Colonial “roads” could range from foot paths to the official “King’s Road”.  This road was created 40 rods wide, (according to this transcription by Genevieve Van Duzer)  A rod is 16.5 feet, so while it is unlikely that the trees and brush were cleared for this width, this emphasizes that colonial travelers felt the need for wide margins where they could see, in order to feel safe. Many “Kings Roads” were created during the French and Indian Wars as the need to move troops and ordinance about quickly increased.

The Warwick portion of the road began within Joseph Perry’s land (he owned the area near Wickham Lake, which in early days was called “Perry’s Pond”); Thomas Blain’s property was in the vicinity of the Chateau Hathorn and Shoprite, the Double Kill crosses the present Rt. 94 at New Milford, and Thomas DeKay’s house was over the line into New Jersey.

Environmental changes are implied by this document:  Lands were being cleared, fences erected.  One story from colonial days that is in Under Old Rooftrees, from colonial days:
“One landed proprietor was wont, as he sat before his blazing
hearth, to muse on the prospects of his descendants for fuel and grieve for fear the wood might be exhausted and future want exist.
Sometimes the good old man, although owning broad acres of
timber, would remove an extra brand, saying, "We must be very
careful; I don't know what our children will do for wood, it's going so
fast."