Headquarters RD over I-5
GoodCowlitz County, Washington · 6.3 N JCT SR 4 · Structure no. 0009597E0000000
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 407 ft
- 5 main spans
- Daily traffic
- 936
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Headquarters RD over I-5 is a prestressed concrete continuous stringer/multi-beam or girder carrying Headquarters RD over I-5 in Cowlitz County, Washington. It was built in 1975, so it is 50 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 936 vehicles a day, roughly 1% of them trucks, projected to reach 1,337 by 2039. The structure is 407 ft (124.1 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Headquarters RD over I-5 built?
It was built in 1975, making it 50 years old in 2025.
What condition is Headquarters RD over I-5 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.
How much traffic does Headquarters RD over I-5 carry?
About 936 vehicles per day (2017 count), of which roughly 1% are trucks.
How long is Headquarters RD over I-5?
The structure is 407 ft (124.1 m) long with a longest span of 104 ft (31.7 m) and a deck 37 ft wide.
Who owns Headquarters RD over I-5?
It is owned by the State Highway Agency.