US 101 over South Nemah River
FairPacific County, Washington · 1.7 N JCT SR 4 · Structure no. 000000MB0000000
- Built
- 1951
- 74 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 40 ft
- 2 main spans
- Daily traffic
- 2,815
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 101 over South Nemah River is a wood or timber stringer/multi-beam or girder carrying US 101 over South Nemah River in Pacific County, Washington. It was built in 1951, so it is 74 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 40 ft (12.2 m) long and 36 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| 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 South Nemah River built?
It was built in 1951, making it 74 years old in 2025.
What condition is US 101 over South Nemah River 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 August 2024.
How much traffic does US 101 over South Nemah River carry?
About 2,815 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is US 101 over South Nemah River?
The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.8 m) and a deck 36 ft wide.
Who owns US 101 over South Nemah River?
It is owned by the State Highway Agency.