US 101 over Tide Slough
FairPacific County, Washington · 6.7 N JCT SR 4 · Structure no. 0002539D0000000
- Built
- 1939
- 86 years old
- Condition
- Fair
- inspected May 2023
- Type
- Slab
- Wood or Timber
- Length
- 138 ft
- 8 main spans
- Daily traffic
- 2,815
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 101 over Tide Slough is a wood or timber slab carrying US 101 over Tide Slough in Pacific County, Washington. It was built in 1939, so it is 86 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 2,815 vehicles a day, roughly 8% of them trucks, projected to reach 3,300 by 2039. The structure is 138 ft (42.1 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 101 over Tide Slough built?
It was built in 1939, making it 86 years old in 2025.
What condition is US 101 over Tide Slough 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 May 2023.
How much traffic does US 101 over Tide Slough carry?
About 2,815 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is US 101 over Tide Slough?
The structure is 138 ft (42.1 m) long with a longest span of 17 ft (5.2 m) and a deck 31 ft wide.
Who owns US 101 over Tide Slough?
It is owned by the State Highway Agency.