US Bridges

HWY Plain ST over RR Mbta/Csx

Fair

Plymouth County, Massachusetts · .25 MI E of RTE 28 · Structure no. B250184CGDOT634

Built
1987
38 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
9,181
2025 count
Owner
State
State Highway Agency

About this bridge

HWY Plain ST over RR Mbta/Csx is a steel stringer/multi-beam or girder carrying HWY Plain ST over RR Mbta/Csx in Plymouth County, Massachusetts. It was built in 1987, so it is 38 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 9,181 vehicles a day, roughly 14% of them trucks, projected to reach 17,372 by 2032. The structure is 80 ft (24.4 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Plain ST
CrossesRR Mbta/Csx
Location.25 MI E of RTE 28
RouteCity Street 0
CountyPlymouth County
StateMassachusetts
Coordinates42.05838, -71.00861
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.4 US tons
Inventory rating49.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span78 ft (23.8 m)
Deck width53 ft (16.1 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,181 (2025)
Projected traffic17,372 by 2032
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$586,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Plain ST over RR Mbta/Csx built?

It was built in 1987, making it 38 years old in 2025.

What condition is HWY Plain ST over RR Mbta/Csx 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 January 2025.

How much traffic does HWY Plain ST over RR Mbta/Csx carry?

About 9,181 vehicles per day (2025 count), of which roughly 14% are trucks.

How long is HWY Plain ST over RR Mbta/Csx?

The structure is 80 ft (24.4 m) long with a longest span of 78 ft (23.8 m) and a deck 53 ft wide.

Who owns HWY Plain ST over RR Mbta/Csx?

It is owned by the State Highway Agency.