• Photo of Lemon House, Level #6, and Engine House on a beautiful summer day.

    Allegheny Portage Railroad

    National Historic Site Pennsylvania

Air Quality

Located at the summit unit of Allegheny Portage Railroad NHS is an air monitoring station which collects rain and snowfall to measure acidic and mercury air pollutants. Precipitation is collected weekly and analyzed by the PA Atmospheric Deposition Monitoring Network and the National Atmospheric Deposition Program's Mercury Deposition Network. Results are published in annual reports.

Did You Know?

Wire Rope

John A. Roebling of Brooklyn Bridge fame got his business start with the Allegheny Portage Railroad. His wire rope was used on each of the 10 inclines. It also was used for suspension aquaducts on the Mainline Canal.