State Route 37 over Tolay Creek
Good Condition95 years old32,000 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 04-son-037-4.04 |
| Carries | State Route 37 |
| Crosses | Tolay Creek |
| Coordinates | 38.15166, -122.44696 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 61.0 ft (18.6 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 42.0 ft (12.8 m) |
| Deck Area | 238.1 sq m |
| Main Spans | 1 |
| Year Built | 1931 (reconstructed 1972) |
Traffic
| Avg Daily Traffic | 32,000 (2012) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20 0090 |