US Bridges

Walton Street over Flat Rock Brook

Good

Bergen County, New Jersey · Adjacent to Nj RTE 4 · Structure no. 020015G

Built
1975
50 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
663
2024 count
Owner
County
County Highway Agency

About this bridge

Walton Street over Flat Rock Brook is a prestressed concrete box beam or girders - multiple carrying Walton Street over Flat Rock Brook in Bergen County, New Jersey. It was built in 1975, so it is 50 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 663 vehicles a day, roughly 1% of them trucks, projected to reach 809 by 2044. The structure is 38 ft (11.6 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWalton Street
CrossesFlat Rock Brook
LocationAdjacent to Nj RTE 4
RouteCity Street 0
Coordinates40.87468, -73.9729
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length38 ft (11.6 m)
Longest span36 ft (11 m)
Deck width35 ft (10.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic663 (2024)
Projected traffic809 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Walton Street over Flat Rock Brook built?

It was built in 1975, making it 50 years old in 2025.

What condition is Walton Street over Flat Rock 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 Walton Street over Flat Rock Brook carry?

About 663 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Walton Street over Flat Rock Brook?

The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m) and a deck 35 ft wide.

Who owns Walton Street over Flat Rock Brook?

It is owned by the County Highway Agency.