Old HWY 99 over Overflow Channel
FairSkagit County, Washington · 1.0 N JCT Cook Rd. · Structure no. 088011000000000
- Built
- 2006
- 19 years old
- Condition
- Fair
- inspected August 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 108 ft
- 2 main spans
- Daily traffic
- 4,372
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Old HWY 99 over Overflow Channel is a prestressed concrete slab carrying Old HWY 99 over Overflow Channel in Skagit County, Washington. It was built in 2006, so it is 19 years old, younger 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 6 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 4,372 vehicles a day, roughly 10% of them trucks, projected to reach 7,896 by 2041. The structure is 108 ft (32.9 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 over Overflow Channel built?
It was built in 2006, making it 19 years old in 2025.
What condition is Old HWY 99 over Overflow Channel 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 August 2023.
How much traffic does Old HWY 99 over Overflow Channel carry?
About 4,372 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is Old HWY 99 over Overflow Channel?
The structure is 108 ft (32.9 m) long with a longest span of 52 ft (15.8 m) and a deck 44 ft wide.
Who owns Old HWY 99 over Overflow Channel?
It is owned by the County Highway Agency.