County Routes and Roadways

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The Mercer County Department of Transportation & Infrastructure maintains collector and arterial thoroughfares as part of a safe, efficient and reliable surface transportation system for all travelling within and through Mercer County. The routes and roadways maintained by Mercer County are within the bounds of our local government jurisdictions. To better identify them, road descriptions within each municipality's limits are detailed below. All roadways not listed here are maintained by local municipal public works agencies or the New Jersey Department of Transportation.

Please refer to the lists below to help verify Mercer County jurisdiction when reporting observed potholes or when preparing to apply for a permit for utility or other work that will disturb road pavement within the County.

East Windsor Twp Hopewell Boro Princeton
Ewing Twp Hopewell Twp Robbinsville Twp
Hamilton Twp Lawrence Twp Trenton City
Hightstown Boro Pennington Boro West Windsor Twp

 

Thoroughfares maintained by the County of Mercer within the Township of East Windsor
Listing Alphabetical by Full Road Name
     
Road Name From To
Etra Rd RT 571 County Line
Between 706 and 658 Etra Rd
Hightstown Borough Line
0.26 mi North of Ward St / Meadow Lakes
Imlaystown Rd CR 630 Windsor-Perrineville Rd CR 630 County Line
South Corner of Horse Track Fence
Monmouth St CR 633 NJ 33 / Milford Rd Hightstown Borough Line
290 Monmouth Rd Driveway
N Main St RT 539 Hightstown Borough Line
North edge of 602 N Main St Driveway
County Line
Bridge over Millstone River
Old Trenton Rd RT 535 West Windsor Township Line
0.25 mi East of Dantone Blvd / Dorchester Dr
County Line
Bridge over Millstone River
Old York Rd RT 539 Robbinsville Township Line
Bridge over Assunpink Creek
Hightstown Borough Line
638 Old York Rd Driveway
Princeton-Hightstown Rd RT 571 US 130 West Windsor Township Line
0.6 mi North of Old Trenton Rd RT 535
Stockton St RT 571 Hightstown Borough Line
444 Stockton St Driveway
US 130
Windsor-Perrineville Rd CR 630 Old York Rd RT 539 Imlaystown Rd CR 630

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Thoroughfares maintained by the County of Mercer within the Township of Ewing
Listing Alphabetical by Full Road Name
     
Road Name From To
Arctic Pkwy CR 639 N Olden Ave CR 622 Spruce St CR 613
Bear Tavern Rd RT 579 W Upper Ferry Rd CR 634 Hopewell Township Line
Bridge over Ewing Creek
Boeing Ave E Piper Ave Sam Weinroth Rd CR 600
Calhoun St W Ingham Ave
Trenton City Line
Kirkbride Ave
Trenton City Line
Control Tower Dr Trenton-Mercer Airport Fence Gate 1 Sam Weinroth Rd CR 600
at Airport Staff Parking Lot Entrance
Sam Weinroth Rd CR 600
at Terminal Circle Dr Exit
Bear Tavern Rd RT 579
E Piper Ave Grumman Ave Lockheed Ave
Ewingville Rd CR 636 Spruce St CR 613 Pennington Rd NJ 31
Grand Ave RT 579 Railroad Ave W Upper Ferry Rd CR 634
Grumman Ave E Piper Ave / W Piper Ave Sam Weinroth Rd CR 600
Jack Stephan Way W Upper Ferry Rd CR 634 /
Parkway Ave CR 634
Trenton-Mercer Airport Fence Gate
Jacobs Creek Rd CR 637 River Rd NJ 29 Bear Tavern Rd RT 579
Lockheed Ave E Piper Ave Sam Weinroth Rd CR 600
Lower Ferry Rd CR 643 John Fitch Way NJ 29 Hopewell Township Line
375 ft North of Bridge over Interstate 95
Mooney Ave Grumman Ave Boeing Ave
N Olden Ave CR 622 Princeton Ave RT 583
Trenton City Line
Parkway Ave CR 634 / Lexington Ave
Nursery Rd CR 647 Bear Tavern Rd RT 579 Hopewell Township Line
Bridge over Ewing Creek
Parkside Ave CR 636 Parkway Ave CR 634
Trenton City Line
Spruce St CR 613
Parkway Ave CR 634 Jack Stephan Way / Decou Ave W Ingham Ave
Pitcairn Ave Lockheed Ave Trenton-Mercer Airport Fence Gate 12
Princeton Ave RT 583 Trenton City Line
40 ft South of Siegel Ave
Spruce St CR 613
Trenton City Line
Prospect St CR 627 Parkway Ave CR 634 Spruce St CR 613
Sam Weinroth Rd Commercial Complex Entrances Scotch Rd CR 611
Sam Weinroth Rd CR 600 Scotch Rd CR 611 Bear Tavern Rd RT 579
Scotch Rd CR 611 Parkway Ave CR 634 Hopewell Township Line
Bridge over Ewing Creek
S Cessna Ave Trenton-Mercer Airport Fence Gate 18 Sam Weinroth Rd CR 600
Spruce St CR 613 Princeton Ave RT 583 Parkside Ave CR 636 /
Ewingville Rd CR 636
Sullivan Way RT 579 Trenton City Line
Bridge over Delaware & Raritan Canal tributary
Railroad Ave
Terminal Circle Dr Sam Weinroth Rd CR 600
Entrance between Trenton-Mercer Airport Main Parking Lot and Auxillary Parking Lot
Sam Weinroth Rd CR 600
Exit between Trenton-Mercer Airport Main Parking Lot and Airport Staff Parking Lot
Upper Ferry Rd CR 636 Pennington Rd NJ 31 Scotch Rd CR 611
W Piper Ave S Cessna Ave Grumman Ave
W Upper Ferry Rd CR 634 River Rd NJ 175 Jack Stephan Way / Decou Ave
Whitehead Rd CR 648 Ewingville Rd CR 636 End
Johnson Trolley Line

