Thornton Lakes Roa over Thornton Creek
Fair Condition74 years old50 vehicles/day
Location
| State | Washington |
| County | Skagit |
| Location | Turn Left From Route 20 A |
| Carries | Thornton Lakes Roa |
| Crosses | Thornton Creek |
| Coordinates | 48.64972, -121.30756 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 50.9 ft (15.5 m) |
| Max Span | 46.9 ft (14.3 m) |
| Deck Width | 13.5 ft (4.1 m) |
| Deck Area | 63.5 sq m |
| Main Spans | 1 |
| Year Built | 1952 (reconstructed 1979) |
Traffic
| Avg Daily Traffic | 50 (2019) |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | National Park Service |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 9470003P0000000 |