ST 99 Nb/broadway over Rr Mbta/bmrr/csx
Fair Condition70 years old28,000 vehicles/day
Location
| State | Massachusetts |
| County | Middlesex |
| Location | 30 M S Of Jct Sr16&sr99 |
| Carries | ST 99 Nb/broadway |
| Crosses | Rr Mbta/bmrr/csx |
| Coordinates | 42.40163, -71.06027 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 110.9 ft (33.8 m) |
| Max Span | 107.0 ft (32.6 m) |
| Deck Width | 50.9 ft (15.5 m) |
| Deck Area | 523.9 sq m |
| Main Spans | 1 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 28,000 (2024) |
| Truck Traffic | 10% |
| Lanes On Bridge | 3 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | E120073GKDOT634 |