SR 300 over Union River
Fair Condition66 years old12,136 vehicles/day
Location
| State | Washington |
| County | Mason |
| Location | 2.9 E State Park |
| Carries | SR 300 |
| Crosses | Union River |
| Coordinates | 47.45205, -122.83385 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 65.0 ft (19.8 m) |
| Max Span | 21.0 ft (6.4 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 168.3 sq m |
| Main Spans | 3 |
| Year Built | 1960 |
Traffic
| Avg Daily Traffic | 12,136 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0006393A0000000 |