US Bridges

HWY S Bos Bps RD over I 93

Fair

Suffolk County, Massachusetts · Mass Ave. Int. · Structure no. B1664392ADOTNBI

Built
1998
27 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
191 ft
2 main spans
Daily traffic
12,413
2023 count
Owner
State
State Highway Agency

About this bridge

HWY S Bos Bps RD over I 93 is a steel continuous box beam or girders - multiple carrying HWY S Bos Bps RD over I 93 in Suffolk County, Massachusetts. It was built in 1998, so it is 27 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 12,413 vehicles a day, roughly 25% of them trucks, projected to reach 11,055 by 2032. The structure is 191 ft (58.2 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY S Bos Bps RD
CrossesI 93
LocationMass Ave. Int.
RouteInterstate 930
CountySuffolk County
StateMassachusetts
Coordinates42.33384, -71.06421
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating72.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length191 ft (58.2 m)
Longest span106 ft (32.3 m)
Deck width72 ft (21.9 m)
Roadway width63 ft (19.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,413 (2023)
Projected traffic11,055 by 2032
Trucks25%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$12.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY S Bos Bps RD over I 93 built?

It was built in 1998, making it 27 years old in 2025.

What condition is HWY S Bos Bps RD over I 93 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 HWY S Bos Bps RD over I 93 carry?

About 12,413 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is HWY S Bos Bps RD over I 93?

The structure is 191 ft (58.2 m) long with a longest span of 106 ft (32.3 m) and a deck 72 ft wide.

Who owns HWY S Bos Bps RD over I 93?

It is owned by the State Highway Agency.