US Bridges

HWY Summer ST over RR Mbta/Csx

Good

Plymouth County, Massachusetts · .2 MI W of Flagg ST · Structure no. B230174C9DOT634

Built
1984
41 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
1,940
2025 count
Owner
State
State Highway Agency

About this bridge

HWY Summer ST over RR Mbta/Csx is a steel stringer/multi-beam or girder carrying HWY Summer ST over RR Mbta/Csx in Plymouth County, Massachusetts. It was built in 1984, so it is 41 years old, younger than the Massachusetts average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,940 vehicles a day, projected to reach 3,790 by 2032. The structure is 75 ft (22.9 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Summer ST
CrossesRR Mbta/Csx
Location.2 MI W of Flagg ST
RouteCity Street 0
CountyPlymouth County
StateMassachusetts
Coordinates41.97324, -70.95756
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating106.9 US tons
Inventory rating64 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span72 ft (21.9 m)
Deck width40 ft (12.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,940 (2025)
Projected traffic3,790 by 2032
Trucks0%
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$1.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

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

It was built in 1984, making it 41 years old in 2025.

What condition is HWY Summer ST over RR Mbta/Csx in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

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

About 1,940 vehicles per day (2025 count).

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

The structure is 75 ft (22.9 m) long with a longest span of 72 ft (21.9 m) and a deck 40 ft wide.

Who owns HWY Summer ST over RR Mbta/Csx?

It is owned by the State Highway Agency.