Old HWY 99 North over Silver Creek
FairSkagit County, Washington · 0.4 SE JCT Lake Samish RD · Structure no. 080691000000000
- Built
- 1934
- 91 years old
- Condition
- Fair
- inspected May 2023
- Type
- Tee Beam
- Concrete
- Length
- 38 ft
- 1 main span
- Daily traffic
- 1,687
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Old HWY 99 North over Silver Creek is a concrete tee beam carrying Old HWY 99 North over Silver Creek in Skagit County, Washington. It was built in 1934, so it is 91 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 1,687 vehicles a day, roughly 9% of them trucks, projected to reach 3,046 by 2041. The structure is 38 ft (11.6 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old HWY 99 North over Silver Creek built?
It was built in 1934, making it 91 years old in 2025.
What condition is Old HWY 99 North over Silver Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.
How much traffic does Old HWY 99 North over Silver Creek carry?
About 1,687 vehicles per day (2021 count), of which roughly 9% are trucks.
How long is Old HWY 99 North over Silver Creek?
The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m) and a deck 31 ft wide.
Who owns Old HWY 99 North over Silver Creek?
It is owned by the County Highway Agency.