Military RD over SR 18
GoodKing County, Washington · 1.0 E JCT I-5 · Structure no. 0005444A0000000
- Built
- 1958
- 67 years old
- Condition
- Good
- inspected April 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 319 ft
- 3 main spans
- Daily traffic
- 12,502
- 2002 count
- Owner
- State
- State Highway Agency
About this bridge
Military RD over SR 18 is a concrete continuous box beam or girders - multiple carrying Military RD over SR 18 in King County, Washington. It was built in 1958, so it is 67 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 12,502 vehicles a day, roughly 5% of them trucks, projected to reach 21,853 by 2036. The structure is 319 ft (97.2 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 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 Military RD over SR 18 built?
It was built in 1958, making it 67 years old in 2025.
What condition is Military RD over SR 18 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 April 2023.
How much traffic does Military RD over SR 18 carry?
About 12,502 vehicles per day (2002 count), of which roughly 5% are trucks.
How long is Military RD over SR 18?
The structure is 319 ft (97.2 m) long with a longest span of 128 ft (39 m) and a deck 34 ft wide.
Who owns Military RD over SR 18?
It is owned by the State Highway Agency.