US Bridges

Watchung Ave CR646 over Passaic River

Good

Morris County, New Jersey · 0.9 MI SW NJ24&NJ124 JCT · Structure no. 1400515

Built
2002
23 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
85 ft
2 main spans
Daily traffic
12,029
2023 count
Owner
County
County Highway Agency

About this bridge

Watchung Ave CR646 over Passaic River is a steel continuous stringer/multi-beam or girder carrying Watchung Ave CR646 over Passaic River in Morris County, New Jersey. It was built in 2002, so it is 23 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 12,029 vehicles a day, roughly 4% of them trucks, projected to reach 14,678 by 2043. The structure is 85 ft (25.9 m) long and 58 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesWatchung Ave CR646
CrossesPassaic River
Location0.9 MI SW NJ24&NJ124 JCT
RouteCounty Highway 646
Coordinates40.7289, -74.3793
Functional classUrban Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
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 alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating94 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length85 ft (25.9 m)
Longest span40 ft (12.2 m)
Deck width58 ft (17.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,029 (2023)
Projected traffic14,678 by 2043
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Watchung Ave CR646 over Passaic River built?

It was built in 2002, making it 23 years old in 2025.

What condition is Watchung Ave CR646 over Passaic River 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 June 2023.

How much traffic does Watchung Ave CR646 over Passaic River carry?

About 12,029 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Watchung Ave CR646 over Passaic River?

The structure is 85 ft (25.9 m) long with a longest span of 40 ft (12.2 m) and a deck 58 ft wide.

Who owns Watchung Ave CR646 over Passaic River?

It is owned by the County Highway Agency.