US Bridges

I 93 SB Connector over I 93 NB

Fair

Norfolk County, Massachusetts · I 93 SB at I 93 NB · Structure no. B21029357DOTNBI

Built
1957
68 years old, rebuilt 1982
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
68,793
2023 count
Owner
State
State Highway Agency

About this bridge

I 93 SB Connector over I 93 NB is a steel stringer/multi-beam or girder carrying I 93 SB Connector over I 93 NB in Norfolk County, Massachusetts. It was built in 1957 and reconstructed in 1982, so it is 68 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 6 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 68,793 vehicles a day, roughly 7% of them trucks, projected to reach 319,966 by 2032. The structure is 72 ft (22 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 93 SB Connector
CrossesI 93 NB
LocationI 93 SB at I 93 NB
RouteInterstate 93
CountyNorfolk County
StateMassachusetts
Coordinates42.227, -71.0204
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating88.7 US tons
Inventory rating53.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length72 ft (22 m)
Longest span67 ft (20.4 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deck14 ft (4.4 m)

Traffic and service

Average daily traffic68,793 (2023)
Projected traffic319,966 by 2032
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 SB Connector over I 93 NB built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1982.

What condition is I 93 SB Connector over I 93 NB 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 June 2023.

How much traffic does I 93 SB Connector over I 93 NB carry?

About 68,793 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is I 93 SB Connector over I 93 NB?

The structure is 72 ft (22 m) long with a longest span of 67 ft (20.4 m) and a deck 47 ft wide.

Who owns I 93 SB Connector over I 93 NB?

It is owned by the State Highway Agency.