St113 /st3a/kendll over Rr Bmrr
Fair Condition96 years old42,000 vehicles/day
Location
| State | Massachusetts |
| County | Middlesex |
| Location | At Tyngsborough Bridge |
| Carries | St113 /st3a/kendll |
| Crosses | Rr Bmrr |
| Coordinates | 42.67621, -71.42237 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 66.9 ft (20.4 m) |
| Max Span | 59.1 ft (18 m) |
| Deck Width | 42.0 ft (12.8 m) |
| Deck Area | 261.1 sq m |
| Main Spans | 1 |
| Year Built | 1930 (reconstructed 2012) |
Traffic
| Avg Daily Traffic | 42,000 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | T090022EMDOTNBI |