Or 99w(hwy 91)sb over Rock Creek (onion Flat)
Fair Condition95 years old14,012 vehicles/day
Location
| State | Oregon |
| County | Washington |
| Location | 14 Mi. N. Of Sherwood |
| Carries | Or 99w(hwy 91)sb |
| Crosses | Rock Creek (onion Flat) |
| Coordinates | 45.38185, -122.82676 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 120.1 ft (36.6 m) |
| Max Span | 45.9 ft (14 m) |
| Deck Width | 42.3 ft (12.9 m) |
| Deck Area | 472.1 sq m |
| Main Spans | 3 |
| Year Built | 1931 |
Traffic
| Avg Daily Traffic | 14,012 (2022) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 01578 01W 01382 |