The following is a list of county routes in Somerset County in the U.S. state of New Jersey. For more information on the county route system in New Jersey as a whole, including its history, see County routes in New Jersey.
500-series county routes In addition to those listed below, the following 500-series county routes serve Somerset County: CR 512, CR 514, CR 518, CR 523, CR 525, CR 527, CR 529, CR 531, CR 533, CR 533 Spur, CR 567
Other county routes Route Length(mi) Length(km) From Via To Notes Great Road and Cherry Valley Road at the Mercer County line in Montgomery TownshipGreat Road, Belle Mead–Blawenburg Road, Trent Avenue US 206 in Montgomery Township Camp Meeting Avenue and CSX's Trenton Subdivision in Montgomery TownshipSkillman RoadBelle Mead–Blawenburg Road (CR 601) and Skillman Road in Montgomery Township Route 27 and Heathcote Road on the Franklin/South Brunswick township lineLaurel Avenue, Kingston–Rocky Hill RoadGeorgetown–Franklin Turnpike (CR 518) and Canal Road in Franklin Township Belle Meade–Blawenburg Road (CR 601) in Montgomery TownshipDutchtown–Harlingen RoadUS 206 and Harlingen Road in Montgomery Township River Road (CR 605) at the Mercer County line in Montgomery TownshipRiver Road, Crescent AvenueWashington Street (CR 518) in Rocky Hill South Branch Road (CR 567) in BranchburgStuddiford DriveRiver Road (CR 625) in Hillsborough Route 27 on the Franklin/South Brunswick township lineOld RoadDead end on the Franklin/South Brunswick township lineUnsigned, follows the Franklin/South Brunswick township line; also known as Middlesex CR 618 US 206 in HillsboroughDukes Parkway EastNorth Main Street (CR 533) in Manville River Road (CR 533) in Montgomery TownshipBridgepoint RoadUS 206 in Montgomery TownshipDecommissioned in 2006, but still signed Canal Road (CR 623) in South Bound BrookEdgewood TerraceMain Street (CR 527) in South Bound Brook Main Street (Route 28) and North Gaston Avenue (Route 28) in SomervilleEast Main StreetEast Main Street (CR 533) and Finderne Avenue (CR 533/CR 633) in Bridgewater Valley Road (CR 512) in Bernards TownshipStonehouse Road, South Finley Avenue, North Finley Avenue, Childs RoadUS 202 in Bernards Township US 22 in BranchburgEaston TurnpikeUS 22 and Easton Turnpike (Route 28) in Bridgewater Route 27 on the Franklin/South Brunswick township lineSouth Middlebush RoadAmwell Road (CR 514) in Franklin Township Washington Valley Road (CR 525) and Chimney Rock Road (CR 525) in BridgewaterWashington Valley RoadWashington Valley Road (CR 527) and Morning Glory Road (CR 527) in Warren Township Route 27 on the Franklin Township/New Brunswick border Franklin BoulevardLanding Lane (CR 609) at the Middlesex County line in Franklin Township Liberty Corner Road (CR 525) on the Bernards/Warren township line Mount Horeb RoadMount Bethel Road (CR 651) in Warren TownshipDesignated by the New Jersey Department of Transportation as CR 607 Amwell Road (CR 514) in Franklin TownshipCedar Grove LaneEaston Avenue (CR 527) in Franklin Township Rattlesnake Bridge Road (CR 665) in BedminsterBurnt Mills Road, Washington Valley RoadMt Horeb Road (CR 525) and Washington Valley Road (CR 525) in Bridgewater Amwell Road (CR 514) in Franklin TownshipElizabeth Avenue, Elizabeth Street Canal Road (CR 623) in South Bound Brook Stirling Road (CR 653) in Warren TownshipMountain AvenueMountain Avenue (CR 622) at the Union County line in Warren Township South Main Street (CR 533) in ManvilleWilhousky