Dersch Rd over Lack Creek
Shasta County, California · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Dersch Rd over Lack Creek in Shasta County, California, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1963, making it 62 years old at the 2025 inventory.
- It carries about 1,120 vehicles a day (traffic count year 2013).
- Its listed owner is the county highway agency.
- It is one of 249 of the 493 inventoried bridges in Shasta County rated good (50.5%); 11 (2.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated fair in the 2024 inventory and is now good (deck 5 to 7, superstructure 7 to 8, substructure 6 to 7).
- Its most recent inspection on record is dated September 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 → (40.48805, -122.13547)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 7 | Good condition |
| Superstructure | 7 | 8 | Very good condition |
| Substructure | 6 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete tee beam |
| Length | about 110 ft |
| Location | 2.8 Mi W Ash CR Rd |
| NBI structure number | 06C0076 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in Shasta County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 5 NB over Balls Ferry Rd | 1966 | 78,000 | Good |
| Interstate Route 5 over UPRR Railroad Tracks | 2022 | 55,000 | Fair |
| Interstate Route 5 over Anderson Creek | 2022 | 55,000 | Good |
| Interstate 5 over Boulder Creek | 1965 | 53,000 | Fair |
| Interstate 5 over Sacramento River | 2003 | 51,000 | Good |
| State Route 44 over Sacramento River | 2010 | 51,000 | Good |
All bridges nearby: Shasta County, CA bridge conditions · every bridge in Shasta County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.