US Bridges

Rosedale RD(CR604) over Stony Brook

Fair

Mercer County, New Jersey · 1.74 MI East of Carter RD · Structure no. 1100041

Built
2009
16 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
78 ft
1 main span
Daily traffic
9,614
2023 count
Owner
County
County Highway Agency

About this bridge

Rosedale RD(CR604) over Stony Brook is a prestressed concrete box beam or girders - multiple carrying Rosedale RD(CR604) over Stony Brook in Mercer County, New Jersey. It was built in 2009, so it is 16 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 9,614 vehicles a day, roughly 4% of them trucks, projected to reach 11,424 by 2043. The structure is 78 ft (23.8 m) long and 53 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRosedale RD(CR604)
CrossesStony Brook
Location1.74 MI East of Carter RD
RouteCounty Highway 604
CountyMercer County
StateNew Jersey
Coordinates40.3456, -74.68989
Functional classUrban Minor Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating78 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length78 ft (23.8 m)
Longest span73 ft (22.3 m)
Deck width53 ft (16.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,614 (2023)
Projected traffic11,424 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Rosedale RD(CR604) over Stony Brook built?

It was built in 2009, making it 16 years old in 2025.

What condition is Rosedale RD(CR604) over Stony 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 2023.

How much traffic does Rosedale RD(CR604) over Stony Brook carry?

About 9,614 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Rosedale RD(CR604) over Stony Brook?

The structure is 78 ft (23.8 m) long with a longest span of 73 ft (22.3 m) and a deck 53 ft wide.

Who owns Rosedale RD(CR604) over Stony Brook?

It is owned by the County Highway Agency.