HWY 120 over Columbia Slough
Fair Condition93 years old11,492 vehicles/day
Location
| State | Oregon |
| County | Multnomah |
| Location | 5.5 Mi NW Portland Cc |
| Carries | HWY 120 |
| Crosses | Columbia Slough |
| Coordinates | 45.60038, -122.71951 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 337.9 ft (103 m) |
| Max Span | 85.0 ft (25.9 m) |
| Deck Width | 33.8 ft (10.3 m) |
| Deck Area | 1060.9 sq m |
| Main Spans | 1 |
| Year Built | 1933 |
Traffic
| Avg Daily Traffic | 11,492 (2022) |
| Truck Traffic | 15% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 01726 120 00038 |