US Bridges

HWY Ramp U-A/D over HWY Ramp 1A-A/D

Fair

Suffolk County, Massachusetts · 1.20 KM SE of Callahan Tu · Structure no. B165639G1MPANBI

Built
2001
24 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
511 ft
4 main spans
Daily traffic
22,300
2001 count
Owner
State
Other State Agency

About this bridge

HWY Ramp U-A/D over HWY Ramp 1A-A/D is a prestressed concrete continuous box beam or girders - multiple carrying HWY Ramp U-A/D over HWY 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 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 22,300 vehicles a day. The structure is 511 ft (155.9 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Ramp U-A/D
CrossesHWY Ramp 1A-A/D
Location1.20 KM SE of Callahan Tu
CountySuffolk County
StateMassachusetts
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.4 US tons
Inventory rating44.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckOther
Main spans4
Design loadHS 25 or greater
Structure length511 ft (155.9 m)
Longest span150 ft (45.7 m)
Deck width54 ft (16.5 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic22,300 (2001)
Projected traffic—
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Ramp U-A/D over HWY Ramp 1A-A/D built?

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

What condition is HWY Ramp U-A/D over HWY 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 U-A/D over HWY Ramp 1A-A/D carry?

About 22,300 vehicles per day (2001 count).

How long is HWY Ramp U-A/D over HWY Ramp 1A-A/D?

The structure is 511 ft (155.9 m) long with a longest span of 150 ft (45.7 m) and a deck 54 ft wide.

Who owns HWY Ramp U-A/D over HWY Ramp 1A-A/D?

It is owned by the Other State Agency.