Hwy 001 NB over Columbia River
Multnomah County, Oregon · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Hwy 001 NB over Columbia River in Multnomah County, Oregon, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1916 and reconstructed in 1958, making it 109 years old at the 2025 inventory.
- It carries about 65,013 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 405 of the 473 inventoried bridges in Multnomah County rated fair (85.6%); 12 (2.5%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (45.61804, -122.67527)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 5 | Fair condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Steel movable lift |
| Length | about 3,538 ft |
| Location | at Interstate Bridge |
| NBI structure number | 01377A001 30838 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oregon department of transportation.
Busiest bridges in Multnomah County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Hwy 064 over Division St | 1979 | 166,664 | Fair |
| Hwy 064 over Hwy 026 | 1979 | 166,664 | Fair |
| Hwy 064 over Hwy 064 Conn 2 | 1979 | 161,490 | Fair |
| Hwy 064 over Harold St | 1978 | 151,700 | Fair |
| Hwy 002 over OXNG Hwy 002 WB Conn | 1955 | 151,336 | Fair |
| Hwy 064 over Columbia River | 1982 | 148,936 | Fair |
All bridges nearby: Multnomah County, OR bridge conditions · every bridge in Multnomah County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.