On July 23, 2003 PAT approved contracts for today) to build high-occupancy vehicle (HOV) ramps and modernized the tunnel, as well as provide a 172-space park-and-ride lot along Woodruff Street. The little-used HOV lane was opened on December 27, 2004, running from West Carson Street on the South Side and through the tunnel to Woodruff Street in Mt. Washington. The Fort Pitt Tunnel to the west and the Liberty Tunnels to the east carry nearly all of the vehicular traffic heading downtown.