Engineers Honor Ventilation System at Liberty Tunnels - Pittsburgh Union Progress

Engineers honor ventilation system at Liberty Tunnels - Pittsburgh Union Progress

You’d think boring twin tunnels 5,889 feet through Mount Washington would be the most challenging aspect of building the Liberty Tunnels in the early 1920s. You’d be wrong. The tunnels themselves were a grand achievement, and although this one was the longest pair built only for automobiles when it opened, tunnels had been built before. The bigger challenge for the design team led by civil engineer Almos D. Neeld was that the length of the tunne…

PennDOT and American Society of Civil Engineers Recognize Liberty Tunnels Ventilation System as a Historic Landmark - Beaver County Radio

(File Photo of the PennDOT logo) Noah Haswell, Beaver County Radio News (Pittsburgh, PA) According to a release from PennDOT District 11, (PennDOT) Secretary Mike Carroll was joined yesterday by regional and transportation-industry leaders for a dedication ceremony to recognize the Liberty Tunnels Ventilation System as an American Society of Civil Engineers (ASCE) National Historic Civil Engineering Landmark (NHCEL) in the City of Pittsburgh. Th…