US 12 over Slough
Fair Condition100 years old10,063 vehicles/day
Location
| State | Washington |
| County | Thurston |
| Location | 1.5 E Grays Hbr Co |
| Carries | US 12 |
| Crosses | Slough |
| Coordinates | 46.82519, -123.12972 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 44.9 ft (13.7 m) |
| Max Span | 44.9 ft (13.7 m) |
| Deck Width | 39.0 ft (11.9 m) |
| Deck Area | 163.0 sq m |
| Main Spans | 1 |
| Year Built | 1926 (reconstructed 1983) |
Traffic
| Avg Daily Traffic | 10,063 (2023) |
| Truck Traffic | 14% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 0001000A0000000 |