US Bridges

ST 1 A/Main ST over HWY Prison Access RD

Fair

Norfolk County, Massachusetts · .6 MI SW of Winter ST · Structure no. W030303M8DOTNBI

Built
1952
73 years old
Condition
Fair
inspected February 2025
Type
Frame
Concrete
Length
23 ft
1 main span
Daily traffic
9,857
2025 count
Owner
State
State Highway Agency

About this bridge

ST 1 A/Main ST over HWY Prison Access RD is a concrete frame carrying ST 1 A/Main ST over HWY Prison Access RD in Norfolk County, Massachusetts. It was built in 1952, so it is 73 years old, older 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 9,857 vehicles a day, roughly 5% of them trucks, projected to reach 26,216 by 2032. The structure is 23 ft (6.9 m) long and 53 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesST 1 A/Main ST
CrossesHWY Prison Access RD
Location.6 MI SW of Winter ST
RouteState Highway 1A
CountyNorfolk County
StateMassachusetts
Coordinates42.10563, -71.28696
Functional classUrban Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating43.2 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length23 ft (6.9 m)
Longest span20 ft (6.1 m)
Deck width53 ft (16.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,857 (2025)
Projected traffic26,216 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 1 A/Main ST over HWY Prison Access RD built?

It was built in 1952, making it 73 years old in 2025.

What condition is ST 1 A/Main ST over HWY Prison Access RD 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 February 2025.

How much traffic does ST 1 A/Main ST over HWY Prison Access RD carry?

About 9,857 vehicles per day (2025 count), of which roughly 5% are trucks.

How long is ST 1 A/Main ST over HWY Prison Access RD?

The structure is 23 ft (6.9 m) long with a longest span of 20 ft (6.1 m) and a deck 53 ft wide.

Who owns ST 1 A/Main ST over HWY Prison Access RD?

It is owned by the State Highway Agency.