St135 Union ST over Water Sudbury River
Fair Condition126 years old11,481 vehicles/day
Location
| State | Massachusetts |
| County | Middlesex |
| Location | 2.5 Mi W Of 126 & 135 |
| Carries | St135 Union ST |
| Crosses | Water Sudbury River |
| Coordinates | 42.25977, -71.45196 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 91.9 ft (28 m) |
| Max Span | 51.8 ft (15.8 m) |
| Deck Width | 47.9 ft (14.6 m) |
| Deck Area | 408.8 sq m |
| Main Spans | 1 |
| Year Built | 1900 (reconstructed 1955) |
Traffic
| Avg Daily Traffic | 11,481 (2022) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | A1400128ADOTNBI |