Liberty Tunnel

Liberty Tunnels
Traffic flowing through the Liberty Tunnels
Overview
Other name(s)Liberty Tubes
LocationMt. Washington, Pittsburgh, Pennsylvania
Coordinates40°25′45″N 79°59′58″W / 40.429055°N 79.999419°W / 40.429055; -79.999419
Operation
Opened1924
CharacterTwin Horseshoe Profile road tunnels
Technical
Length5,889 feet (1,795 m)
No. of lanes4
Tunnel clearance13 ft 6 in (4.11 m)
Liberty Tunnels south end in 2004

The Liberty Tunnels (also known as the Liberty Tubes) are a pair of tunnels located in Pittsburgh, Pennsylvania, United States that allow motorists to travel between the South Hills of Pittsburgh and the city, beneath Mt. Washington. The tunnels were vital in the expansion of the South Hills suburbs by providing a direct route to the city, eliminating the time-consuming task of navigating around or over Mt. Washington and its inclines. Opening in 1924, the Liberty Tunnels are the longest automobile tunnel in the City of Pittsburgh.