US Bridges

I 495 NB over HWY Summer ST

Fair

Norfolk County, Massachusetts · MM40 .3 MI N of Wrntm Tl · Structure no. F080241VCDOTNBI

Built
1966
59 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
93 ft
1 main span
Daily traffic
41,841
2022 count
Owner
State
State Highway Agency

About this bridge

I 495 NB over HWY Summer ST is a steel stringer/multi-beam or girder carrying I 495 NB over HWY Summer ST in Norfolk County, Massachusetts. It was built in 1966, so it is 59 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 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 41,841 vehicles a day, roughly 6% of them trucks, projected to reach 60,013 by 2032. The structure is 93 ft (28.3 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI 495 NB
CrossesHWY Summer ST
LocationMM40 .3 MI N of Wrntm Tl
RouteInterstate 495
CountyNorfolk County
StateMassachusetts
Coordinates42.0584, -71.38384
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionAugust 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.8 US tons
Inventory rating33.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length93 ft (28.3 m)
Longest span88 ft (26.8 m)
Deck width54 ft (16.6 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,841 (2022)
Projected traffic60,013 by 2032
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$4.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 495 NB over HWY Summer ST built?

It was built in 1966, making it 59 years old in 2025.

What condition is I 495 NB over HWY Summer ST 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 August 2023.

How much traffic does I 495 NB over HWY Summer ST carry?

About 41,841 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is I 495 NB over HWY Summer ST?

The structure is 93 ft (28.3 m) long with a longest span of 88 ft (26.8 m) and a deck 54 ft wide.

Who owns I 495 NB over HWY Summer ST?

It is owned by the State Highway Agency.