Road 28n29 over Middle Fork Antelope
Tehama County, California · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Road 28n29 over Middle Fork Antelope in Tehama County, California, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1954, making it 71 years old at the 2025 inventory.
- It carries about 20 vehicles a day.
- It is one of 259 of the 447 inventoried bridges in Tehama County rated fair (57.9%); 21 (4.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2024, on a 24-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 → (40.26724, -121.77454)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 40 ft |
| Location | No Data Entered |
| NBI structure number | 050651000001010 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in Tehama County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate 5 over Biggs Creek | 1940 | 36,500 | Good |
| Interstate 5 over Taylors Wash | 1946 | 36,000 | Fair |
| Interstate 5 over Thomes Creek | 2011 | 29,500 | Fair |
| Interstate 5 over Kopta Creek | 1965 | 29,000 | Fair |
| Interstate 5 over Las Flores Creek | 1965 | 28,000 | Good |
| Interstate 5 over Branch Coyote Creek | 1965 | 28,000 | Good |
All bridges nearby: Tehama County, CA bridge conditions · every bridge in Tehama County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.