US Bridges

I 93 /US1/ST3 over Other Ped/ Bike Path

Fair

Suffolk County, Massachusetts · 7.4 KM S of JCT I90&I93 · Structure no. B162523D3DOTNBI

Built
1956
69 years old, rebuilt 1984
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
48 ft
1 main span
Daily traffic
171,195
2024 count
Owner
State
State Highway Agency

About this bridge

I 93 /US1/ST3 over Other Ped/ Bike Path is a steel stringer/multi-beam or girder carrying I 93 /US1/ST3 over Other Ped/ Bike Path in Suffolk County, Massachusetts. It was built in 1956 and reconstructed in 1984, so it is 69 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 171,195 vehicles a day, roughly 7% of them trucks, projected to reach 323,756 by 2031. The structure is 48 ft (14.6 m) long and 118 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 93 /US1/ST3
CrossesOther Ped/ Bike Path
Location7.4 KM S of JCT I90&I93
RouteInterstate 93
CountySuffolk County
StateMassachusetts
Coordinates42.28309, -71.0444
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.5 US tons
Inventory rating45.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span44 ft (13.4 m)
Deck width118 ft (36 m)
Roadway width110 ft (33.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic171,195 (2024)
Projected traffic323,756 by 2031
Trucks7%
Lanes on structure8
Traffic directionTwo-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 statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 /US1/ST3 over Other Ped/ Bike Path built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1984.

What condition is I 93 /US1/ST3 over Other Ped/ Bike Path 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 2024.

How much traffic does I 93 /US1/ST3 over Other Ped/ Bike Path carry?

About 171,195 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is I 93 /US1/ST3 over Other Ped/ Bike Path?

The structure is 48 ft (14.6 m) long with a longest span of 44 ft (13.4 m) and a deck 118 ft wide.

Who owns I 93 /US1/ST3 over Other Ped/ Bike Path?

It is owned by the State Highway Agency.