NW Sammamish Road over Tributary 170
Good Condition18 years old13,500 vehicles/day
Location
| State | Washington |
| County | King |
| Location | 0.5 M West Of Sr-900 |
| Carries | NW Sammamish Road |
| Crosses | Tributary 170 |
| Coordinates | 47.55192, -122.06514 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 25.9 ft (7.9 m) |
| Max Span | 25.9 ft (7.9 m) |
| Deck Width | 62.0 ft (18.9 m) |
| Deck Area | 149.3 sq m |
| Main Spans | 1 |
| Year Built | 2008 |
Traffic
| Avg Daily Traffic | 13,500 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 088029000000000 |