Lost during 1810s

Essex-Merrimack Bridge (Oldest) (Essex County, Massachusetts)
Built 1792; Newbury side replaced 1810; Salisbury side replaced 1883
Lost Through truss bridge over Merrimack River
Replaced by a new bridge

Falls of Schuylkill Bridge (Philadelphia County, Pennsylvania)
Built 1808; collapsed 1816
Lost Chain suspension bridge over Schuylkill River on Road
Replaced by a new bridge

Y Bridge (1st) (Muskingum County, Ohio)
Built 1814, Collapsed 1819
Lost Through truss bridge over Muskingum River & Licking River on National Road
Collapsed