ST 3 A/boston RD over Water Shawsheen River
Fair Condition111 years old19,400 vehicles/day
Location
| State | Massachusetts |
| County | Middlesex |
| Location | 0.25 Mi E Rt3a/allen RD |
| Carries | ST 3 A/boston RD |
| Crosses | Water Shawsheen River |
| Coordinates | 42.53457, -71.23355 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 27.9 ft (8.5 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 66.3 ft (20.2 m) |
| Deck Area | 171.7 sq m |
| Main Spans | 1 |
| Year Built | 1915 (reconstructed 1930) |
Traffic
| Avg Daily Traffic | 19,400 (2016) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | B120092DFDOTNBI |