US Bridges

I 93 SB over Other Parking Area

Fair

Suffolk County, Massachusetts · Unit 3 · Structure no. B166569Q7DOTNBI

Built
2000
25 years old
Condition
Fair
inspected March 2023
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
361 ft
3 main spans
Daily traffic
148,110
2019 count
Owner
State
State Highway Agency

About this bridge

I 93 SB over Other Parking Area is a prestressed concrete continuous segmental box girder carrying I 93 SB over Other Parking Area in Suffolk County, Massachusetts. It was built in 2000, so it is 25 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 148,110 vehicles a day, roughly 7% of them trucks, projected to reach 144,980 by 2032. The structure is 361 ft (110.1 m) long and 77 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 93 SB
CrossesOther Parking Area
LocationUnit 3
RouteInterstate 93
CountySuffolk County
StateMassachusetts
Coordinates42.34511, -71.06128
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckOther
Main spans3
Design loadHS 25 or greater
Structure length361 ft (110.1 m)
Longest span151 ft (45.9 m)
Deck width77 ft (23.5 m)
Roadway width75 ft (22.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic148,110 (2019)
Projected traffic144,980 by 2032
Trucks7%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$25.4 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 SB over Other Parking Area built?

It was built in 2000, making it 25 years old in 2025.

What condition is I 93 SB over Other Parking Area 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 SB over Other Parking Area carry?

About 148,110 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is I 93 SB over Other Parking Area?

The structure is 361 ft (110.1 m) long with a longest span of 151 ft (45.9 m) and a deck 77 ft wide.

Who owns I 93 SB over Other Parking Area?

It is owned by the State Highway Agency.