State Route 37 over Mini Drive
Solano County, California · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- State Route 37 over Mini Drive in Solano County, California, 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 2005, making it 20 years old at the 2025 inventory.
- It carries about 29,000 vehicles a day (traffic count year 2009).
- Its listed owner is the state highway agency.
- It is one of 156 of the 374 inventoried bridges in Solano County rated fair (41.7%); 24 (6.4%) 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 December 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 → (38.14241, -122.2499)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 160 ft |
| Location | 04-sol-037-r9.98-val |
| NBI structure number | 23 0220 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 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 California department of transportation.
Busiest bridges in Solano County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 80 over Dan Wilson Creek | 1951 | 202,000 | Fair |
| Interstate 80 over Suisun Creek | 1932 | 202,000 | Poor |
| Interstate 80 over Green Valley Creek | 1928 | 189,000 | Poor |
| Interstate 80 over Pedestrian Walkway | 1961 | 177,000 | Good |
| Interstate 80 over Alamo Creek | 1936 | 147,000 | Poor |
| Interstate 80 over Interstate 780 | 1958 | 145,000 | Good |
All bridges nearby: Solano County, CA bridge conditions · every bridge in Solano County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.