US Bridges

Seven Lakes Drive over Stony Brook

Fair

Rockland County, New York · At Sloatsburg · Structure no. 000000003364790

Built
1953
72 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
2,232
2018 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Seven Lakes Drive over Stony Brook is a steel stringer/multi-beam or girder carrying Seven Lakes Drive over Stony Brook in Rockland County, New York. It was built in 1953, so it is 72 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 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 2,232 vehicles a day, roughly 5% of them trucks, projected to reach 2,711 by 2041. The structure is 73 ft (22.3 m) long and 50 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesSeven Lakes Drive
CrossesStony Brook
LocationAt Sloatsburg
CountyRockland County
StateNew York
Coordinates41.16396, -74.18356
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating68 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length73 ft (22.3 m)
Longest span67 ft (20.4 m)
Deck width50 ft (15.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,232 (2018)
Projected traffic2,711 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Seven Lakes Drive over Stony Brook built?

It was built in 1953, making it 72 years old in 2025.

What condition is Seven Lakes Drive over Stony Brook 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 April 2023.

How much traffic does Seven Lakes Drive over Stony Brook carry?

About 2,232 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Seven Lakes Drive over Stony Brook?

The structure is 73 ft (22.3 m) long with a longest span of 67 ft (20.4 m) and a deck 50 ft wide.

Who owns Seven Lakes Drive over Stony Brook?

It is owned by the State Park, Forest, or Reservation Agency.