I-25 Sbl over Wyo 90
Converse County, Wyoming · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-25 Sbl over Wyo 90 in Converse County, Wyoming, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1967, making it 58 years old at the 2025 inventory.
- It carries about 4,838 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 96 of the 136 inventoried bridges in Converse County rated fair (70.6%); 19 (14.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (42.82674, -105.82005)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 116 ft |
| Location | Douglas - Casper |
| NBI structure number | AHA |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wyoming department of transportation.
Busiest bridges in Converse County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I25/US20-26-87 Bus over North Platte River | 2009 | 8,403 | Good |
| I25/US20-26-87 Bus over I-25 | 1966 | 7,719 | Fair |
| Wyo 59 over North Platte River | 1988 | 6,320 | Good |
| Wyo 59 over BNSF Railway | 1988 | 6,320 | Fair |
| W Richards Street over North Platte River | 1984 | 5,816 | Poor |
| I-25 Sbl over CR 18 (Mormon Canyon Rd) | 1967 | 4,838 | Good |
All bridges nearby: Converse County, WY bridge conditions · every bridge in Converse County · Wyoming bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.