I-5 (hwy 001) SB over Marquam Ramp SB
Fair Condition60 years old70,324 vehicles/day
Location
| State | Oregon |
| County | Multnomah |
| Location | West Marquam Interchange |
| Carries | I-5 (hwy 001) SB |
| Crosses | Marquam Ramp SB |
| Coordinates | 45.50560, -122.67350 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 1898.3 ft (578.6 m) |
| Max Span | 189.6 ft (57.8 m) |
| Deck Width | 37.1 ft (11.3 m) |
| Deck Area | 6538.2 sq m |
| Main Spans | 14 |
| Year Built | 1966 |
Traffic
| Avg Daily Traffic | 70,324 (2022) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 13 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 08591C001 30010 |