A tidal gristmill was built on the Hackensack River. This mill got its power from an artificial pond: the high tide was trapped in the mouth of Cole's Brook by a dam with a special drop-gate, suspended from a horizontal timber. When the tides flowed out of the Hackensack River, the tidal millpond was slowly released through the waterwheel. Sloops pulled alongside the mill at New Bridge Landing. On March 9, 1744, a road was surveyed from Kinderkamack Road to the narrows of the Hackensack River where a "New Bridge" was to be erected (forming was is now Main Street, River Edge).