Cascade River RD over Marble Creek
FairSkagit County, Washington · 8.3 E JCT SR 20 · Structure no. 080839000000000
- Built
- 1982
- 43 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 120 ft
- 1 main span
- Daily traffic
- 188
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Cascade River RD over Marble Creek is a prestressed concrete stringer/multi-beam or girder carrying Cascade River RD over Marble Creek in Skagit County, Washington. It was built in 1982, so it is 43 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 188 vehicles a day, roughly 4% of them trucks, projected to reach 230 by 2041. The structure is 120 ft (36.6 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Cascade River RD over Marble Creek built?
It was built in 1982, making it 43 years old in 2025.
What condition is Cascade River RD over Marble 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 June 2024.
How much traffic does Cascade River RD over Marble Creek carry?
About 188 vehicles per day (2021 count), of which roughly 4% are trucks.
How long is Cascade River RD over Marble Creek?
The structure is 120 ft (36.6 m) long with a longest span of 116 ft (35.4 m) and a deck 29 ft wide.
Who owns Cascade River RD over Marble Creek?
It is owned by the County Highway Agency.