US Bridges

Stonetown Road over Monksvl Dam/Wanaque Rsvr

Fair

Passaic County, New Jersey · 0.22 MI South of CR 511 · Structure no. 5500001

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
207 ft
2 main spans
Daily traffic
1,360
2023 count
Owner
Private
Private (other than railroad)

About this bridge

Stonetown Road over Monksvl Dam/Wanaque Rsvr is a concrete box beam or girders - multiple carrying Stonetown Road over Monksvl Dam/Wanaque Rsvr in Passaic County, New Jersey. It was built in 1987, so it is 38 years old, younger than the New Jersey average of 58.5 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 1,360 vehicles a day, roughly 3% of them trucks, projected to reach 1,660 by 2043. The structure is 207 ft (63.1 m) long and 36 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesStonetown Road
CrossesMonksvl Dam/Wanaque Rsvr
Location0.22 MI South of CR 511
RouteCity Street 0
CountyPassaic County
StateNew Jersey
Coordinates41.12211, -74.29668
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length207 ft (63.1 m)
Longest span100 ft (30.5 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,360 (2023)
Projected traffic1,660 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerPrivate (other than railroad)
Maintained byPrivate (other than railroad)
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stonetown Road over Monksvl Dam/Wanaque Rsvr built?

It was built in 1987, making it 38 years old in 2025.

What condition is Stonetown Road over Monksvl Dam/Wanaque Rsvr 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 October 2023.

How much traffic does Stonetown Road over Monksvl Dam/Wanaque Rsvr carry?

About 1,360 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Stonetown Road over Monksvl Dam/Wanaque Rsvr?

The structure is 207 ft (63.1 m) long with a longest span of 100 ft (30.5 m) and a deck 36 ft wide.

Who owns Stonetown Road over Monksvl Dam/Wanaque Rsvr?

It is owned by the Private (other than railroad).