US Bridges

ST 3 SB over Water North River

Poor

Plymouth County, Massachusetts · At Norwell Pembroke Tl · Structure no. N2400448XDOTNBI

Built
1961
64 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
196 ft
3 main spans
Daily traffic
40,879
2024 count
Owner
State
State Highway Agency

About this bridge

ST 3 SB over Water North River is a steel stringer/multi-beam or girder carrying ST 3 SB over Water North River in Plymouth County, Massachusetts. It was built in 1961, so it is 64 years old, older than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 40,879 vehicles a day, roughly 11% of them trucks, projected to reach 80,544 by 2031. The structure is 196 ft (59.7 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesST 3 SB
CrossesWater North River
LocationAt Norwell Pembroke Tl
RouteState Highway 3
Coordinates42.11593, -70.77842
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating27.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length196 ft (59.7 m)
Longest span67 ft (20.4 m)
Deck width44 ft (13.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,879 (2024)
Projected traffic80,544 by 2031
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$13.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST 3 SB over Water North River built?

It was built in 1961, making it 64 years old in 2025.

What condition is ST 3 SB over Water North River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does ST 3 SB over Water North River carry?

About 40,879 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is ST 3 SB over Water North River?

The structure is 196 ft (59.7 m) long with a longest span of 67 ft (20.4 m) and a deck 44 ft wide.

Who owns ST 3 SB over Water North River?

It is owned by the State Highway Agency.