which is located further east, The Susquehanna and Tidewater Canal or the Portage Canal?
Susquehanna and Tidewater Canal The Susquehanna and Tidewater Canal between Wrightsville, Pennsylvania, and Havre de Grace, Maryland, at the head of Chesapeake Bay, provided an interstate shipping alternative to 19th-century arks, rafts, and boats plying the difficult waters of the lower Susquehanna River. Built between 1836 and 1840, it ran 43 mi along the west bank of the river and rendered obsolete an older, shorter canal along the east bank. Of its total length, 30 mi were in Pennsylvania and 13 mi in Maryland. Though rivalry between Philadelphia, Pennsylvania, and Baltimore, Maryland, delayed its construction, the finished canal brought increased shipments of coal and other raw materials to both cities from Pennsylvania's interior. Competition from railroads was a large factor in the canal's decline after 1855. Canal remnants, including a lock keeper's house, have been preserved in Maryland, and locks 12 and 15 have been preserved in Pennsylvania. A copy of a detailed survey blueprint of the entire canal system including structures and property ownership details was donated (date unknown) by the Safe Harbor Water Power Corporation to Millersville University (assessed on 10/06/2016 in the MU Archives at Sp. Coll. Map 386.409748 S128 Folio). The survey consists of 67 pages, 98 x 30 cm. and is undated but the assumption is the original was created while the canal was in use.
Portage Bridge The Portage Bridge (French: "Pont du Portage" ) crosses the Ottawa River just down-river from the Chaudière Bridge, joining the communities of Gatineau, Quebec and Ottawa, Ontario. It links Laurier Street and Alexandre-Taché Boulevard in the Hull sector of Gatineau and Wellington Street at the Garden of the Provinces and Territories in Ottawa, crossing Victoria Island on the way.