Project and Visitr over Bonneville Dam
FairMultnomah County, Oregon · Old Lock Swing Bridge · Structure no. CEPNPPOR000BD01
- Built
- 1935
- 90 years old, rebuilt 1950
- Condition
- Fair
- inspected September 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 247 ft
- 1 main span
- Daily traffic
- 1,000
- 2024 count
- Owner
- Federal
- Corps of Engineers (Civil)
About this bridge
Project and Visitr over Bonneville Dam is a steel girder and floorbeam system carrying Project and Visitr over Bonneville Dam in Multnomah County, Oregon. It was built in 1935 and reconstructed in 1950, so it is 90 years old, older 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 5 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 15% of them trucks, projected to reach 1,000 by 2042. The structure is 247 ft (75.4 m) long and 26 ft wide. If it were closed, the detour would be 16.2 mi (26 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Project and Visitr over Bonneville Dam built?
It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1950.
What condition is Project and Visitr 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 Project and Visitr over Bonneville Dam carry?
About 1,000 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is Project and Visitr over Bonneville Dam?
The structure is 247 ft (75.4 m) long with a longest span of 100 ft (30.4 m) and a deck 26 ft wide.
Who owns Project and Visitr over Bonneville Dam?
It is owned by the Corps of Engineers (Civil).