US Bridges

I 495 NB over ST114 Winthrop Ave

Fair

Essex County, Massachusetts · .7 MI N ST28 · Structure no. L040412X4DOTNBI

Built
1962
63 years old, rebuilt 1980
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
182 ft
4 main spans
Daily traffic
111,069
2024 count
Owner
State
State Highway Agency

About this bridge

I 495 NB over ST114 Winthrop Ave is a steel stringer/multi-beam or girder carrying I 495 NB over ST114 Winthrop Ave in Essex County, Massachusetts. It was built in 1962 and reconstructed in 1980, so it is 63 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 111,069 vehicles a day, roughly 12% of them trucks, projected to reach 129,503 by 2032. The structure is 182 ft (55.5 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 495 NB
CrossesST114 Winthrop Ave
Location.7 MI N ST28
RouteInterstate 495
CountyEssex County
StateMassachusetts
Coordinates42.68611, -71.14256
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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, 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 rating63.3 US tons
Inventory rating37.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length182 ft (55.5 m)
Longest span52 ft (15.8 m)
Deck width60 ft (18.3 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic111,069 (2024)
Projected traffic129,503 by 2032
Trucks12%
Lanes on structure4
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$10 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 495 NB over ST114 Winthrop Ave built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1980.

What condition is I 495 NB over ST114 Winthrop Ave 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 NB over ST114 Winthrop Ave carry?

About 111,069 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is I 495 NB over ST114 Winthrop Ave?

The structure is 182 ft (55.5 m) long with a longest span of 52 ft (15.8 m) and a deck 60 ft wide.

Who owns I 495 NB over ST114 Winthrop Ave?

It is owned by the State Highway Agency.