20th Ave. over Lake Sacajawea
Fair Condition86 years old3,133 vehicles/day
Location
| State | Washington |
| County | Cowlitz |
| Location | Jct 20th Ave. & Lake Saca |
| Carries | 20th Ave. |
| Crosses | Lake Sacajawea |
| Coordinates | 46.13025, -122.94700 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 163.1 ft (49.7 m) |
| Max Span | 32.2 ft (9.8 m) |
| Deck Width | 36.1 ft (11 m) |
| Deck Area | 546.7 sq m |
| Main Spans | 9 |
| Year Built | 1940 |
Traffic
| Avg Daily Traffic | 3,133 (2019) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 085584000000000 |