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Thoroughfares maintained by the County of Mercer within the Township of Hamilton
Listing Alphabetical by Full Road Name
     
Road Name From To
Arena Dr CR 620 S Broad St RT 524 S Olden Ave CR 622
Arena Dr (former alignment) Churchill Ave Southbound Arena Dr CR 620
Chambers St CR 626 Liberty St
Trenton City Line
S Broad St US 206
Church St CR 609 Bridge over Doctors Creek Main St Groveville
Church St CR 672 County Line
Bridge over Crosswicks Creek
S Broad St CR 672 / S Broad St
E State St RT 535 Trenton City Line
125 ft North of Logan Ave
Klockner Rd
Edinburg Rd RT 535 Quakerbridge Rd RT 533 /
White Horse-Mercerville Rd RT 533
5 Points Mercerville
West Windsor Township Line
0.15 mi West of Mercer County Community College Entrance
Flock Rd Edinburg Rd RT 535 Quakerbridge Rd RT 533
Hamilton Ave CR 606 S Olden Ave CR 622
Trenton City Line
Nottingham Way NJ 33
Kuser Rd CR 619 White Horse-Mercerville Rd RT 533 Hamilton Ave CR 606
Lalor St CR 650 Trenton City Line
Northbound NJ 129
S Broad St US 206
Nottingham Way CR 614 Trenton City Line
Bridge over Assunpink Creek
Greenwood Ave NJ 33
Nottingham Way CR 652 NJ 33 E State St Ext RT 535
Nottingham Way RT 535 E State St Ext RT 535 Quakerbridge Rd RT 533 /
White Horse-Mercerville Rd RT 533
5 Points Mercerville
Nottingham Way CR 618 Quakerbridge Rd RT 533 /
White Horse-Mercerville Rd RT 533
5 Points Mercerville
NJ 33
Quakerbridge Rd RT 533 Edinburg Rd RT 535 /
Nottingham Way RT 535 & CR 618
5 Points Mercerville
Lawrence Township Line
Bridge over Assunpink Creek
S Broad St RT 524 White Horse Circle US 206 Roadway Division at Interstate 195
Bridge over Gropps Lake Yardville-Groveville Rd CR 609 /
Yardville-Hamilton Square Rd
5 Points Groveville
S Broad St CR 672 Church St CR 672 /
Crosswicks-Hamilton Square Rd
Yardville-Groveville Rd CR 609 /
Yardville-Hamilton Square Rd
5 Points Groveville
S Olden Ave CR 622 Arena Dr CR 620 Hamilton Ave CR 606
Trenton City Line
Sloan Ave CR 649 American Metro Blvd Roadway Division at Interstate 295
Sloan Ave Quakerbridge Rd RT 533 Roadway Division at Interstate 295
Sweetbriar Ave CR 649 Whitehead Rd CR 616 American Metro Blvd
White Horse Ave RT 533 White Horse Circle US 206 S Olden Ave CR 622
White Horse-Mercerville Rd
RT 533
S Olden Ave CR 622 Edinburg Rd RT 535 /
Nottingham Way RT 535 & CR 618
 5 Points Mercerville
Whitehead Rd CR 616 Roberts Ave / E State St RT 535 Lawrence Township Line
Bridge over Assunpink Creek
Yardville-Allentown Rd RT 524 Yardville-Hamilton Square Rd /
Yardville-Groveville Rd CR 609
5 Points Groveville
County Line
45 ft East of Soccer Complex Entrance
Yardville-Groveville Rd CR 609 S Broad St RT 524 & CR 672 /
Yardville-Allentown Rd RT 524
5 Points Groveville
Bridge over Doctors Creek

