US 20 Main ST over Rr Mbta/bmrr
Fair Condition90 years old28,190 vehicles/day
Location
| State | Massachusetts |
| County | Middlesex |
| Location | .16 Km E Jct 60 & 20 |
| Carries | US 20 Main ST |
| Crosses | Rr Mbta/bmrr |
| Coordinates | 42.37786, -71.22364 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 233.9 ft (71.3 m) |
| Max Span | 115.2 ft (35.1 m) |
| Deck Width | 85.0 ft (25.9 m) |
| Deck Area | 1846.7 sq m |
| Main Spans | 1 |
| Year Built | 1936 (reconstructed 1991) |
Traffic
| Avg Daily Traffic | 28,190 (2020) |
| Truck Traffic | 3% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | W040152NHDOT634 |