US Bridges

I 495 SB over HWY River RD

Fair

Middlesex County, Massachusetts · @mm 65.6 · Structure no. H2501727JDOTNBI

Built
1963
62 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
141 ft
3 main spans
Daily traffic
47,879
2023 count
Owner
State
State Highway Agency

About this bridge

I 495 SB over HWY River RD is a steel stringer/multi-beam or girder carrying I 495 SB over HWY River RD in Middlesex County, Massachusetts. It was built in 1963, so it is 62 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 47,879 vehicles a day, roughly 19% of them trucks, projected to reach 78,532 by 2032. The structure is 141 ft (43 m) long and 56 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI 495 SB
CrossesHWY River RD
Location@mm 65.6
RouteInterstate 495
CountyMiddlesex County
StateMassachusetts
Coordinates42.37103, -71.59671
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length141 ft (43 m)
Longest span65 ft (19.8 m)
Deck width56 ft (17.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,879 (2023)
Projected traffic78,532 by 2032
Trucks19%
Lanes on structure3
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$7.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 495 SB over HWY River RD built?

It was built in 1963, making it 62 years old in 2025.

What condition is I 495 SB over HWY River 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 HWY River RD carry?

About 47,879 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is I 495 SB over HWY River RD?

The structure is 141 ft (43 m) long with a longest span of 65 ft (19.8 m) and a deck 56 ft wide.

Who owns I 495 SB over HWY River RD?

It is owned by the State Highway Agency.