US Bridges

ST 2 A/Mass Ave over RR Mbta/Bmrr

Fair

Middlesex County, Massachusetts · .8 KM SE of JCT SR2A&16 · Structure no. C010123FUDOT634

Built
1899
126 years old, rebuilt 1986
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
2 main spans
Daily traffic
22,200
2024 count
Owner
State
State Highway Agency

About this bridge

ST 2 A/Mass Ave over RR Mbta/Bmrr is a steel stringer/multi-beam or girder carrying ST 2 A/Mass Ave over RR Mbta/Bmrr in Middlesex County, Massachusetts. It was built in 1899 and reconstructed in 1986, so it is 126 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 22,200 vehicles a day, roughly 7% of them trucks, projected to reach 47,853 by 2031. The structure is 37 ft (11.4 m) long and 94 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST 2 A/Mass Ave
CrossesRR Mbta/Bmrr
Location.8 KM SE of JCT SR2A&16
RouteState Highway 2A
CountyMiddlesex County
StateMassachusetts
Coordinates42.38838, -71.11949
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating35.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span32 ft (9.9 m)
Deck width94 ft (28.7 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,200 (2024)
Projected traffic47,853 by 2031
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 2 A/Mass Ave over RR Mbta/Bmrr built?

It was built in 1899, making it 126 years old in 2025. It was reconstructed in 1986.

What condition is ST 2 A/Mass Ave over RR Mbta/Bmrr in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does ST 2 A/Mass Ave over RR Mbta/Bmrr carry?

About 22,200 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is ST 2 A/Mass Ave over RR Mbta/Bmrr?

The structure is 37 ft (11.4 m) long with a longest span of 32 ft (9.9 m) and a deck 94 ft wide.

Who owns ST 2 A/Mass Ave over RR Mbta/Bmrr?

It is owned by the State Highway Agency.