Winterhaven Drive over Interstate 8
Imperial County, California · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Winterhaven Drive over Interstate 8 in Imperial County, California, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1973, making it 52 years old at the 2025 inventory.
- It carries about 12,600 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 167 of the 445 inventoried bridges in Imperial County rated fair (37.5%); 35 (7.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 5 to 6.
- Its most recent inspection on record is dated January 2025, on a 48-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 → (32.73181, -114.62457)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete multiple box beam |
| Length | about 208 ft |
| Location | 11-imp-008-r96.55 |
| NBI structure number | 58 0311 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2025 |
| Inspection interval (item 91) | 48 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 Imperial County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Border Crossing (c over New River | 2018 | 29,500 | Good |
| State Route 111 over All American Canal | 1938 | 29,000 | Good |
| Imperial Avenue over Interstate 8 | 2022 | 23,361 | Good |
| Interstate 8 over Araz Wash | 1973 | 20,400 | Good |
| State Route 111 SB over Rockwood Canal | 2003 | 17,580 | Good |
| State Route 111 NB over Rockwood Canal | 2003 | 17,580 | Good |
All bridges nearby: Imperial County, CA bridge conditions · every bridge in Imperial County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.