US101 (hwy 9) over Arch Cape Creek
PoorClatsop County, Oregon · 001 MI N Arch Cape Tunnel · Structure no. 01797 009 03557
- Built
- 1937
- 88 years old
- Condition
- Poor
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 166 ft
- 6 main spans
- Daily traffic
- 5,508
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US101 (hwy 9) over Arch Cape Creek is a wood or timber stringer/multi-beam or girder carrying US101 (hwy 9) over Arch Cape Creek in Clatsop County, Oregon. It was built in 1937, so it is 88 years old, older than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 5,508 vehicles a day, roughly 12% of them trucks, projected to reach 8,490 by 2042. The structure is 166 ft (50.6 m) long and 35 ft wide. If it were closed, the detour would be 27.3 mi (44 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US101 (hwy 9) over Arch Cape Creek built?
It was built in 1937, making it 88 years old in 2025.
What condition is US101 (hwy 9) over Arch Cape Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.
How much traffic does US101 (hwy 9) over Arch Cape Creek carry?
About 5,508 vehicles per day (2022 count), of which roughly 12% are trucks.
How long is US101 (hwy 9) over Arch Cape Creek?
The structure is 166 ft (50.6 m) long with a longest span of 29 ft (8.8 m) and a deck 35 ft wide.
Who owns US101 (hwy 9) over Arch Cape Creek?
It is owned by the State Highway Agency.