US Bridges

ST 3 A/Main ST over Water Town Brook

Fair

Plymouth County, Massachusetts · .5 M S of RTE 44 · Structure no. P1300146WDOTNBI

Built
1908
117 years old, rebuilt 1919
Condition
Fair
inspected January 2024
Type
Arch - Deck
Concrete
Length
44 ft
1 main span
Daily traffic
8,357
2024 count
Owner
State
State Highway Agency

About this bridge

ST 3 A/Main ST over Water Town Brook is a concrete arch - deck carrying ST 3 A/Main ST over Water Town Brook in Plymouth County, Massachusetts. It was built in 1908 and reconstructed in 1919, so it is 117 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 8,357 vehicles a day, roughly 7% of them trucks, projected to reach 36,324 by 2033. The structure is 44 ft (13.5 m) long and 61 ft wide.

Location

Open in Google Maps
CarriesST 3 A/Main ST
CrossesWater Town Brook
Location.5 M S of RTE 44
RouteState Highway 3A
CountyPlymouth County
StateMassachusetts
Coordinates41.95499, -70.66298
Functional classUrban Minor 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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating48.5 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length44 ft (13.5 m)
Longest span43 ft (13 m)
Deck width61 ft (18.6 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,357 (2024)
Projected traffic36,324 by 2033
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 3 A/Main ST over Water Town Brook built?

It was built in 1908, making it 117 years old in 2025. It was reconstructed in 1919.

What condition is ST 3 A/Main ST over Water Town Brook 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 January 2024.

How much traffic does ST 3 A/Main ST over Water Town Brook carry?

About 8,357 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is ST 3 A/Main ST over Water Town Brook?

The structure is 44 ft (13.5 m) long with a longest span of 43 ft (13 m) and a deck 61 ft wide.

Who owns ST 3 A/Main ST over Water Town Brook?

It is owned by the State Highway Agency.