US 12 over Overflow Channel
Good Condition45 years old8,498 vehicles/day
Location
| State | Washington |
| County | Thurston |
| Location | 0.4 E Grays Hbr Co |
| Carries | US 12 |
| Crosses | Overflow Channel |
| Coordinates | 46.82664, -123.15249 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Slab |
| Total Length | 138.1 ft (42.1 m) |
| Max Span | 34.1 ft (10.4 m) |
| Deck Width | 41.0 ft (12.5 m) |
| Deck Area | 526.2 sq m |
| Main Spans | 4 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 8,498 (2023) |
| Truck Traffic | 17% |
| 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 | 0012104A0000000 |