US Bridges

I 93 Ramp K over HWY W Fourth ST

Fair

Suffolk County, Massachusetts · 0.5 M S. of I90 · Structure no. B166628TTDOTNBI

Built
2002
23 years old
Condition
Fair
inspected April 2023
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
712 ft
Daily traffic
11,717
2021 count
Owner
State
State Highway Agency

About this bridge

I 93 Ramp K over HWY W Fourth ST is a prestressed concrete continuous segmental box girder carrying I 93 Ramp K over HWY W Fourth ST 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 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 11,717 vehicles a day, roughly 7% of them trucks, projected to reach 33,401 by 2032. The structure is 712 ft (216.9 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI 93 Ramp K
CrossesHWY W Fourth ST
Location0.5 M S. of I90
CountySuffolk County
StateMassachusetts
Coordinates42.34273, -71.06147
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.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.1 US tons
Inventory rating52 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckOther
Main spans0 (+5 approach)
Design loadHS 20
Structure length712 ft (216.9 m)
Longest span152 ft (46.2 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic11,717 (2021)
Projected traffic33,401 by 2032
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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$13.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 93 Ramp K over HWY W Fourth ST built?

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

What condition is I 93 Ramp K over HWY W Fourth ST 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 I 93 Ramp K over HWY W Fourth ST carry?

About 11,717 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I 93 Ramp K over HWY W Fourth ST?

The structure is 712 ft (216.9 m) long with a longest span of 152 ft (46.2 m) and a deck 32 ft wide.

Who owns I 93 Ramp K over HWY W Fourth ST?

It is owned by the State Highway Agency.