US Bridges

I 495 NB over RR CSX

Fair

Norfolk County, Massachusetts · .8 MI N of King ST · Structure no. F080211V9DOTNBI

Built
1966
59 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
112 ft
3 main spans
Daily traffic
67,829
2020 count
Owner
State
State Highway Agency

About this bridge

I 495 NB over RR CSX is a steel stringer/multi-beam or girder carrying I 495 NB over RR CSX 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 67,829 vehicles a day, roughly 6% of them trucks, projected to reach 109,603 by 2032. The structure is 112 ft (34.1 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 495 NB
CrossesRR CSX
Location.8 MI N of King ST
RouteInterstate 495
CountyNorfolk County
StateMassachusetts
Coordinates42.07269, -71.41213
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length112 ft (34.1 m)
Longest span38 ft (11.6 m)
Deck width55 ft (16.7 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic67,829 (2020)
Projected traffic109,603 by 2032
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 RR CSX built?

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

What condition is I 495 NB over RR CSX 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 2023.

How much traffic does I 495 NB over RR CSX carry?

About 67,829 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is I 495 NB over RR CSX?

The structure is 112 ft (34.1 m) long with a longest span of 38 ft (11.6 m) and a deck 55 ft wide.

Who owns I 495 NB over RR CSX?

It is owned by the State Highway Agency.