I-25 Sbl over Machinery Pass
Converse County, Wyoming · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-25 Sbl over Machinery Pass in Converse County, Wyoming, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 3,379 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 21 of the 136 inventoried bridges in Converse County rated good (15.4%); 19 (14.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated fair in the 2024 inventory and is now good (deck 6 to 7, superstructure 6 to 7).
- Its most recent inspection on record is dated January 2025, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (42.63665, -105.16557)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 7 | Good condition |
| Superstructure | 6 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete tee beam |
| Length | about 89 ft |
| Location | Glendo - Douglas |
| NBI structure number | CZR |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2025 |
| 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 Wyo 90 | 1967 | 4,838 | Fair |
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.