US Bridges

I 93 NB over HWY Broadway

Fair

Suffolk County, Massachusetts · .2 M N of I90 EB · Structure no. B166618QYDOTNBI

Built
2002
23 years old
Condition
Fair
inspected March 2023
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
667 ft
5 main spans
Daily traffic
127,241
2017 count
Owner
State
State Highway Agency

About this bridge

I 93 NB over HWY Broadway is a prestressed concrete continuous segmental box girder carrying I 93 NB over HWY Broadway in Suffolk County, Massachusetts. It was built in 2002, so it is 23 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 127,241 vehicles a day, roughly 2% of them trucks, projected to reach 93,147 by 2032. The structure is 667 ft (203.2 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI 93 NB
CrossesHWY Broadway
Location.2 M N of I90 EB
RouteInterstate 93
CountySuffolk County
StateMassachusetts
Coordinates42.34384, -71.06119
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.1 US tons
Inventory rating44.6 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckOther
Main spans5
Design loadHS 25 or greater
Structure length667 ft (203.2 m)
Longest span154 ft (46.9 m)
Deck width51 ft (15.6 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deck14 ft (4.4 m)

Traffic and service

Average daily traffic127,241 (2017)
Projected traffic93,147 by 2032
Trucks2%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$31 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 NB over HWY Broadway built?

It was built in 2002, making it 23 years old in 2025.

What condition is I 93 NB over HWY Broadway 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 March 2023.

How much traffic does I 93 NB over HWY Broadway carry?

About 127,241 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is I 93 NB over HWY Broadway?

The structure is 667 ft (203.2 m) long with a longest span of 154 ft (46.9 m) and a deck 51 ft wide.

Who owns I 93 NB over HWY Broadway?

It is owned by the State Highway Agency.