Kilburn Road over Orestimba Creek
Stanislaus County, California · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Kilburn Road over Orestimba Creek in Stanislaus County, California, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1910 and reconstructed in 1918, making it 115 years old at the 2025 inventory.
- It carries about 122 vehicles a day (traffic count year 2017).
- Its listed owner is the county highway agency.
- It is one of 214 of the 386 inventoried bridges in Stanislaus County rated fair (55.4%); 52 (13.5%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- It was rated poor in the 2024 inventory and is now fair (deck 4 to 5, superstructure 4 to 5, substructure 4 to 5).
- Its most recent inspection on record is dated October 2024, on a 12-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 → (37.3992, -121.03239)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 5 | Fair condition |
| Superstructure | 4 | 5 | Fair condition |
| Substructure | 4 | 5 | Fair condition |
Bridge details
| Structure | Through truss |
| Length | about 62 ft |
| Location | .45 Mi S Crows Landing Rd |
| NBI structure number | 38C0168 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 12 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 Stanislaus County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| State Route 99 over 9TH Street & UP RR | 1963 | 121,000 | Fair |
| State Route 99 over Second St-sb 99 on Ramp | 1965 | 101,000 | Good |
| State Route 99 over SB 99-north St Off Ramp | 1965 | 101,000 | Good |
| State Route 99 over Ceres Main Canal | 1941 | 96,000 | Fair |
| State Route 99 over Mitchell Rd | 1965 | 96,000 | Fair |
| Briggsmore Road over UP RR & Brink Avenue | 1976 | 71,797 | Poor |
All bridges nearby: Stanislaus County, CA bridge conditions · every bridge in Stanislaus County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.