I-90 over SR 21
Poor Condition54 years old5,897 vehicles/day
Location
| State | Washington |
| County | Adams |
| Location | 15.5 E Grant Co |
| Carries | I-90 |
| Crosses | SR 21 |
| Coordinates | 47.09728, -118.66786 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 170.9 ft (52.1 m) |
| Max Span | 62.0 ft (18.9 m) |
| Deck Width | 40.4 ft (12.3 m) |
| Deck Area | 640.8 sq m |
| Main Spans | 3 |
| Year Built | 1972 |
Traffic
| Avg Daily Traffic | 5,897 (2023) |
| Truck Traffic | 23% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0009185D0000000 |