IRR BIA RTE 18 over Trib to Quinault River
GoodGrays Harbor County, Washington · 3 KM S of Amanda Pk Junct · Structure no. 0000P06117B1804
- Built
- 2019
- 6 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 105 ft
- 1 main span
- Daily traffic
- 2,021
- 50 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 18 over Trib to Quinault River is a steel stringer/multi-beam or girder carrying IRR BIA RTE 18 over Trib to Quinault River in Grays Harbor County, Washington. It was built in 2019, so it is 6 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 2,021 vehicles a day, roughly 20% of them trucks, projected to reach 75 by 2040. The structure is 105 ft (32 m) long and 19 ft wide. If it were closed, the detour would be 5 mi (8 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 IRR BIA RTE 18 over Trib to Quinault River built?
It was built in 2019, making it 6 years old in 2025.
What condition is IRR BIA RTE 18 over Trib to Quinault River 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 August 2024.
How much traffic does IRR BIA RTE 18 over Trib to Quinault River carry?
About 2,021 vehicles per day (50 count), of which roughly 20% are trucks.
How long is IRR BIA RTE 18 over Trib to Quinault River?
The structure is 105 ft (32 m) long with a longest span of 102 ft (31.1 m) and a deck 19 ft wide.
Who owns IRR BIA RTE 18 over Trib to Quinault River?
It is owned by the Bureau of Indian Affairs.