From Rhode Island:

  Route 146 North to Central Turnpike Exit. Left at the stop sign. Go 4 miles to 4way stop . sign at the 4 corners. Go straight through the intersection, continue for 1 mile
  Take a left onto Manchaug Road. Campground is 4/5 of a mile on the right.

 From Mass. Pike: 

  Exit #10A Route 146 South to Central Turnpike Exit. Right at the stop sign. Go 4 miles
  to 4way stop sign at the 4 corners. Go straight through the intersection, continue
  for 1 mile. Take a left onto Manchaug Road. Campground is 4/5 of a mile on the right.

From Connecticut: 

  395 North to Exit 4A. Take Sutton Avenue 4 miles to Manchaug Road on right.
  Campground is 4/5 of a mile on the right.