Third Avenue over Seal Slough
Fair Condition41 years old11,290 vehicles/day
Location
| State | California |
| County | San Mateo |
| Location | 0.4 Mi W Mrnrs Island Bl |
| Carries | Third Avenue |
| Crosses | Seal Slough |
| Coordinates | 37.57048, -122.29470 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Slab |
| Total Length | 1060.0 ft (323.1 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 80.1 ft (24.4 m) |
| Deck Area | 7883.6 sq m |
| Main Spans | 16 |
| Year Built | 1985 |
Traffic
| Avg Daily Traffic | 11,290 (2015) |
| Truck Traffic | 5% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 35C0152 |