Map 1: The Pennsylvania Main Line
of Public Works.
(National Park Service)
Canals were constructed on relatively level areas and usually followed the courses of rivers.
Questions for Map 1
1. Identify the route of the Allegheny Portage Railroad. Name the two cities at the east and west ends of the railroad. Using the scale provided, calculate the distance of the Allegheny Portage Railroad.
2. What obstacles would have prevented a canal from being built across the state?
3. Identify the route of the Pennsylvania Main Line of Public Works, the system of canals and connecting railroads that was built across Pennsylvania. How were obstacles overcome by the canal engineers?
* The map on the screen has a resolution of 72 dots per inch (dpi), and therefore will print poorly. You can obtain a high quality version of Map 1, but be aware that it may take as much as two minutes to load with a 28.8K modem.