Mountain Loop HWY over Backman Creek
Fair Condition47 years old812 vehicles/day
Location
| State | Washington |
| County | Snohomish |
| Location | 2.9 SE Jct SR 530 |
| Carries | Mountain Loop HWY |
| Crosses | Backman Creek |
| Coordinates | 48.22167, -121.57917 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Slab |
| Total Length | 44.0 ft (13.4 m) |
| Max Span | 40.7 ft (12.4 m) |
| Deck Width | 36.4 ft (11.1 m) |
| Deck Area | 148.7 sq m |
| Main Spans | 1 |
| Year Built | 1979 |
Traffic
| Avg Daily Traffic | 812 (2021) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 084928000000000 |