US Bridges

I 90 WB Ramp Off over RR MBTA

Fair

Suffolk County, Massachusetts · .1 MI S. Charles Rv S111 · Structure no. B163584RWDOTNBI

Built
1965
60 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
315 ft
4 main spans
Daily traffic
17,948
2021 count
Owner
State
State Highway Agency

About this bridge

I 90 WB Ramp Off over RR MBTA is a steel stringer/multi-beam or girder carrying I 90 WB Ramp Off over RR MBTA in Suffolk County, Massachusetts. It was built in 1965, so it is 60 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 17,948 vehicles a day, roughly 5% of them trucks, projected to reach 175 by 2032. The structure is 315 ft (96.1 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI 90 WB Ramp Off
CrossesRR MBTA
Location.1 MI S. Charles Rv S111
RouteInterstate 90
CountySuffolk County
StateMassachusetts
Coordinates42.35616, -71.11875
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.6 US tons
Inventory rating33.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length315 ft (96.1 m)
Longest span85 ft (25.9 m)
Deck width48 ft (14.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,948 (2021)
Projected traffic175 by 2032
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$13.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 WB Ramp Off over RR MBTA built?

It was built in 1965, making it 60 years old in 2025.

What condition is I 90 WB Ramp Off over RR MBTA 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 2025.

How much traffic does I 90 WB Ramp Off over RR MBTA carry?

About 17,948 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is I 90 WB Ramp Off over RR MBTA?

The structure is 315 ft (96.1 m) long with a longest span of 85 ft (25.9 m) and a deck 48 ft wide.

Who owns I 90 WB Ramp Off over RR MBTA?

It is owned by the State Highway Agency.