US 12 over Slough
Good Condition40 years old7,629 vehicles/day
Location
| State | Washington |
| County | Grays Harbor |
| Location | 17.4 E Jct SR 8 |
| Carries | US 12 |
| Crosses | Slough |
| Coordinates | 46.82730, -123.16278 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Slab |
| Total Length | 130.9 ft (39.9 m) |
| Max Span | 43.0 ft (13.1 m) |
| Deck Width | 41.0 ft (12.5 m) |
| Deck Area | 498.8 sq m |
| Main Spans | 3 |
| Year Built | 1986 |
Traffic
| Avg Daily Traffic | 7,629 (2023) |
| Truck Traffic | 16% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0012999A0000000 |