Interstate 5 over Anderson Creek Overflow
Shasta County, California · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Interstate 5 over Anderson Creek Overflow in Shasta County, California, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1966, making it 59 years old at the 2025 inventory.
- It carries about 39,000 vehicles a day (traffic count year 2024).
- Its listed owner is the state 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).
- Its class is unchanged from 2024 (good), but component ratings moved: culvert 7 to 8.
- Its most recent inspection on record is dated August 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 → (40.44657, -122.2889)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 8 | Very good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 26 ft |
| Location | 02-sha-005-r4.92-and |
| NBI structure number | 06 0168 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 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 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.