HWY 105 over Old Youngs Bay
PoorPosted for loadClatsop County, Oregon · 002 MI S Astoria · Structure no. 00330 105 00689
- Built
- 1921
- 104 years old, rebuilt 1933
- Condition
- Poor
- inspected May 2024
- Type
- Movable - Bascule
- Steel
- Length
- 1,845 ft
- 1 main span
- Daily traffic
- 7,781
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
HWY 105 over Old Youngs Bay is a steel movable - bascule carrying HWY 105 over Old Youngs Bay in Clatsop County, Oregon. It was built in 1921 and reconstructed in 1933, so it is 104 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. Its operating status is: posted for load restriction.
It carries about 7,781 vehicles a day, roughly 14% of them trucks, projected to reach 9,900 by 2042. The structure is 1,845 ft (562.4 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 HWY 105 over Old Youngs Bay built?
It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1933.
What condition is HWY 105 over Old Youngs Bay 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 May 2024.
How much traffic does HWY 105 over Old Youngs Bay carry?
About 7,781 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is HWY 105 over Old Youngs Bay?
The structure is 1,845 ft (562.4 m) long with a longest span of 166 ft (50.7 m) and a deck 33 ft wide.
Who owns HWY 105 over Old Youngs Bay?
It is owned by the State Highway Agency.