Mack RD over Sumas River
Fair Condition94 years old106 vehicles/day
Location
| State | Washington |
| County | Whatcom |
| Location | 00.2 W Oat Coles RD |
| Carries | Mack RD |
| Crosses | Sumas River |
| Coordinates | 48.89167, -122.30500 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Channel Beam |
| Total Length | 30.8 ft (9.4 m) |
| Max Span | 30.8 ft (9.4 m) |
| Deck Width | 25.6 ft (7.8 m) |
| Deck Area | 73.3 sq m |
| Main Spans | 1 |
| Year Built | 1932 (reconstructed 2002) |
Traffic
| Avg Daily Traffic | 106 (2021) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 080909000000000 |