Spillway Bridge over Spillway Channel
FairWalla Walla County, Washington · Lower Monumental Dam · Structure no. CEPNPWWA0LMASPY
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected September 2024
- Type
- Box Beam or Girders - Single or Spread
- Concrete
- Length
- 512 ft
- 8 main spans
- Daily traffic
- 50
- 2022 count
- Owner
- Federal
- Corps of Engineers (Civil)
About this bridge
Spillway Bridge over Spillway Channel is a concrete box beam or girders - single or spread carrying Spillway Bridge over Spillway Channel in Walla Walla County, Washington. It was built in 1966, so it is 59 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 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 50 by 2042. The structure is 512 ft (156 m) long and 23 ft wide. If it were closed, the detour would be 64 mi (103 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 1966, making it 59 years old in 2025.
What condition is Spillway Bridge over Spillway 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 September 2024.
How much traffic does Spillway Bridge over Spillway Channel carry?
About 50 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is Spillway Bridge over Spillway Channel?
The structure is 512 ft (156 m) long with a longest span of 50 ft (15.2 m) and a deck 23 ft wide.
Who owns Spillway Bridge over Spillway Channel?
It is owned by the Corps of Engineers (Civil).