Street, Manville Causeway, Weston Canal Road, Canal RoadMain Street (CR 527) in South Bound Brook Mount Airy Road (CR 525) in Bernards TownshipWest Oak Street, East Oak StreetSouth Maple Avenue (CR 657) and North Maple Avenue (CR 657) in Bernards Township Amwell Road (CR 514) in HillsboroughMarshall Road, South Branch Road, River Road, Lyman StreetFirst Avenue (CR 567) and Somerset Street (CR 567/CR 626) in Raritan First Avenue CR 567, Somerset Street (CR 567), and Lyman Street (CR 625) in RaritanSomerset StreetWest End Avenue (Route 28) in Somerville South Branch Road (CR 625) in HillsboroughNew Centre RoadRoycefield Road and Dukes Parkway West in Hillsborough Main Street (CR 671) and Old Chester Road (CR 671) in Peapack-GladstoneJackson AvenueMendham Road (CR 647) in Peapack-Gladstone Pleasant Run Road (CR 567) and South Branch Road (CR 567) in BranchburgPleasant Run RoadPleasant Run Road (CR 629) at the Hunterdon County line in Branchburg US 206 in Montgomery TownshipBelle Mead–Griggstown Road, Griggstown RoadRiver Road (CR 533) in Montgomery Township US 22 in North PlainfieldSomerset Street, Johnston DriveWatchung Avenue (CR 531) in Watchung River Road (CR 533) in Montgomery TownshipGriggstown Causeway, Canal Road, Bunkerhill RoadRoute 27 on the Franklin/South Brunswick township line Finderne Avenue (CR 533) and East Main Street (CR 533/CR 612) in BridgewaterFinderne AvenueUS 22 in Bridgewater Sebrings Mills Road in Green BrookGreenbrook Road, Warrenville RoadRock Avenue (CR 645) on the Green Brook/North Plainfield border Talmage Avenue (CR 533) in Bound BrookVosseller AvenueUnion Avenue (Route 28) in Bound Brook Rock Avenue (CR 645) on the Green Brook/North Plainfield border Greenbrook RoadMountain Avenue (CR 531) in North Plainfield Old York Road (CR 567) and South Branch Road (CR 567) in BranchburgOld York Road, Dreahook Road, Readington Road, Raritan Valley College RoadEaston Turnpike (CR 614) in Branchburg Washington Valley Road (CR 527) and Mountain Boulevard (CR 527) in Warren TownshipWashington Valley Road ExtensionWarrenville Road (CR 651) in Warren Township Pannone Drive and Grove Street in BridgewaterNorth Bridge Street, Foothill RoadUS 202/US 206 in Bridgewater Church Street (CR 512) and Valley Road (CR 512) in Bernards TownshipLyons Road, South Finley AvenueStonehouse Road (CR 613) and South Finley Avenue (CR 613) in Bernards Township Easton Turnpike (CR 614) in BranchburgBurnt Mills Road, Cowperthwaite Road Burnt Mills Road (CR 620) in Bedminster Somerset Street (CR 531) in North PlainfieldMountain AvenueUS 22 in North Plainfield Somerset Street (CR 626) in SomervilleMountain AvenueUS 22 on the Bridgewater/Somerville border Dead end in RaritanFrelinghuysen AvenueWest End Avenue (Route 28) on the Raritan/Bridgewater border Rock Avenue at the Union County line on the Green Brook/North Plainfield borderRock AvenueUS 22 on the Green Brook/North Plainfield border US 202 in BranchburgChubb WaySouth Branch Road (CR 567) in Branchburg Main Street (CR 512) in Peapack-GladstoneMendham RoadMendham Road at the Morris County line in Peapack-Gladstone Route 27 on the Franklin/South Brunswick township line Claremont RoadSouth Middlebush Road (CR 615) in Franklin Township Grant Avenue at Union County line in North PlainfieldWest End AvenueUS 22 in North Plainfield Dead end in HillsboroughSchilke Lane, Amwell RoadMillstone River Road (CR 533) in Millstone Warrenville Road at the Middlesex