Structure 49C0309 · San Luis Obispo County, CA
Carries Thompson RD over Deleissigues Creek, 0.75 Mi NW Tefft ST.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.
How ratings work22 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a tee-beam bridge.
| State | California |
| County | San Luis Obispo |
| Location | 0.75 Mi NW Tefft ST |
| Carries | Thompson RD |
| Crosses | Deleissigues Creek |
| Coordinates | 35.05048, -120.48417 |
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 59.4 ft (18.1 m) |
| Deck Area | 121.3 sq m |
| Main Spans | 1 |
| Year Built | 1916 (reconstructed 1930) |
| Avg Daily Traffic | 5,834 (2014) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Last Inspection | September 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 49C0309 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.