NB Airport Expy over Nae Aoa Tunnel
Good Condition16 years old34,200 vehicles/day
Location
| State | Washington |
| County | King |
| Location | 0.1 Mile N Of S 170th ST |
| Carries | NB Airport Expy |
| Crosses | Nae Aoa Tunnel |
| Coordinates | 47.45197, -122.30002 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 58.1 ft (17.7 m) |
| Max Span | 37.1 ft (11.3 m) |
| Deck Width | 122.0 ft (37.2 m) |
| Deck Area | 658.4 sq m |
| Main Spans | 2 |
| Year Built | 2010 |
Traffic
| Avg Daily Traffic | 34,200 (2016) |
| Truck Traffic | 2% |
| Lanes On Bridge | 5 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | Other Local Agencies |
| Historical Significance | Historical significance is not determined |
| Structure Number | 088544000000000 |