SR 27 over Silver Creek
FairWhitman County, Washington · 8.4 N JCT SR 272 · Structure no. 0000499B0000000
- Built
- 1922
- 103 years old
- Condition
- Fair
- inspected October 2024
- Type
- Tee Beam
- Concrete
- Length
- 43 ft
- 1 main span
- Daily traffic
- 1,454
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SR 27 over Silver Creek is a concrete tee beam carrying SR 27 over Silver Creek in Whitman County, Washington. It was built in 1922, so it is 103 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 1,454 vehicles a day, roughly 9% of them trucks, projected to reach 1,528 by 2039. The structure is 43 ft (13.1 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 SR 27 over Silver Creek built?
It was built in 1922, making it 103 years old in 2025.
What condition is SR 27 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 October 2024.
How much traffic does SR 27 over Silver Creek carry?
About 1,454 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is SR 27 over Silver Creek?
The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.
Who owns SR 27 over Silver Creek?
It is owned by the State Highway Agency.