US Bridges

HWY Ramp T-A/D over I 90 & Ramp 1A-A/D

Fair

Suffolk County, Massachusetts · 1.20 KM SE of Callahan Tu · Structure no. B165589GLMPANBI

Built
2001
24 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
470 ft
3 main spans
Daily traffic
14,400
2001 count
Owner
State
Other State Agency

About this bridge

HWY Ramp T-A/D over I 90 & Ramp 1A-A/D is a prestressed concrete continuous box beam or girders - single or spread carrying HWY Ramp T-A/D over I 90 & Ramp 1A-A/D in Suffolk County, Massachusetts. It was built in 2001, so it is 24 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 14,400 vehicles a day. The structure is 470 ft (143.2 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesHWY Ramp T-A/D
CrossesI 90 & Ramp 1A-A/D
Location1.20 KM SE of Callahan Tu
Coordinates42.36944, -71.02778
Functional classUrban Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.4 US tons
Inventory rating45.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckOther
Main spans3
Design loadHS 25 or greater
Structure length470 ft (143.2 m)
Longest span190 ft (57.8 m)
Deck width54 ft (16.4 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,400 (2001)
Projected traffic—
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$23 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Ramp T-A/D over I 90 & Ramp 1A-A/D built?

It was built in 2001, making it 24 years old in 2025.

What condition is HWY Ramp T-A/D over I 90 & Ramp 1A-A/D 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 September 2023.

How much traffic does HWY Ramp T-A/D over I 90 & Ramp 1A-A/D carry?

About 14,400 vehicles per day (2001 count).

How long is HWY Ramp T-A/D over I 90 & Ramp 1A-A/D?

The structure is 470 ft (143.2 m) long with a longest span of 190 ft (57.8 m) and a deck 54 ft wide.

Who owns HWY Ramp T-A/D over I 90 & Ramp 1A-A/D?

It is owned by the Other State Agency.