US Bridges

I 495 SB over ST108 Newton RD

Fair

Essex County, Massachusetts · .7 MI S ST110 · Structure no. H120342WTDOTNBI

Built
1964
61 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
127 ft
3 main spans
Daily traffic
67,557
2025 count
Owner
State
State Highway Agency

About this bridge

I 495 SB over ST108 Newton RD is a steel stringer/multi-beam or girder carrying I 495 SB over ST108 Newton RD in Essex County, Massachusetts. It was built in 1964, so it is 61 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. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 67,557 vehicles a day, roughly 15% of them trucks, projected to reach 100,128 by 2032. The structure is 127 ft (38.7 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 495 SB
CrossesST108 Newton RD
Location.7 MI S ST110
RouteInterstate 495
CountyEssex County
StateMassachusetts
Coordinates42.80528, -71.06579
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.8 US tons
Inventory rating33.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length127 ft (38.7 m)
Longest span56 ft (17.1 m)
Deck width56 ft (17.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67,557 (2025)
Projected traffic100,128 by 2032
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$6.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 495 SB over ST108 Newton RD built?

It was built in 1964, making it 61 years old in 2025.

What condition is I 495 SB over ST108 Newton RD 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 I 495 SB over ST108 Newton RD carry?

About 67,557 vehicles per day (2025 count), of which roughly 15% are trucks.

How long is I 495 SB over ST108 Newton RD?

The structure is 127 ft (38.7 m) long with a longest span of 56 ft (17.1 m) and a deck 56 ft wide.

Who owns I 495 SB over ST108 Newton RD?

It is owned by the State Highway Agency.