US Bridges

HWY Ponkapoag TR over I 93 /US1

Fair

Norfolk County, Massachusetts · .8 KM E of Canton T.L. · Structure no. M250282MKDOTNBI

Built
1958
67 years old, rebuilt 2011
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
303 ft
4 main spans
Daily traffic
10,300
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Ponkapoag TR over I 93 /US1 is a steel continuous stringer/multi-beam or girder carrying HWY Ponkapoag TR over I 93 /US1 in Norfolk County, Massachusetts. It was built in 1958 and reconstructed in 2011, so it is 67 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 10,300 vehicles a day, roughly 5% of them trucks, projected to reach 11,371 by 2032. The structure is 303 ft (92.3 m) long and 51 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesHWY Ponkapoag TR
CrossesI 93 /US1
Location.8 KM E of Canton T.L.
RouteCity Street 0
CountyNorfolk County
StateMassachusetts
Coordinates42.20304, -71.09624
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.1 US tons
Inventory rating43.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length303 ft (92.3 m)
Longest span106 ft (32.3 m)
Deck width51 ft (15.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,300 (2023)
Projected traffic11,371 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed2.5 mi (4 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$13.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Ponkapoag TR over I 93 /US1 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2011.

What condition is HWY Ponkapoag TR over I 93 /US1 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 HWY Ponkapoag TR over I 93 /US1 carry?

About 10,300 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is HWY Ponkapoag TR over I 93 /US1?

The structure is 303 ft (92.3 m) long with a longest span of 106 ft (32.3 m) and a deck 51 ft wide.

Who owns HWY Ponkapoag TR over I 93 /US1?

It is owned by the State Highway Agency.