US Bridges

Demarest Avenue over Tenakill Brook

Fair

Bergen County, New Jersey · .25 Mi. E. of CR 505 · Structure no. 020007C

Built
1995
30 years old
Condition
Fair
inspected March 2024
Type
Slab
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
1,214
2024 count
Owner
County
County Highway Agency

About this bridge

Demarest Avenue over Tenakill Brook is a prestressed concrete slab carrying Demarest Avenue over Tenakill Brook in Bergen County, New Jersey. It was built in 1995, so it is 30 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 1,214 vehicles a day, roughly 1% of them trucks, projected to reach 1,482 by 2044. The structure is 54 ft (16.5 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesDemarest Avenue
CrossesTenakill Brook
Location.25 Mi. E. of CR 505
RouteCity Street 0
CountyBergen County
StateNew Jersey
Coordinates40.97321, -73.96817
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating57 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length54 ft (16.5 m)
Longest span50 ft (15.2 m)
Deck width47 ft (14.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,214 (2024)
Projected traffic1,482 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 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 Demarest Avenue over Tenakill Brook built?

It was built in 1995, making it 30 years old in 2025.

What condition is Demarest Avenue over Tenakill 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 March 2024.

How much traffic does Demarest Avenue over Tenakill Brook carry?

About 1,214 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Demarest Avenue over Tenakill Brook?

The structure is 54 ft (16.5 m) long with a longest span of 50 ft (15.2 m) and a deck 47 ft wide.

Who owns Demarest Avenue over Tenakill Brook?

It is owned by the County Highway Agency.