US Bridges

RTE I495 over Commack Road

Fair

Suffolk County, New York · 2.5 MI E JCT Rts 231+495 · Structure no. 000000001049362

Built
1963
62 years old, rebuilt 1992
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
135 ft
3 main spans
Daily traffic
77,466
2018 count
Owner
State
State Highway Agency

About this bridge

RTE I495 over Commack Road is a steel stringer/multi-beam or girder carrying RTE I495 over Commack Road in Suffolk County, New York. It was built in 1963 and reconstructed in 1992, so it is 62 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 77,466 vehicles a day, roughly 10% of them trucks, projected to reach 81,339 by 2041. The structure is 135 ft (41.1 m) long and 99 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesRTE I495
CrossesCommack Road
Location2.5 MI E JCT Rts 231+495
RouteInterstate 495
CountySuffolk County
StateNew York
Coordinates40.80448, -73.29464
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length135 ft (41.1 m)
Longest span71 ft (21.6 m)
Deck width99 ft (30.1 m)
Roadway width95 ft (29.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77,466 (2018)
Projected traffic81,339 by 2041
Trucks10%
Lanes on structure5
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$9.4 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I495 over Commack Road built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1992.

What condition is RTE I495 over Commack Road 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 December 2024.

How much traffic does RTE I495 over Commack Road carry?

About 77,466 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is RTE I495 over Commack Road?

The structure is 135 ft (41.1 m) long with a longest span of 71 ft (21.6 m) and a deck 99 ft wide.

Who owns RTE I495 over Commack Road?

It is owned by the State Highway Agency.