Tarpiscan RD 19550 over Colockum Creek
GoodChelan County, Washington · 14.34S/W Wenatchee · Structure no. 082635000000000
- Built
- 1976
- 49 years old, rebuilt 2016
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 36 ft
- 1 main span
- Daily traffic
- 161
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
Tarpiscan RD 19550 over Colockum Creek is a prestressed concrete stringer/multi-beam or girder carrying Tarpiscan RD 19550 over Colockum Creek in Chelan County, Washington. It was built in 1976 and reconstructed in 2016, so it is 49 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 161 vehicles a day, roughly 7% of them trucks, projected to reach 201 by 2043. The structure is 36 ft (11 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 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 Tarpiscan RD 19550 over Colockum Creek built?
It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2016.
What condition is Tarpiscan RD 19550 over Colockum 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 October 2023.
How much traffic does Tarpiscan RD 19550 over Colockum Creek carry?
About 161 vehicles per day (2019 count), of which roughly 7% are trucks.
How long is Tarpiscan RD 19550 over Colockum Creek?
The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 24 ft wide.
Who owns Tarpiscan RD 19550 over Colockum Creek?
It is owned by the County Highway Agency.