US Bridges

HWY Summer ST over HWY C ST

Good

Suffolk County, Massachusetts · 0.16 KM SW of Twt · Structure no. B1658290YDOTNBI

Built
2000
25 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
111 ft
1 main span
Daily traffic
20,043
2023 count
Owner
State
State Highway Agency

About this bridge

HWY Summer ST over HWY C ST is a prestressed concrete box beam or girders - multiple carrying HWY Summer ST over HWY C ST in Suffolk County, Massachusetts. It was built in 2000, so it is 25 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 20,043 vehicles a day, roughly 8% of them trucks, projected to reach 19,923 by 2032. The structure is 111 ft (33.9 m) long and 96 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHWY Summer ST
CrossesHWY C ST
Location0.16 KM SW of Twt
RouteCity Street 0
CountySuffolk County
StateMassachusetts
Coordinates42.34717, -71.04376
Functional classUrban Other Principal 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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating37.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length111 ft (33.9 m)
Longest span103 ft (31.3 m)
Deck width96 ft (29.2 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,043 (2023)
Projected traffic19,923 by 2032
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was HWY Summer ST over HWY C ST built?

It was built in 2000, making it 25 years old in 2025.

What condition is HWY Summer ST over HWY C ST 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 September 2023.

How much traffic does HWY Summer ST over HWY C ST carry?

About 20,043 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is HWY Summer ST over HWY C ST?

The structure is 111 ft (33.9 m) long with a longest span of 103 ft (31.3 m) and a deck 96 ft wide.

Who owns HWY Summer ST over HWY C ST?

It is owned by the State Highway Agency.