County line in Green BrookWarrenville Road, Mount Bethel Road, King George RoadValley Road (CR 512) in Bernards Township I-287 in BedminsterSchley Mountain Road, Allen RoadMartinsville Road (CR 525) in Bernards TownshipOne sign at each east/west terminus as of 2025 Mountain Boulevard (CR 527), Somerset Street (CR 531), Valley Road (CR 527), and Hillcrest Road (CR 531) at the Watchung Circle in WatchungStirling RoadPlainfield Road (CR 606) at the Morris County line in Warren Township East Main Street (CR 533) in Bound BrookEast High Street, Veterans Memorial DriveEast Street (CR 689) in Bound Brook Park Avenue (Union CR 655) and Bonnie Burn Road at the Union County line in WatchungNew Providence RoadDiamond Hill Road (Union CR 655) at the Union County line in Watchung Route 27 in Franklin TownshipAndover DriveOld Road (CR 607) on the Franklin/South Brunswick township lineUnsigned Basking Ridge Road (Morris CR 657) at the Morris County line in Bernards TownshipSouth Maple AvenueEast Oak Street (CR 624) in Bernards Township Millstone River Road (CR 533) in HillsboroughBlackwells Mills RoadCanal Road in Franklin Township Claremont Road (CR 525) and Mendham Road (CR 525) in BernardsvilleClaremont Road, Turnbull Lane, Dryden RoadBliss Road at the Morris County line in Bernardsville Amwell Road (CR 514) in HillsboroughByara CourtDead end in HillsboroughUnsigned US 206 in Peapack-GladstoneHolland AvenueMain Street (CR 512) in Peapack-Gladstone Dead end in HillsboroughBrower LaneDead end in HillsboroughUnsigned Ramp to US 22 at the Union County line in WatchungUnion AvenueNew Providence Road (CR 655) in Watchung Easton Turnpike (CR 614) in BranchburgLamington Road, Rattlesnake Bridge RoadLamington Road (CR 523) in BedminsterFormer CR 523 Spur River Road (CR 567) in HillsboroughElm Street, Maple Avenue, Pleasant Run RoadRiver Road (CR 567) and Pleasant Run Road (CR 567) in Branchburg Main Street (CR 512) and Pottersville Road (CR 512) in Peapack-GladstoneMain Street, Old Chester RoadOld Chester Road at the Morris County line in Peapack-Gladstone North Bridge Street (CR 639) and Prince Rodgers Avenue in BridgewaterVogt DriveNorth Gaston Avenue in Bridgewater Dead end in BridgewaterPolhemus Lane, Chimney Rock RoadChimney Rock Road (CR 525) and Thompson Avenue (CR 525) in Bridgewater Amwell Road (CR 514) in HillsboroughEast Mountain RoadSouth Branch Road (CR 625) in Hillsborough Readington Road (CR 637) in BranchburgStation RoadEaston Turnpike (CR 614) in Branchburg Schilke Drive (CR 650) and Amwell Road (CR 650) in HillsboroughAmsterdam DriveAmwell Road (CR 514) in Hillsborough East Main Street (CR 533) in BridgewaterFoothill RoadChimney Rock Road (CR 675) in Bridgewater East Main Street (CR 533) in BridgewaterPromenade BoulevardUnion Avenue (Route 28) in Bridgewater Talmage Avenue (CR 533) in Bound BrookTea StreetEast Main Street (Route 28) in Bound Brook East Main Street (CR 527/CR 533) in Bound BrookBolmer Boulevard, East StreetUnion Avenue (Route 28) in Bound Brook South Middlebush Road (CR 615) in Franklin TownshipSouth Middlebush Road ExtensionDead end in Franklin TownshipUnsigned Amwell Road (CR 514) in HillsboroughService RoadBrower Lane (CR 662) in HillsboroughUnsigned Bonnie Burn Road and US 22 at the Union County line in WatchungBonnie Burn RoadValley Road (CR 527) and Plainfield Avenue (CR 641) in WatchungAssigned in October 2023 to replace the former southern segment of CR 641
See also
References