US Bridges

Waldron Terrace over Stony Brook

Good

Rockland County, New York · JCT 87 & Seven Lakes · Structure no. 000000003364720

Built
2014
11 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
59 ft
1 main span
Daily traffic
291
2018 count
Owner
County
County Highway Agency

About this bridge

Waldron Terrace over Stony Brook is a prestressed concrete box beam or girders - multiple carrying Waldron Terrace over Stony Brook in Rockland County, New York. It was built in 2014, so it is 11 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 291 vehicles a day, roughly 5% of them trucks, projected to reach 407 by 2038. The structure is 59 ft (18 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesWaldron Terrace
CrossesStony Brook
LocationJCT 87 & Seven Lakes
Coordinates41.16249, -74.18568
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating45.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length59 ft (18 m)
Longest span56 ft (17.1 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic291 (2018)
Projected traffic407 by 2038
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$849,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Waldron Terrace over Stony Brook built?

It was built in 2014, making it 11 years old in 2025.

What condition is Waldron Terrace over Stony Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Waldron Terrace over Stony Brook carry?

About 291 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Waldron Terrace over Stony Brook?

The structure is 59 ft (18 m) long with a longest span of 56 ft (17.1 m) and a deck 31 ft wide.

Who owns Waldron Terrace over Stony Brook?

It is owned by the County Highway Agency.