NW Joss Ave. over Unnamed Channel
Washington County, Oregon · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- NW Joss Ave. over Unnamed Channel in Washington County, Oregon, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2007, making it 18 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2016).
- Its listed owner is the county highway agency.
- It is one of 96 of the 334 inventoried bridges in Washington County rated good (28.7%); 11 (3.3%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (45.56511, -122.84916)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 74 ft |
| Location | Mp 0.01 |
| NBI structure number | 23237 000 00000 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oregon department of transportation.
Busiest bridges in Washington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-5 (hwy 001) over Lower Boonesferry | 1975 | 156,558 | Fair |
| I-5 (hwy 001) over Tualatin River | 1975 | 156,016 | Fair |
| I-5 (hwy 001) over P&w RR | 1975 | 154,838 | Fair |
| US 26 (hwy 047) EB over Cedar Hills Blvd | 1966 | 144,211 | Fair |
| US 26 (hwy 047) over Hwy 144 | 1986 | 133,089 | Fair |
| US 26 (Hwy 047) over Light Rail Transit | 1996 | 133,089 | Fair |
All bridges nearby: Washington County, OR bridge conditions · every bridge in Washington County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.