoming. It was built in 1930 and reconstructed in 1979, so it is 95 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. Its operating status is: posted for load restriction.
It carries about 88 vehicles a day, roughly 32% of them trucks, projected to reach 123 by 2043. The structure is 267 ft (81.4 m) long and 26 ft wide. If it were closed, the detour would be 16.2 mi (26 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 | 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 Bh Cnty RD L55 over Big Horn River built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1979.
What condition is Bh Cnty RD L55 over Big Horn River 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 May 2024.
How much traffic does Bh Cnty RD L55 over Big Horn River carry?
About 88 vehicles per day (2024 count), of which roughly 32% are trucks.
How long is Bh Cnty RD L55 over Big Horn River?
The structure is 267 ft (81.4 m) long with a longest span of 114 ft (34.7 m) and a deck 26 ft wide.
Who owns Bh Cnty RD L55 over Big Horn River?
It is owned by the County Highway Agency.