Grand Island Loop over Mosquito Creek
PoorPosted for loadYamhill County, Oregon · 700 MI S Dayton · Structure no. 11787F000
- Built
- 1961
- 64 years old
- Condition
- Poor
- inspected September 2024
- Type
- Channel Beam
- Concrete
- Length
- 77 ft
- 4 main spans
- Daily traffic
- 219
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Grand Island Loop over Mosquito Creek is a concrete channel beam carrying Grand Island Loop over Mosquito Creek in Yamhill County, Oregon. It was built in 1961, so it is 64 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 219 vehicles a day, roughly 40% of them trucks, projected to reach 244 by 2025. The structure is 77 ft (23.5 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Grand Island Loop over Mosquito Creek built?
It was built in 1961, making it 64 years old in 2025.
What condition is Grand Island Loop over Mosquito 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 September 2024.
How much traffic does Grand Island Loop over Mosquito Creek carry?
About 219 vehicles per day (2020 count), of which roughly 40% are trucks.
How long is Grand Island Loop over Mosquito Creek?
The structure is 77 ft (23.5 m) long with a longest span of 25 ft (7.6 m) and a deck 21 ft wide.
Who owns Grand Island Loop over Mosquito Creek?
It is owned by the County Highway Agency.