Grand Loop Road over Ravine
Park County, Wyoming · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Grand Loop Road over Ravine in Park County, Wyoming, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1977, making it 48 years old at the 2025 inventory.
- It carries about 1,807 vehicles a day (traffic count year 2019).
- It is one of 115 of the 187 inventoried bridges in Park County rated fair (61.5%); 7 (3.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated poor in the 2024 inventory and is now fair (deck 3 to 6).
- Its most recent inspection on record is dated September 2024, 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 → (44.93558, -110.72222)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 3 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 327 ft |
| Location | 4.5 Mi. South of Mammoth |
| NBI structure number | 1570001P0000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| 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 Park County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 14 over Sulphur Creek | 1955 | 18,836 | Fair |
| US 14 over Beck Lake | 1970 | 7,543 | Fair |
| US 14A over Shoshone River | 1957 | 7,206 | Fair |
| US 14A over Sage Creek | 2014 | 7,206 | Good |
| US 14A over Alkali Creek | 2005 | 5,874 | Fair |
| US 14A over Garland Canal | 2005 | 5,874 | Fair |
All bridges nearby: Park County, WY bridge conditions · every bridge in Park County · Wyoming bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.