175 TH S.W. over Overflow Channel
GoodThurston County, Washington · 0.6 M W of Moon RD · Structure no. 086337000000000
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected March 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 42 ft
- 1 main span
- Daily traffic
- 77
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
175 TH S.W. over Overflow Channel is a prestressed concrete slab carrying 175 TH S.W. over Overflow Channel in Thurston County, Washington. It was built in 1997, so it is 28 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 77 vehicles a day, roughly 10% of them trucks, projected to reach 114 by 2041. The structure is 42 ft (12.8 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 175 TH S.W. over Overflow Channel built?
It was built in 1997, making it 28 years old in 2025.
What condition is 175 TH S.W. over Overflow 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 March 2023.
How much traffic does 175 TH S.W. over Overflow Channel carry?
About 77 vehicles per day (2019 count), of which roughly 10% are trucks.
How long is 175 TH S.W. over Overflow Channel?
The structure is 42 ft (12.8 m) long with a longest span of 41 ft (12.5 m) and a deck 28 ft wide.
Who owns 175 TH S.W. over Overflow Channel?
It is owned by the County Highway Agency.