Co. Jail Access Rd over Marsh Creek
Contra Costa County, California · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Co. Jail Access Rd over Marsh Creek in Contra Costa County, California, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 2014, making it 11 years old at the 2025 inventory.
- It carries about 150 vehicles a day (traffic count year 2014).
- Its listed owner is the county highway agency.
- It is one of 260 of the 622 inventoried bridges in Contra Costa County rated good (41.8%); 56 (9.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: deck 7 to 8, superstructure 7 to 8.
- Its most recent inspection on record is dated July 2024, 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 → (37.89302, -121.86098)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 8 | Very good condition |
| Superstructure | 7 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 60 ft |
| Location | 0.25 Mi. S. Marsh CR. Rd |
| NBI structure number | 28C0274 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
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.