US Bridges

I 95 NB over Water Neponset River

Fair

Norfolk County, Massachusetts · N. of Neponset ST/95 · Structure no. N250313R3DOTNBI

Built
1963
62 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
128 ft
3 main spans
Daily traffic
56,887
2022 count
Owner
State
State Highway Agency

About this bridge

I 95 NB over Water Neponset River is a steel stringer/multi-beam or girder carrying I 95 NB over Water Neponset River in Norfolk County, Massachusetts. It was built in 1963, so it is 62 years old, younger 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 56,887 vehicles a day, roughly 6% of them trucks, projected to reach 80,228 by 2032. The structure is 128 ft (39 m) long and 58 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesI 95 NB
CrossesWater Neponset River
LocationN. of Neponset ST/95
RouteInterstate 95
CountyNorfolk County
StateMassachusetts
Coordinates42.17543, -71.16673
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating50.4 US tons
Inventory rating30.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39 m)
Longest span63 ft (19.2 m)
Deck width58 ft (17.7 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56,887 (2022)
Projected traffic80,228 by 2032
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$6.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 95 NB over Water Neponset River built?

It was built in 1963, making it 62 years old in 2025.

What condition is I 95 NB over Water Neponset 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 October 2023.

How much traffic does I 95 NB over Water Neponset River carry?

About 56,887 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is I 95 NB over Water Neponset River?

The structure is 128 ft (39 m) long with a longest span of 63 ft (19.2 m) and a deck 58 ft wide.

Who owns I 95 NB over Water Neponset River?

It is owned by the State Highway Agency.