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'''The Allegheny Portage Railroad''' was the section of the [[Pennsylvania Main Line of Public Works]] that traversed the Allegheny Mountains in [[Pennsylvania (U.S. state)|Pen

...ca]]. Constructed for the [[Allegheny Portage Railroad]] section of the [[Pennsylvania Main Line of Public Works]], it is located at a bend in the [[Little Conemaugh River]]. The tunnel b

...pike was completed, connecting Pittsburgh and Philadelphia. In 1829, the [[Pennsylvania Main Line of Public Works|Pennsylvania Main Line Canal]] began operations.<ref name="WQED">[http://ww