US Bridges

ST 2 Concord Tpk over RR Mbta/Bmrr

Fair

Middlesex County, Massachusetts · 2.6 KM SE of RTE 62 · Structure no. C190202DRDOTNBI

Built
1991
34 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
74 ft
1 main span
Daily traffic
55,260
2024 count
Owner
State
State Highway Agency

About this bridge

ST 2 Concord Tpk over RR Mbta/Bmrr is a prestressed concrete box beam or girders - multiple carrying ST 2 Concord Tpk over RR Mbta/Bmrr in Middlesex County, Massachusetts. It was built in 1991, so it is 34 years old, younger 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 5 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 55,260 vehicles a day, roughly 9% of them trucks, projected to reach 78,175 by 2031. The structure is 74 ft (22.6 m) long and 77 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesST 2 Concord Tpk
CrossesRR Mbta/Bmrr
Location2.6 KM SE of RTE 62
RouteState Highway 2
CountyMiddlesex County
StateMassachusetts
Coordinates42.44539, -71.35073
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating39.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length74 ft (22.6 m)
Longest span69 ft (21 m)
Deck width77 ft (23.5 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55,260 (2024)
Projected traffic78,175 by 2031
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 2 Concord Tpk over RR Mbta/Bmrr built?

It was built in 1991, making it 34 years old in 2025.

What condition is ST 2 Concord Tpk 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 November 2024.

How much traffic does ST 2 Concord Tpk over RR Mbta/Bmrr carry?

About 55,260 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is ST 2 Concord Tpk over RR Mbta/Bmrr?

The structure is 74 ft (22.6 m) long with a longest span of 69 ft (21 m) and a deck 77 ft wide.

Who owns ST 2 Concord Tpk over RR Mbta/Bmrr?

It is owned by the State Highway Agency.