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Thoroughfares maintained by the County of Mercer within the Borough of Hightstown
Listing Alphabetical by Full Road Name
     
Road Name From To
Etra Rd RT 571 East Windsor Township Line
0.22 mi N of Ward St / Meadow Lakes
S Main St RT 539
Monmouth St CR 633 East Windsor Township Line
290 Monmouth Rd Driveway
N Main St RT 539
N Main St RT 539 Franklin St NJ 33 East Windsor Township Line
Northbound stop bar at Town Center Rd
S Main St RT 539 East Windsor Township Line
638 Old York Rd Driveway
Mercer St NJ 33
Stockton St RT 571 S Main St NJ 33 / N Main St NJ 33 East Windsor Township Line
444 Stockton St Driveway

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Thoroughfares maintained by the County of Mercer within the Borough of Hopewell
Listing Alphabetical by Full Road Name
     
Road Name From To
E Broad St RT 518 N Greenwood Ave /
S Greenwood Ave
Hopewell Township Line
55 ft East of Elm St
Louellen Rd RT 518 Hopewell Township Line
50 ft West of Hart Ave
W Broad St CR 654 /
W Broad St RT 518
W Broad St CR 654 Hopewell Township Line
210 ft West of Windsor Way
Louellen Rd RT 518
W Broad St RT 518 Louellen Rd RT 518 N Greenwood Ave /
S Greenwood Ave

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Thoroughfares maintained by the County of Mercer within the Township of Hopewell
Listing Alphabetical by Full Road Name
     
Road Name From To
Bear Tavern Rd RT 579 Ewing Township Line
Bridge over Ewing Creek
Pennington-Harbourton Rd CR 623 /
Pleasant Valley Rd
Blackwell Rd RT 546 Pennington Circle NJ 31 Pennington-Lawrenceville Rd
CR 632 & RT 546
Blackwell Rd CR 632 Pennington-Lawrenceville Rd
CR 632 & RT 546
Benjamin Trl
Carter Rd RT 569 Lawrence Township Line
420 ft South of Elm Ridge Rd CR 625
Pennington-Rocky Hill Rd /
Cherry Valley Rd
Elm Ridge Rd CR 625 Pennington-Rocky Hill Rd CR 624 Carter Rd RT 569
Hopewell-Princeton Rd RT 569 Pennington-Rocky Hill Rd /
Cherry Valley Rd
Hopewell Borough Line
160 ft South of 1st St
Hopewell-Rocky Hill Rd RT 518 Hopewell Borough Line
55 ft East of Elm St
Province Line Rd
County Line
Ingleside Ave CR 631 Washington Crossing-Pennington Rd
RT 546
Pennington Borough Line
315 ft North of NJ 31
Lambertville-Hopewell Rd RT 518 County Line
105 ft West of Harbourton-Mount Airy Rd
Hopewell Borough Line
50 ft West of Hart Ave
Marshalls Corner-Woodsville Rd CR 612 County Line
0.17 mi North of Lambertville-Hopewell Rd RT 518
Pennington-Hopewell Rd CR 654
N Main St CR 640 Pennington Borough Line
300 ft N of Franklin Ave
Pennington Boro Line
230 ft N of Hansen Pl
Pennington Borough Line
East curb of Woolsey Ct
NJ 31
Nursery Rd CR 647 Ewing Township Line
Bridge over Ewing Creek
Scotch Rd CR 611
Pennington-Harbourton Rd
CR 623
Bear Tavern Rd RT 579 Pennington Borough Line
Fenceline between 158 and 152 Pennington-Harbourton Rd
Pennington-Hopewell Rd CR 654 NJ 31 Hopewell Borough Line
210 ft West of Windsor Way
Pennington-Lawrenceville Rd
CR 632
S Main St CR 640 Blackwell Rd RT 546 /
Blackwell Rd CR 632
Pennington-Lawrenceville Rd
RT 546
Blackwell Rd RT 546 /
Blackwell Rd CR 632
Lawrence Township Line
0.14 mi East of Stephenson Rd / Federal City Rd
Pennington-Rocky Hill Rd CR 624 Pennington Borough Line
Bridge over Stony Brook
Titus Mill Rd
S Main St CR 640 Pennington Circle NJ 31 Pennington Borough Line
40 ft South of Vannoy Ave
Scotch Rd CR 611 Ewing Township Line
Bridge over Ewing Creek
Washington Crossing-
Pennington Rd RT 546
Trenton-Harbourton Rd RT 579 Pennington-Harbourton Rd CR 623 / Pleasant Valley Rd Pleasant Valley-Harbourton Rd / Harbourton-Woodsville Rd
Washington Crossing-
Pennington Rd RT 546
River Rd NJ 29 Pennington Rd Circle NJ 31

