17th Century

Frankford Avenue Bridge (Philadelphia County, Pennsylvania)
Built 1697 by the residents of Lower Dublin Township; widened 1893
Three-span stone arch bridge over Pennypack Creek on Frankford Avenue (US 13) in Holmesburg
Open to traffic

Lyme-Saybrook Ferry (New London County, Connecticut)
Established in 1662 and abolished in 1911 when automobile bridge built.
Lost Ferry across Connecticut River
Replaced by a new bridge

Rocky Hill - Glastonbury Ferry (Hartford County, Connecticut)
Built 1655
Bridge over Connecticut River on Route 160 - Cable Ferry (Hollister III)
Open to traffic