US Bridges

I 93 Ramp X over HWY W Fourth ST

Fair

Suffolk County, Massachusetts · I93/I90 Interchange · Structure no. B166589RNDOTNBI

Built
2004
21 years old
Condition
Fair
inspected January 2022
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
565 ft
4 main spans
Daily traffic
2,470
2019 count
Owner
State
State Highway Agency

About this bridge

I 93 Ramp X over HWY W Fourth ST is a prestressed concrete continuous segmental box girder carrying I 93 Ramp X over HWY W Fourth ST in Suffolk County, Massachusetts. It was built in 2004, so it is 21 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 2,470 vehicles a day, roughly 5% of them trucks, projected to reach 1,579 by 2031. The structure is 565 ft (172.2 m) long and 24 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI 93 Ramp X
CrossesHWY W Fourth ST
LocationI93/I90 Interchange
RouteInterstate 93
CountySuffolk County
StateMassachusetts
Coordinates42.34296, -71.06201
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 inspectionJanuary 2022
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 rating110.1 US tons
Inventory rating66.8 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckOther
Main spans4
Design loadHS 25 or greater
Structure length565 ft (172.2 m)
Longest span151 ft (46.1 m)
Deck width24 ft (7.2 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,470 (2019)
Projected traffic1,579 by 2031
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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$6.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

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

It was built in 2004, making it 21 years old in 2025.

What condition is I 93 Ramp X 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 January 2022.

How much traffic does I 93 Ramp X over HWY W Fourth ST carry?

About 2,470 vehicles per day (2019 count), of which roughly 5% are trucks.

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

The structure is 565 ft (172.2 m) long with a longest span of 151 ft (46.1 m) and a deck 24 ft wide.

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

It is owned by the State Highway Agency.