State Route 121 over Tolay Creek
Good Condition30 years old16,150 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 04-son-121-1.53 |
| Carries | State Route 121 |
| Crosses | Tolay Creek |
| Coordinates | 38.16996, -122.45736 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 71.2 ft (21.7 m) |
| Max Span | 35.4 ft (10.8 m) |
| Deck Width | 43.6 ft (13.3 m) |
| Deck Area | 288.6 sq m |
| Main Spans | 2 |
| Year Built | 1996 |
Traffic
| Avg Daily Traffic | 16,150 (2009) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2022 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20 0020 |