Structure 8650C0000000 · Skagit County, WA
Carries I-5 over I-5 Drainage, 3.8 N Snohomish Co.
A culvert 21 ft across. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.
| State | Washington |
| County | Skagit |
| Location | 3.8 N Snohomish Co |
| Carries | I-5 |
| Crosses | I-5 Drainage |
| Coordinates | 48.34426, -122.33614 |
| Material | Steel |
| Design | Culvert |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 21.0 ft (6.4 m) |
| Deck Area | 253.4 sq m |
| Main Spans | 1 |
| Year Built | 1970 |
| Avg Daily Traffic | 36,919 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 8 |
| Last Inspection | October 2021 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 0008650C0000000 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.