US Bridges

HWY Summer ST over Water Shawsheen River

Fair

Middlesex County, Massachusetts · 2.5 MI E of South RD · Structure no. B040172B8MUNNBI

Built
1959
66 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
5,820
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

HWY Summer ST over Water Shawsheen River is a prestressed concrete box beam or girders - multiple carrying HWY Summer ST over Water Shawsheen River in Middlesex County, Massachusetts. It was built in 1959, so it is 66 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.

It carries about 5,820 vehicles a day, roughly 11% of them trucks, projected to reach 8,054 by 2033. The structure is 28 ft (8.5 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesHWY Summer ST
CrossesWater Shawsheen River
Location2.5 MI E of South RD
RouteCity Street 0
Coordinates42.47374, -71.26399
Functional classUrban Collector

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.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 6 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79.9 US tons
Inventory rating79.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width44 ft (13.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,820 (2024)
Projected traffic8,054 by 2033
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$1.2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY Summer ST over Water Shawsheen River built?

It was built in 1959, making it 66 years old in 2025.

What condition is HWY Summer ST over Water Shawsheen River 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 February 2024.

How much traffic does HWY Summer ST over Water Shawsheen River carry?

About 5,820 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is HWY Summer ST over Water Shawsheen River?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 44 ft wide.

Who owns HWY Summer ST over Water Shawsheen River?

It is owned by the Town or Township Highway Agency.