US Bridges

ST 3 Pilgrim HWY over RR MBTA

Fair

Plymouth County, Massachusetts · RR MP 33/885 · Structure no. K01012AGCDOTNBI

Built
1954
71 years old, rebuilt 1978
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
49 ft
1 main span
Daily traffic
89,571
2024 count
Owner
State
State Highway Agency

About this bridge

ST 3 Pilgrim HWY over RR MBTA is a steel stringer/multi-beam or girder carrying ST 3 Pilgrim HWY over RR MBTA in Plymouth County, Massachusetts. It was built in 1954 and reconstructed in 1978, so it is 71 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 89,571 vehicles a day, roughly 3% of them trucks, projected to reach 112,446 by 2031. The structure is 49 ft (15 m) long and 104 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesST 3 Pilgrim HWY
CrossesRR MBTA
LocationRR MP 33/885
RouteState Highway 3
CountyPlymouth County
StateMassachusetts
Coordinates41.99445, -70.71961
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionJune 2024
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.1 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length49 ft (15 m)
Longest span43 ft (13.1 m)
Deck width104 ft (31.6 m)
Roadway width77 ft (23.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic89,571 (2024)
Projected traffic112,446 by 2031
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST 3 Pilgrim HWY over RR MBTA built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1978.

What condition is ST 3 Pilgrim HWY over RR MBTA 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 June 2024.

How much traffic does ST 3 Pilgrim HWY over RR MBTA carry?

About 89,571 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is ST 3 Pilgrim HWY over RR MBTA?

The structure is 49 ft (15 m) long with a longest span of 43 ft (13.1 m) and a deck 104 ft wide.

Who owns ST 3 Pilgrim HWY over RR MBTA?

It is owned by the State Highway Agency.