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Thoroughfares maintained by the County of Mercer within the Township of Lawrence
Listing Alphabetical by Full Road Name
     
Road Name From To
Brunswick Cir Ext CR 645 Brunswick Circle
US 1 Business / US 206
Princeton Ave RT 583
Carter Rd RT 569 Lawrence Rd US 206 Hopewell Township Line
420 ft South of Elm Ridge Rd CR 625
Fackler Rd RT 569 Trenton-Lawrenceville Rd Lawrence Rd US 206
Franklin Corner Rd RT 546 Lawrence Rd US 206 Brunswick Pike US 1
Grovers Mill Rd CR 638 Brunswick Pike US 1 Quakerbridge Rd RT 533
West Windsor Township Line
Lawrence Station Rd CR 608 Quakerbridge Rd RT 533 Chief James R Smith Dr
Mercer County Fire Academy Entrance
Pennington-Lawrenceville Rd
RT 546
Hopewell Township Line
0.14 mi East of Stephenson Rd / Federal City Rd
Lawrence Rd US 206
Princeton Ave RT 583 Spruce St CR 613 Lawrence Rd US 206
Province Line Rd RT 569 Quakerbridge Rd RT 533 Bridge over Delaware & Raritan Canal
Quakerbridge Rd RT 533 Hamilton Township Line
Bridge over Assunpink Creek
West Windsor Township Line
Gated Former American Cyanamid Company Exit
West Windsor Township Line
300 ft South of Province Line Rd RT 569 / Nassua Park Blvd
Princeton Municipal Line
Bridge over Delaware & Raritan Canal
Rosedale Rd CR 604 Carter Rd RT 569 Province Line Rd
Princeton Municipal Line
Spruce St CR 613 Princeton Ave RT 583 Ewing Township Line
Bridge over West Branch of Shabakunk Creek
Trenton-Lawrenceville Rd Fackler Rd RT 569 Lawrence Rd US 206
Whitehead Rd CR 616 Hamilton Township Line
Bridge over Assunpink Creek
Brunswick Ave US 1 Business

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Thoroughfares maintained by the County of Mercer within the Borough of Pennington
Listing Alphabetical by Full Road Name
     
Road Name From To
E Delaware Ave S Main St CR 640 / N Main St CR 640 Eglantine Ave
E Delaware Ave CR 624 Eglantine Ave Hopewell Township Line
Bridge over Stony Brook
Ingleside Ave CR 631 Hopewell Township Line
315 ft North of NJ 31
S Main St CR 640
N Main St CR 640 W Delaware Ave / E Delaware Ave Hopewell Township Line
East curb of Woolsey Ct
Pennington-Harbourton Rd
CR 623
Hopewell Township Line
Fenceline between 158 and 152 Pennington-Harbourton Rd
Pennington Rd NJ 31
S Main St CR 640 Hopewell Township Line
40 ft South of Vannoy Ave
W Delaware Ave / E Delaware Ave
S Main St CR 640 Residential Access Road S Main St CR 640 Tollgate Grammar School Driveway

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Thoroughfares maintained by the County of Mercer within the Municipality of Princeton
Listing Alphabetical by Full Road Name
     
Road Name From To
Elm Rd CR 604 Rosedale CR 604 / Cleveland Ln Stockton St US 206
River Rd CR 605 Princeton-Kingston Rd NJ 27 County Line
0.55 mi North of Herrontown Rd
Rosedale Rd CR 604 Province Line Rd
Lawrence Township Line
Elm Rd / Elm Rd CR 604
S Harrison St CR 629 Former Princeton Borough Line
100 ft North of Western Way
West Windsor Township Line
Bridge over Delaware & Raritan Canal
Washington Rd RT 571 West Windsor Township Line
Bridge over Delaware & Raritan Canal
Former Princeton Borough Line
290 ft South of Ivy Ln

