West Shore Drive over Sain Creek
Washington County, Oregon · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- West Shore Drive over Sain Creek in Washington County, Oregon, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1974, making it 51 years old at the 2025 inventory.
- It carries about 458 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 227 of the 334 inventoried bridges in Washington County rated fair (68.0%); 11 (3.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated good in the 2024 inventory and is now fair (superstructure 7 to 6, deck 7 to 8, substructure 7 to 8).
- Its most recent inspection on record is dated September 2024, on a 24-month routine inspection cycle.
- 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 → (45.48194, -123.23968)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 8 | Very good condition |
| Superstructure | 7 | 6 | Satisfactory condition |
| Substructure | 7 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 185 ft |
| Location | 0267 Mi W Scoggin Valley |
| NBI structure number | 671402A68000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
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.