Colville ST over Mill Creek
GoodWalla Walla County, Washington · Colville and Mill CR · Structure no. 085355000000000
- Built
- 1920
- 105 years old, rebuilt 1989
- Condition
- Good
- inspected September 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 50 ft
- 2 main spans
- Daily traffic
- 5,139
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Colville ST over Mill Creek is a prestressed concrete slab carrying Colville ST over Mill Creek in Walla Walla County, Washington. It was built in 1920 and reconstructed in 1989, so it is 105 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 5,139 vehicles a day, roughly 5% of them trucks, projected to reach 9,000 by 2043. The structure is 50 ft (15.2 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Colville ST over Mill Creek built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1989.
What condition is Colville ST over Mill Creek 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 2023.
How much traffic does Colville ST over Mill Creek carry?
About 5,139 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Colville ST over Mill Creek?
The structure is 50 ft (15.2 m) long with a longest span of 25 ft (7.6 m) and a deck 63 ft wide.
Who owns Colville ST over Mill Creek?
It is owned by the City or Municipal Highway Agency.