311 TH Av SE over Skykomish Slough
Good Condition20 years old2,263 vehicles/day
Location
| State | Washington |
| County | Snohomish |
| Location | 0.5 S Jct Sr2 |
| Carries | 311 TH Av SE |
| Crosses | Skykomish Slough |
| Coordinates | 47.85418, -121.81484 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 91.5 ft (27.9 m) |
| Max Span | 86.9 ft (26.5 m) |
| Deck Width | 37.1 ft (11.3 m) |
| Deck Area | 315.3 sq m |
| Main Spans | 1 |
| Year Built | 2006 |
Traffic
| Avg Daily Traffic | 2,263 (2021) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 087405000000000 |