N680-n242 Connectr over Walnut Creek
Contra Costa County, California · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N680-n242 Connectr over Walnut Creek in Contra Costa County, California, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1963 and reconstructed in 1998, making it 62 years old at the 2025 inventory.
- It carries about 63,800 vehicles a day (traffic count year 2019).
- Its listed owner is the state highway agency.
- It is one of 56 of the 622 inventoried bridges in Contra Costa County rated poor (9.0%); 56 (9.0%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (37.95868, -122.05186)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 4 | Poor condition |
| Superstructure | 7 | Good condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete multiple box beam |
| Length | about 612 ft |
| Location | 04-cc-680-r18.70-cnd |
| NBI structure number | 28 0040G |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in Contra Costa County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 680 over Canal & Bike Path | 1956 | 257,000 | Fair |
| Interstate 680 over Monument Boulevard | 1998 | 235,000 | Poor |
| Interstate 680 over Parkside Drive | 1960 | 235,000 | Good |
| Interstate 680 over Rudgear Road | 1964 | 197,400 | Good |
| Interstate 680 over Livorna Road | 1964 | 197,400 | Good |
| Interstate 680 over Newell Avenue | 1994 | 195,300 | Fair |
All bridges nearby: Contra Costa County, CA bridge conditions · every bridge in Contra Costa County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.