St109 Spring ST over Water Charles River
Fair Condition165 years old40,200 vehicles/day
Location
| State | Massachusetts |
| County | Suffolk |
| Location | @ Dedham Tl = D05006 |
| Carries | St109 Spring ST |
| Crosses | Water Charles River |
| Coordinates | 42.27085, -71.17334 |
Condition Ratings
| Overall Condition | Fair |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 125.0 ft (38.1 m) |
| Max Span | 19.0 ft (5.8 m) |
| Deck Width | 57.4 ft (17.5 m) |
| Deck Area | 666.8 sq m |
| Main Spans | 5 |
| Year Built | 1861 (reconstructed 2002) |
Traffic
| Avg Daily Traffic | 40,200 (2024) |
| Truck Traffic | 2% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | B161772KYDOTNBI |