US Bridges

HWY Mass Ave over I 93

Fair

Suffolk County, Massachusetts · Mass Ave. Int. · Structure no. B16660919DOTNBI

Built
2000
25 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
292 ft
3 main spans
Daily traffic
40,100
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Mass Ave over I 93 is a steel continuous box beam or girders - multiple carrying HWY Mass Ave over I 93 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 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 40,100 vehicles a day, roughly 10% of them trucks, projected to reach 65,541 by 2032. The structure is 292 ft (88.9 m) long and 79 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHWY Mass Ave
CrossesI 93
LocationMass Ave. Int.
RouteInterstate 930
CountySuffolk County
StateMassachusetts
Coordinates42.33539, -71.06542
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.1 US tons
Inventory rating43.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length292 ft (88.9 m)
Longest span143 ft (43.7 m)
Deck width79 ft (24 m)
Roadway width63 ft (19.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,100 (2023)
Projected traffic65,541 by 2032
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Mass Ave over I 93 built?

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

What condition is HWY Mass Ave 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 April 2023.

How much traffic does HWY Mass Ave over I 93 carry?

About 40,100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is HWY Mass Ave over I 93?

The structure is 292 ft (88.9 m) long with a longest span of 143 ft (43.7 m) and a deck 79 ft wide.

Who owns HWY Mass Ave over I 93?

It is owned by the State Highway Agency.