and Columbia Railroad, canals up the Susquehanna and Juniata rivers, an inclined plane railroad called the Allegheny Portage Railroad, a tunnel across the Allegheny Mountains, and canals down the Conemaugh and Allegheny rivers to Pittsburgh, Pennsylvania, on the Ohio River; it was completed in 1834. Because freight and passengers had to change conveyances several times along the route and canals froze in winter, it soon became apparent that the system was cumbersome and a better way was needed. There were two applications made to the Pennsylvania legislature in 1846. The first was for a new railroad called The Pennsylvania Railroad Company to build a line between Harrisburg and Pittsburgh, Pennsylvania. The second was the Baltimore and Ohio Railroad (B&O), which wanted to build to Pittsburgh from Cumberland, Maryland. Both applications were granted under conditions. If the Pennsylvania Railroad did not raise enough capital and contract to build enough railroad within a year, then the B&O bill would become effective and the Pennsy's void, thereby allowing the B&O to build into Pennsylvania and on to Pittsburgh. The Pennsylvania Railroad fulfilled the requirements and Letters Patent were issued by the Pennsylvania governor on February 25, 1847. The governor declared the B&O's rights void the following August. Early years In 1847, the Pennsy's directors chose J. Edgar Thomson, an engineer from the Georgia Railroad, to survey and construct the line. He chose a route that followed the west bank of the Susquehanna River northward to the confluence with the Juniata River, following its banks until the foothills of the Allegheny Mountains were reached at a point that would become Altoona, Pennsylvania. To traverse the mountains, the line would climb a moderate grade for until it reached a split of two mountain ravines which were cleverly crossed by building a fill and having the tracks ascend a 220-degree curve known as Horseshoe Curve that limited the grade to less than 2 percent. The crest of the mountain would be penetrated by the Gallitzin Tunnels, from which the route descended by a more moderate grade to Johnstown. The western end of the line was simultaneously built from Pittsburgh, eastward along the Allegheny and Conemaugh rivers to Johnstown, while the eastern end was built from Harrisburg to Altoona. In 1848, the Pennsy contracted with the Harrisburg, Portsmouth, Mountjoy and Lancaster Railroad (HPMtJ&L) to buy and use equipment over both roads, providing service from Harrisburg east to