Bh Cnty Rd L55 over Big Horn River
Big Horn County, Wyoming · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Bh Cnty Rd L55 over Big Horn River in Big Horn County, Wyoming, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1930 and reconstructed in 1979, making it 95 years old at the 2025 inventory.
- It carries about 88 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 9 of the 91 inventoried bridges in Big Horn County rated poor (9.9%); 9 (9.9%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (44.19393, -107.9157)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 4 | Poor condition |
| Superstructure | 4 | Poor condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Steel through truss |
| Length | about 267 ft |
| Location | 6 Miles S. Of Manderson |
| NBI structure number | EJQ |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wyoming department of transportation.
Busiest bridges in Big Horn County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 14 over Dry Creek | 1961 | 5,103 | Good |
| US 14 over BNSF Railway | 1961 | 5,103 | Fair |
| US 310 over Shoshone River | 1965 | 4,224 | Fair |
| US 16 over Greybull River | 1955 | 3,036 | Fair |
| US 16 over BNSF Railway | 2005 | 3,036 | Fair |
| US 310 over Little Dry Creek | 1957 | 2,271 | Fair |
All bridges nearby: Big Horn County, WY bridge conditions · every bridge in Big Horn County · Wyoming bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.