US Bridges

RTE I495 over Sills Road Sills Road

Fair

Suffolk County, New York · 3 MI E JCT SH 112 & I495 · Structure no. 000000001064151

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
237 ft
4 main spans
Daily traffic
34,937
1999 count
Owner
State
State Highway Agency

About this bridge

RTE I495 over Sills Road Sills Road is a steel stringer/multi-beam or girder carrying RTE I495 over Sills Road Sills Road in Suffolk County, New York. It was built in 1970, so it is 55 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 34,937 vehicles a day, roughly 13% of them trucks. The structure is 237 ft (72.2 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesRTE I495
CrossesSills Road Sills Road
Location3 MI E JCT SH 112 & I495
RouteInterstate 495
CountySuffolk County
StateNew York
Coordinates40.82896, -72.93849
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.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating54.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length237 ft (72.2 m)
Longest span67 ft (20.4 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,937 (1999)
Projected traffic—
Trucks13%
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$7.4 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I495 over Sills Road Sills Road built?

It was built in 1970, making it 55 years old in 2025.

What condition is RTE I495 over Sills Road Sills 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 August 2023.

How much traffic does RTE I495 over Sills Road Sills Road carry?

About 34,937 vehicles per day (1999 count), of which roughly 13% are trucks.

How long is RTE I495 over Sills Road Sills Road?

The structure is 237 ft (72.2 m) long with a longest span of 67 ft (20.4 m) and a deck 45 ft wide.

Who owns RTE I495 over Sills Road Sills Road?

It is owned by the State Highway Agency.