US Bridges

New Vernon RDCR604 over Black Brook

Fair

Morris County, New Jersey · 0.82 MI North of CR 638 · Structure no. 1400544

Built
1988
37 years old
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
4,831
2023 count
Owner
County
County Highway Agency

About this bridge

New Vernon RDCR604 over Black Brook is a prestressed concrete slab carrying New Vernon RDCR604 over Black Brook in Morris County, New Jersey. It was built in 1988, so it is 37 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 4,831 vehicles a day, roughly 3% of them trucks, projected to reach 5,895 by 2043. The structure is 46 ft (14 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNew Vernon RDCR604
CrossesBlack Brook
Location0.82 MI North of CR 638
RouteCounty Highway 604
CountyMorris County
StateNew Jersey
Coordinates40.7012, -74.47589
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length46 ft (14 m)
Longest span42 ft (12.8 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,831 (2023)
Projected traffic5,895 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was New Vernon RDCR604 over Black Brook built?

It was built in 1988, making it 37 years old in 2025.

What condition is New Vernon RDCR604 over Black 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 August 2023.

How much traffic does New Vernon RDCR604 over Black Brook carry?

About 4,831 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is New Vernon RDCR604 over Black Brook?

The structure is 46 ft (14 m) long with a longest span of 42 ft (12.8 m) and a deck 28 ft wide.

Who owns New Vernon RDCR604 over Black Brook?

It is owned by the County Highway Agency.