Headquarters RD over I-5
Good Condition51 years old936 vehicles/day
Location
| State | Washington |
| County | Cowlitz |
| Location | 6.3 N Jct SR 4 |
| Carries | Headquarters RD |
| Crosses | I-5 |
| Coordinates | 46.23381, -122.88831 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 407.2 ft (124.1 m) |
| Max Span | 104.0 ft (31.7 m) |
| Deck Width | 37.4 ft (11.4 m) |
| Deck Area | 1414.7 sq m |
| Main Spans | 5 |
| Year Built | 1975 |
Traffic
| Avg Daily Traffic | 936 (2017) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 6 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0009597E0000000 |