County highway
County Route 16 is a county-maintained highway stretching from NY 25 in Village of the Branch eastward to Montauk Highway (CR 80) in Brookhaven consisting of part of five roads: Terry Road, Smithtown Boulevard, Lake Shore Drive (formerly East Lake Terrace), Portion Road, and Horse Block Road. CR 16 has been in the Suffolk County highway system since January 27, 1930.