US Bridges

HWY Ramp T-A/D over HWY Relief

Fair

Suffolk County, Massachusetts · 1.20 KM SE of Callahan Tu · Structure no. B16558A8UMPANBI

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

About this bridge

HWY Ramp T-A/D over HWY Relief is a prestressed concrete continuous box beam or girders - single or spread carrying HWY Ramp T-A/D over HWY Relief 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 14,400 vehicles a day. The structure is 356 ft (108.6 m) long and 48 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesHWY Ramp T-A/D
CrossesHWY Relief
Location1.20 KM SE of Callahan Tu
Coordinates42.36944, -71.02778
Functional classRural Minor Collector

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.2 US tons
Inventory rating54.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckOther
Main spans3
Design loadHS 25 or greater
Structure length356 ft (108.6 m)
Longest span161 ft (49.1 m)
Deck width48 ft (14.6 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deck16 ft (4.9 m)

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 statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Ramp T-A/D over HWY Relief built?

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

What condition is HWY Ramp T-A/D over HWY Relief 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 HWY Relief carry?

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

How long is HWY Ramp T-A/D over HWY Relief?

The structure is 356 ft (108.6 m) long with a longest span of 161 ft (49.1 m) and a deck 48 ft wide.

Who owns HWY Ramp T-A/D over HWY Relief?

It is owned by the Other State Agency.