SR 508 over Mill Creek
Fair Condition89 years old1,200 vehicles/day
Location
| State | Washington |
| County | Lewis |
| Location | 18.3 E Jct I-5 |
| Carries | SR 508 |
| Crosses | Mill Creek |
| Coordinates | 46.60459, -122.53420 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 32.2 ft (9.8 m) |
| Max Span | 16.1 ft (4.9 m) |
| Deck Width | 21.7 ft (6.6 m) |
| Deck Area | 64.7 sq m |
| Main Spans | 2 |
| Year Built | 1937 |
Traffic
| Avg Daily Traffic | 1,200 (2023) |
| Truck Traffic | 11% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000CO0000000 |