US Bridges

ST 3 A/Hnck Offrp over Other Relief

Fair

Suffolk County, Massachusetts · .2 MI E of I 93 · Structure no. B163904FQDOTNBI

Built
1970
55 years old, rebuilt 2011
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
222 ft
2 main spans
Daily traffic
21,200
2019 count
Owner
State
State Highway Agency

About this bridge

ST 3 A/Hnck Offrp over Other Relief is a steel stringer/multi-beam or girder carrying ST 3 A/Hnck Offrp over Other Relief in Suffolk County, Massachusetts. It was built in 1970 and reconstructed in 2011, so it is 55 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 21,200 vehicles a day, roughly 5% of them trucks, projected to reach 33,818 by 2032. The structure is 222 ft (67.7 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesST 3 A/Hnck Offrp
CrossesOther Relief
Location.2 MI E of I 93
RouteState Highway 3A
CountySuffolk County
StateMassachusetts
Coordinates42.28276, -71.03754
Functional classUrban Other Principal Arterial

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating93.6 US tons
Inventory rating56.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length222 ft (67.7 m)
Longest span110 ft (33.5 m)
Deck width29 ft (8.7 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,200 (2019)
Projected traffic33,818 by 2032
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed3.7 mi (6 km)
TollOn a free 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$4.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 3 A/Hnck Offrp over Other Relief built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2011.

What condition is ST 3 A/Hnck Offrp over Other 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 March 2023.

How much traffic does ST 3 A/Hnck Offrp over Other Relief carry?

About 21,200 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is ST 3 A/Hnck Offrp over Other Relief?

The structure is 222 ft (67.7 m) long with a longest span of 110 ft (33.5 m) and a deck 29 ft wide.

Who owns ST 3 A/Hnck Offrp over Other Relief?

It is owned by the State Highway Agency.