US Bridges

HWY Trapelo RD over RR Mbta/Bmrr

FairPosted for load

Middlesex County, Massachusetts · Waverly Sq near ST 60 · Structure no. B070042MPDOT634

Built
1952
73 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
69 ft
1 main span
Daily traffic
14,900
2019 count
Owner
State
State Highway Agency

About this bridge

HWY Trapelo RD over RR Mbta/Bmrr is a steel stringer/multi-beam or girder carrying HWY Trapelo RD over RR Mbta/Bmrr in Middlesex County, Massachusetts. It was built in 1952, so it is 73 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 14,900 vehicles a day, roughly 9% of them trucks, projected to reach 42,641 by 2031. The structure is 69 ft (21 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Trapelo RD
CrossesRR Mbta/Bmrr
LocationWaverly Sq near ST 60
RouteState Highway 0
CountyMiddlesex County
StateMassachusetts
Coordinates42.38774, -71.19051
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating43.5 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length69 ft (21 m)
Longest span65 ft (19.8 m)
Deck width76 ft (23.2 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,900 (2019)
Projected traffic42,641 by 2031
Trucks9%
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Trapelo RD over RR Mbta/Bmrr built?

It was built in 1952, making it 73 years old in 2025.

What condition is HWY Trapelo RD 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 October 2023.

How much traffic does HWY Trapelo RD over RR Mbta/Bmrr carry?

About 14,900 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is HWY Trapelo RD over RR Mbta/Bmrr?

The structure is 69 ft (21 m) long with a longest span of 65 ft (19.8 m) and a deck 76 ft wide.

Who owns HWY Trapelo RD over RR Mbta/Bmrr?

It is owned by the State Highway Agency.