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 295
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	200 ft north of MCDOT driveway	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
Princeton Ave RT 569	Hopewell Township Line 160 ft South of 1st Street	E Broad St RT 518

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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 / Nassau 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

W Delaware Ave CR 624	Pennington Rd NJ 31	S Main St CR 640/N Main St CR 640
E Delaware Ave CR 624	S Main St CR 640/N Main St CR 640	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 CR 624 / E Delaware Ave CR 624
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	N Clinton Ave/S Clinton Ave	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 583 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 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 Blvd N / Village Rd W	Lawrence Township Line North end of planted median North of Province Line Rd RT 569 / Nassau 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 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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