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Jamesburg Park Conservation Area

Pine Barrens Trail
Jamesburg Park Conservation Area



Helmetta Boulevard-Old Stage Road; East Brunswick, Helmetta, Spotswood, Monroe Township



Washington Avenue, Helmetta


GPS Coordinates:  40° 22’ 39.27’’ N ; 74° 25’ 56.67’’ W



Helme Mill Park, Maple Street, Helmetta


GPS Coordinates:  40° 22’ 41.65’’ N ; 74° 25’ 534.54’’ W



1414 Acres

Jamesburg Park Conservation Area Trail Map (Adobe PDF)

Jamesburg Park Conservation Area was some of the first lands that Middlesex County acquired using Green Acres funding for open space protection in the early 1970’s.  It protects both the underground resources of the Old Bridge Sands aquifer, and a unique pine barrens habitat in Middlesex County.

Jamesburg Park Conservation Area lies within the Spotswood Outlier—the northernmost area of New Jersey Pine Barrens habitat.  Along the several miles of trails you can find typical Pine Barrens species—pitch pine trees, blueberries, huckleberries and post oaks.  The wetlands protect  Atlantic white cedar trees and carnivorous pitcher plants.  Several endangered and threatened species of plants and animals have been observed in this preserved open space

Jamesburg Park would have been very different if the proposed development had come to fruition.  In the early 20th century , visitors were brought by train from New York to enjoy Saturday night dances and purchase land in the countryside of New Jersey.  While the development never came to be, you can still find sidewalks in the woods showing where the streets were meant to run.  Cranberry bogs covered some of the wetland areas, and the waters from Jamesburg Park Conservation Area were used by the nearby Helme Snuff mill.

 Parking, portable restrooms, picnic tables and a playground can be found at Helme Mill Park on Maple Street in Helmetta.

 Use caution when crossing public streets or walking to the trail-head on Washington Blvd.

 There are many old, unmarked trails.  For your safety—please stay on the marked trails.




Directions to Helme Mill Park parking lot 

From Route 130
· Turn East onto Davidsons Mill Road
· Turn left onto Cranbury/South River Road (County Road)
· Turn right  at the traffic light onto Helmetta Blvd
· Slow your speed as you enter the town of Helmetta
· Turn right onto Maple Avenue
· Park will be on your right hand side  

From Route 18
· Take the exit for County Route 615 South
· Turn right onto Main St  (CR 615)
· Continue onto Manalapan Road (CR 615)
· Continue onto Main Street (CR 615)
· Turn right onto Maple Street
· Park will be on your left   

From the NJ Turnpike
· Take Exit 9 for Route 18(New Brunswick/East Brunswick)
· Keep left at the fork, follow signs for NJ-18 S
· Follow directions from Route 18 above  From 287
· Take exit 1B for US 1 South towards Trenton
· Take exit for Route 18 South
· Follow directions from Route 18 above