Or 206 (hwy 300) over Grass Valley Canyoncreek
Sherman County, Oregon · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Or 206 (hwy 300) over Grass Valley Canyoncreek in Sherman County, Oregon, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1959, making it 66 years old at the 2025 inventory.
- It carries about 419 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 33 of the 48 inventoried bridges in Sherman County rated fair (68.8%); 2 (4.2%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 7 to 6.
- Its most recent inspection on record is dated August 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 → (45.53661, -120.61788)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete tee beam |
| Length | about 185 ft |
| Location | 055 Mi SE Wasco |
| NBI structure number | 08614 300 00551 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oregon department of transportation.
Busiest bridges in Sherman County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-84 (hwy 002) over Deschutes River | 1964 | 16,485 | Fair |
| I-84 (hwy 002) over Spanish Hollow Creek | 1964 | 14,294 | Fair |
| I-84 (hwy 002) over Conn Rd | 1963 | 14,253 | Good |
| I-84 (hwy 002) over Helms Creek | 1964 | 14,253 | Good |
| US 97 (hwy 042) over UPRR | 2014 | 9,754 | Good |
| US 97 (hwy 042) over I-84 (hwy 002) | 2014 | 9,754 | Good |
All bridges nearby: Sherman County, OR bridge conditions · every bridge in Sherman County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.