 CR 512 begins at an intersection with CR 513 in Califon, Hunterdon County, heading southeast on two-lane undivided Main Street past homes.Following the crossing the South Branch Raritan River, the route turns south onto Academy Street and makes a turn east into wooded areas.After intersecting Main Street again, the road becomes Fairmount Road West and heads into Tewksbury Township, where it passes through a mix of farms, woods, and homes.