US Bridges

HWY Cooper ST over RR Mbta/Bmrr

Good

Middlesex County, Massachusetts · Just Off Myrtle Ave · Structure no. W010042P2DOT634

Built
1919
106 years old, rebuilt 1997
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
2,069
2019 count
Owner
State
State Highway Agency

About this bridge

HWY Cooper ST over RR Mbta/Bmrr is a prestressed concrete box beam or girders - multiple carrying HWY Cooper ST over RR Mbta/Bmrr in Middlesex County, Massachusetts. It was built in 1919 and reconstructed in 1997, so it is 106 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,069 vehicles a day, roughly 6% of them trucks, projected to reach 2,211 by 2032. The structure is 71 ft (21.6 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Cooper ST
CrossesRR Mbta/Bmrr
LocationJust Off Myrtle Ave
RouteCity Street 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.47772, -71.06551
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating89.3 US tons
Inventory rating39.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length71 ft (21.6 m)
Longest span66 ft (20 m)
Deck width31 ft (9.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,069 (2019)
Projected traffic2,211 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$3.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Cooper ST over RR Mbta/Bmrr built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1997.

What condition is HWY Cooper ST over RR Mbta/Bmrr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does HWY Cooper ST over RR Mbta/Bmrr carry?

About 2,069 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is HWY Cooper ST over RR Mbta/Bmrr?

The structure is 71 ft (21.6 m) long with a longest span of 66 ft (20 m) and a deck 31 ft wide.

Who owns HWY Cooper ST over RR Mbta/Bmrr?

It is owned by the State Highway Agency.