Visitor & Project over Bonneville Dam
FairMultnomah County, Oregon · New Lock Swing Bridge · Structure no. CEPNPPOR000BD12
- Built
- 1992
- 33 years old
- Condition
- Fair
- inspected September 2024
- Type
- Movable - Swing
- Prestressed Concrete Continuous
- Length
- 338 ft
- 2 main spans
- Daily traffic
- 1,000
- 2024 count
- Owner
- Federal
- Corps of Engineers (Civil)
About this bridge
Visitor & Project over Bonneville Dam is a prestressed concrete continuous movable - swing carrying Visitor & Project over Bonneville Dam in Multnomah County, Oregon. It was built in 1992, so it is 33 years old, younger than the Oregon average of 49.9 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,100 by 2041. The structure is 338 ft (102.9 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Visitor & Project over Bonneville Dam built?
It was built in 1992, making it 33 years old in 2025.
What condition is Visitor & Project over Bonneville Dam 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 September 2024.
How much traffic does Visitor & Project over Bonneville Dam carry?
About 1,000 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is Visitor & Project over Bonneville Dam?
The structure is 338 ft (102.9 m) long with a longest span of 187 ft (56.9 m) and a deck 31 ft wide.
Who owns Visitor & Project over Bonneville Dam?
It is owned by the Corps of Engineers (Civil).