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Thoroughfares maintained by the County of Mercer within the Township of Robbinsville
Listing Alphabetical by Full Road Name
     
Road Name From To
Church St CR 641 N Main St / S Main St US 130
Edinburg-Windsor Rd CR 641 West Windsor Township Line
0.16 mi East of South Ln
N Main St / S Main St
Old York Rd RT 539 Herbert Rd County Line
Bridge over Assunpink Creek
Robbinsville-Allentown Rd RT 526 Robbinsville Byp RT 526 County Line
Bridge over Indian Run
Robbinsville-Edinburg Rd RT 526 Line Rd
West Windsor Township Line
NJ 33
Robbinsville Byp RT 526 US 130 Robbinsville-Allentown Rd /
Robbinsville-Allentown Rd RT 526

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Thoroughfares maintained by the County of Mercer within the City of Trenton
Listing Alphabetical by Full Road Name
     
Road Name From To
Calhoun St CR 653 W State St Princeton Ave RT 583/
Martin Luther King Jr Blvd US 206 /
Chadwick St
Cass St Lamberton St S Broad St US 206
Chambers St CR 626 Lincoln Ave Bridge over Assunpink Creek Cedar Ln
Hamilton Township Line
E State St CR 635 Raoul Wallenberg Ave / Wall St N Logan Ave / S Logan Ave
E State St CR 535 N Logan Ave / S Logan Ave Trenton City Line
125 ft North of Logan Ave
Hamilton Ave CR 606 NJ 129 Hamilton Township Line
136 ft East of Francis Ave
Lalor St CR 650 Lamberton St S Broad St US 206
N Olden Ave CR 622 E State St CR 635 Princeton Ave RT 538
Ewing Township Line
Parkside Ave CR 636 W State St Parkway Ave CR 634
Ewing Township Line
Parkway Ave CR 634 Hillcrest Ave
Ewing Township Line
Kelsey Ave Ave
Ewing Township Line
Princeton Ave RT 583 Calhoun St CR 653 /
Martin Luther King Jr Blvd US 206 /
Chadwick St
Spruce St CR 613
Raoul Wallenberg Ave S Clinton Ave E State St CR 635
S Olden Ave CR 622 Liberty St
Hamilton Township Line
E State St CR 635
Sullivan Way RT 579 Northbound John Fitch Pkwy NJ 29 Ewing Township Line
Bridge over Delaware & Raritan Canal tributary

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Thoroughfares maintained by the County of Mercer within the Township of West Windsor
Listing Alphabetical by Full Road Name
     
Road Name From To
Clarksville Rd CR 638 Quakerbridge Rd RT 533
Lawrence Township Line
Cranbury Rd CR 615
Cranbury Rd CR 615 Princeton-Hightstown Rd RT 571 /
NJ 64 Rail Bridge
County Line
Bridge over Millstone River
Cranbury Rd (former alignment) Cranbury Rd CR 615 End
Edinburg-Dutch Neck Rd RT 526 Village Rd E / Village Rd E CR 644 Old Trenton Rd RT 535
Edinburg-Windsor Rd CR 641 Old Trenton Rd RT 535 Robbinsville Township Line
0.16 mi East of South Ln
Lower Harrison St CR 629 Princeton Municipal Line
Bridge over Delaware & Raritan Canal
Brunswick Pike US 1
Old Trenton Rd RT 535 Hamilton Township Line
0.15 mi West of Mercer County Community College Entrance
East Windsor Township Line
Princeton-Hightstown Rd RT 571 East Windsor Township Line
0.6 mi North of Old Trenton Rd RT 535
Wallace Rd / Cranbury Rd CR 615
Quakerbridge Rd RT 533 Lawrence Square Rd / Village Rd W Lawrence Township Line
North end of planted median North of Province Line Rd RT 569 / Nassua Park Blvd
Robbinsville-Edinburg Rd RT 526 Old Trenton Rd RT 535 Line Rd
Robbinsville Township Line
S Mill Rd RT 526 Princeton-Hightstown Rd RT 571 Woodmere Way
S Post Rd CR 602 Old Trenton Rd RT 535 Mercer County Park Gate
Village Rd E CR 644 New Edinburg Rd RT 526 /
Edinburg-Dutch Neck Rd RT 526
Southfield Rd / Southfield Rd CR 644
Washington Rd RT 571 NJ 64 Rail Bridge Brunswick Pike Circle US 1
Brunswick Pike Circle US 1 Princeton Municipal Line
Bridge over Delaware & Raritan Canal

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