description Liberty Tunnel Overview
The Liberty Tunnels are a pair of twin-bore vehicular tunnels located in Pittsburgh, Pennsylvania, that pass through Mount Washington. Opened in 1924, the tunnels measure over a mile in length and were among the longest automobile tunnels in the United States upon their completion. They carry Route 51 and serve as a critical transportation link between downtown Pittsburgh and the southern suburbs. The construction of the tunnels also necessitated the creation of a separate ventilation system to manage vehicle exhaust.
help Liberty Tunnel FAQ
Where are the Liberty Tunnels located?
The Liberty Tunnels are a pair of twin-bore vehicular tunnels located in Pittsburgh, Pennsylvania. They pass directly through Mount Washington to connect the South Hills to the city center.
When did the Liberty Tunnels open to traffic?
The tunnels were officially opened in 1924. At the time of their completion, they were among the longest automobile tunnels in the United States.
How long are the Liberty Tunnels in Pittsburgh?
The tunnels measure well over a mile in length for each bore. This massive engineering project was necessary to allow massive traffic volume to bypass the steep slopes of Mount Washington.
Who built the Liberty Tunnels?
The tunnels were constructed by the Pittsburgh Department of Public Works using drilling and blasting techniques. Their completion directly spurred the residential development of the South Hills suburbs in the 1920s.
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