In the fifty years before 1830, the new west was settled and steadily growing as people poured westwards along the various
Emigrant Trails into the
Midwest to destinations on a million new farms and towns throughout the watershed of the
Mississippi Valley towards the lands organized in the
Northwest Territory. The goal of the
enabling acts was to enhance commerce and lower transportation costs between east and west, better joining the trans-Allegheny region to the eastern seaboard; this was a commercially motivated act with an eye towards servicing the growing markets of the new fast growing western settlements (Midwest) to the manufactories of the East. Provision was made in the later legislation to tie in and even extend privately built canals such as the
Lehigh Canal, not technically part of the Pennsylvania Canal system, and link them and the state's infant railroads to the public system and add to its value. The canal linking
Philadelphia to the
Susquehanna River, the proposed Pennsylvania Canal from Philadelphia to the
Wright's Ferry landing in
Columbia, Pennsylvania, was overtaken by technological events. Instead of pouring money into building a ditch, permission was sought by the investors to use its right of way to replace it in the
Main Line of Public Works scheme by a railway, a new developing technology, which resulted in the
Philadelphia and Columbia Railroad (1834). Since they were built above ground, railways were easier and cheaper to build, since no ditches needed to be dug with human
muscle power, nor did they require feed waters to be located and aqueducts built to provide them. The plan also included a visionary scheme to build a ramp system which would roll canal boats over the
Allegheny Mountains at an elevation over through the broad uneven saddle of
Cresson Pass. Though most of the canals no longer have any function, some segments retain value as historic and recreational sites. Both the
Delaware Canal and the lower
Lehigh Canal were kept busy into the tough financial years of the
Great Depression. The right of way authorized for the Upper Lehigh Canal became an extension of the
Lehigh and Susquehanna Railroad (LH&S), which the 1837 revised act had established to connect the
Wyoming Valley to the
Delaware River navigations; the railway would eventually parallel the entire Lehigh Canal operated by its parent
LHC&N. The route from Philadelphia to Wilkes-Barre over the Lehigh and LH&S or eventual LH&S cut over off the trip, including a similar distance saving Philadelphia to
Pittsburgh via
Pitston Landing's canal docks. The first three tunnels of any kind in the US were built in support of the Allegheny Portage Railway, and all of them were converted to railroad tunnels. ==History==