I-5 over S 259th Pl
GoodKing County, Washington · 5.6 N JCT SR 18 · Structure no. 0006186A0000000
- Built
- 1960
- 65 years old, rebuilt 1991
- Condition
- Good
- inspected October 2024
- Type
- Slab
- Concrete Continuous
- Length
- 162 ft
- 3 main spans
- Daily traffic
- 104,261
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-5 over S 259th Pl is a concrete continuous slab carrying I-5 over S 259th Pl in King County, Washington. It was built in 1960 and reconstructed in 1991, so it is 65 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 104,261 vehicles a day, roughly 7% of them trucks, projected to reach 149,652 by 2039. The structure is 162 ft (49.4 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 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 I-5 over S 259th Pl built?
It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1991.
What condition is I-5 over S 259th Pl 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 2024.
How much traffic does I-5 over S 259th Pl carry?
About 104,261 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is I-5 over S 259th Pl?
The structure is 162 ft (49.4 m) long with a longest span of 64 ft (19.5 m) and a deck 68 ft wide.
Who owns I-5 over S 259th Pl?
It is owned by the State Highway Agency.