Old Duncans Grd RD over Austin Creek
Poor Condition102 years old30 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | Btn Czdero Hy&austn CR RD |
| Carries | Old Duncans Grd RD |
| Crosses | Austin Creek |
| Coordinates | 38.47113, -123.04669 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 265.1 ft (80.8 m) |
| Max Span | 117.1 ft (35.7 m) |
| Deck Width | 17.7 ft (5.4 m) |
| Deck Area | 436.3 sq m |
| Main Spans | 2 |
| Year Built | 1924 |
Traffic
| Avg Daily Traffic | 30 (2015) |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20C0094 |