ST126 Concord RD over RR Mbta/Bmrr
PoorMiddlesex County, Massachusetts · 1 MI N Rt 117 & Rt 126 · Structure no. L120022N2DOT634
- Built
- 1950
- 75 years old
- Condition
- Poor
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 179 ft
- 3 main spans
- Daily traffic
- 6,853
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
ST126 Concord RD over RR Mbta/Bmrr is a steel continuous stringer/multi-beam or girder carrying ST126 Concord RD over RR Mbta/Bmrr in Middlesex County, Massachusetts. It was built in 1950, so it is 75 years old, older than the Massachusetts average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 6,853 vehicles a day, roughly 11% of them trucks, projected to reach 8,370 by 2032. The structure is 179 ft (54.6 m) long and 40 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was ST126 Concord RD over RR Mbta/Bmrr built?
It was built in 1950, making it 75 years old in 2025.
What condition is ST126 Concord RD over RR Mbta/Bmrr in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.
How much traffic does ST126 Concord RD over RR Mbta/Bmrr carry?
About 6,853 vehicles per day (2019 count), of which roughly 11% are trucks.
How long is ST126 Concord RD over RR Mbta/Bmrr?
The structure is 179 ft (54.6 m) long with a longest span of 60 ft (18.3 m) and a deck 40 ft wide.
Who owns ST126 Concord RD over RR Mbta/Bmrr?
It is owned by the State Highway Agency.