ST 9 Boylston ST over Water Charles River
Fair Condition126 years old51,270 vehicles/day
Location
| State | Massachusetts |
| County | Middlesex |
| Location | Newton-wellesley Twn Line |
| Carries | ST 9 Boylston ST |
| Crosses | Water Charles River |
| Coordinates | 42.31691, -71.22805 |
Condition Ratings
| Overall Condition | Fair |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 76.1 ft (23.2 m) |
| Max Span | 49.9 ft (15.2 m) |
| Deck Width | 161.1 ft (49.1 m) |
| Deck Area | 1139.1 sq m |
| Main Spans | 2 |
| Year Built | 1900 (reconstructed 1932) |
Traffic
| Avg Daily Traffic | 51,270 (2022) |
| Truck Traffic | 4% |
| Lanes On Bridge | 6 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Structure Number | N120042EBDOTNBI |