Spillway Bridge over Spillway Channel
GoodGarfield County, Washington · Lower Granite Dam · Structure no. CEPNPWWA0LGRSPY
- Built
- 1968
- 57 years old
- Condition
- Good
- inspected September 2021
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 512 ft
- 8 main spans
- Daily traffic
- 150
- 2020 count
- Owner
- Federal
- Corps of Engineers (Civil)
About this bridge
Spillway Bridge over Spillway Channel is a prestressed concrete box beam or girders - multiple carrying Spillway Bridge over Spillway Channel in Garfield County, Washington. It was built in 1968, so it is 57 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 200 by 2038. The structure is 512 ft (156 m) long and 36 ft wide. If it were closed, the detour would be 65.2 mi (105 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 | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Spillway Bridge over Spillway Channel built?
It was built in 1968, making it 57 years old in 2025.
What condition is Spillway Bridge over Spillway Channel 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 2021.
How much traffic does Spillway Bridge over Spillway Channel carry?
About 150 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Spillway Bridge over Spillway Channel?
The structure is 512 ft (156 m) long with a longest span of 64 ft (19.5 m) and a deck 36 ft wide.
Who owns Spillway Bridge over Spillway Channel?
It is owned by the Corps of Engineers (Civil).