US Bridges

I 495 NB over HWY Beacon ST

Fair

Essex County, Massachusetts · 1.4 MI N I93 · Structure no. A090342XTDOTNBI

Built
1962
63 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
110 ft
3 main spans
Daily traffic
61,119
2024 count
Owner
State
State Highway Agency

About this bridge

I 495 NB over HWY Beacon ST is a steel stringer/multi-beam or girder carrying I 495 NB over HWY Beacon ST in Essex County, Massachusetts. It was built in 1962, 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 61,119 vehicles a day, roughly 10% of them trucks, projected to reach 153,508 by 2033. The structure is 110 ft (33.5 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 NB
CrossesHWY Beacon ST
Location1.4 MI N I93
RouteInterstate 495
CountyEssex County
StateMassachusetts
Coordinates42.67479, -71.1722
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.3 US tons
Inventory rating37.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length110 ft (33.5 m)
Longest span50 ft (15.2 m)
Deck width56 ft (17.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61,119 (2024)
Projected traffic153,508 by 2033
Trucks10%
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$5.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 495 NB over HWY Beacon ST built?

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

What condition is I 495 NB over HWY Beacon 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 February 2024.

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

About 61,119 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is I 495 NB over HWY Beacon ST?

The structure is 110 ft (33.5 m) long with a longest span of 50 ft (15.2 m) and a deck 56 ft wide.

Who owns I 495 NB over HWY Beacon ST?

It is owned by the State Highway Agency.