US Bridges

I 90 Ramp D over Other MBTA & Ramp B

Fair

Suffolk County, Massachusetts · Exit 22 Towards Stuart ST · Structure no. B16301B8HDOTNBI

Built
1981
44 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
155 ft
3 main spans
Daily traffic
19,396
2024 count
Owner
Private
Private (other than railroad)

About this bridge

I 90 Ramp D over Other MBTA & Ramp B is a steel stringer/multi-beam or girder carrying I 90 Ramp D over Other MBTA & Ramp B in Suffolk County, Massachusetts. It was built in 1981, so it is 44 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 19,396 vehicles a day, roughly 3% of them trucks. The structure is 155 ft (47.2 m) long and 34 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesI 90 Ramp D
CrossesOther MBTA & Ramp B
LocationExit 22 Towards Stuart ST
RouteInterstate 90
CountySuffolk County
StateMassachusetts
Coordinates42.34742, -71.07863
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating47.6 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span61 ft (18.5 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic19,396 (2024)
Projected traffic—
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed2.5 mi (4 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerPrivate (other than railroad)
Maintained byPrivate (other than railroad)
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$9.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 Ramp D over Other MBTA & Ramp B built?

It was built in 1981, making it 44 years old in 2025.

What condition is I 90 Ramp D over Other MBTA & Ramp B 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 2024.

How much traffic does I 90 Ramp D over Other MBTA & Ramp B carry?

About 19,396 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is I 90 Ramp D over Other MBTA & Ramp B?

The structure is 155 ft (47.2 m) long with a longest span of 61 ft (18.5 m) and a deck 34 ft wide.

Who owns I 90 Ramp D over Other MBTA & Ramp B?

It is owned by the Private (other than railroad).