E Lake Sammamish over Drainage Ditch
GoodKing County, Washington · 0.5 M N of Inglewood · Structure no. 083987000000000
- Built
- 1961
- 64 years old, rebuilt 2010
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 63 ft
- 1 main span
- Daily traffic
- 23,000
- 2021 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
E Lake Sammamish over Drainage Ditch is a prestressed concrete stringer/multi-beam or girder carrying E Lake Sammamish over Drainage Ditch in King County, Washington. It was built in 1961 and reconstructed in 2010, so it is 64 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 23,000 vehicles a day, roughly 5% of them trucks, projected to reach 36,000 by 2041. The structure is 63 ft (19.2 m) long and 53 ft wide. If it were closed, the detour would be 19.9 mi (32 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. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was E Lake Sammamish over Drainage Ditch built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2010.
What condition is E Lake Sammamish over Drainage Ditch 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 September 2023.
How much traffic does E Lake Sammamish over Drainage Ditch carry?
About 23,000 vehicles per day (2021 count), of which roughly 5% are trucks.
How long is E Lake Sammamish over Drainage Ditch?
The structure is 63 ft (19.2 m) long with a longest span of 61 ft (18.6 m) and a deck 53 ft wide.
Who owns E Lake Sammamish over Drainage Ditch?
It is owned by the City or Municipal Highway Agency.