P67, P68, P69, P71, P76 and P78. East of the station is a bus layover area and the East Liberty Garage used by routes 1, 6, 11, 15, 19L, 29, 31, 39, 40, 44 and G31. These routes serve the Penn Station busway stops immediately before going out of service and are the first stops they make as they go into service. Routes 86, 87, 88 and 91 stop just outside of the station on Liberty and Penn Avenues. There is also a seldom used light rail station at the site. It opened in 1988 with regular shuttle service to Steel Plaza station, as well as two afternoon rush-hour trains on the 42S (now the Red Line). However, the station was difficult to integrate into other services, since it used a single-tracked former Pennsylvania Railroad tunnel. This tunnel travels beneath the US Steel Tower, and the building's structural supports are on each side of the tunnel, prohibiting the installation of a second track. The shuttle service was discontinued in 1993, but the two 42S afternoon rush-hour trains continued to serve the station until 2007. Since 2007, the station has seen occasional use, mostly for charters or special events, such as part of the agency's detoured transportation routes following Super Bowl XLV on February 6, 2011 and as part of the "Railvolution" transit convention in October 2018. Pittsburgh Regional Transit bus connections 1 – Freeport Road 6 – Spring Hill 11 – Fineview 15 – Charles 19L – Emsworth Limited 29 – Robinson 31 – Bridgeville 39 – Brookline 40 – Mount Washington 44 – Knoxville 86 – Liberty 87 – Friendship 88 – Penn 91 – Butler Street G31 – Bridgeville Flyer P1 – East Busway All Stops P2 – East Busway Short P7 – McKeesport Flyer P10 – Allegheny Valley Flyer P12 – Holiday Park Flyer P13 – Mount Royal Flyer P16 – Penn Hills Flyer P17 – Lincoln Park Flyer P67 – Monroeville Flyer P68 – Braddock Hills Flyer P69 – Trafford Flyer P71 – Swissvale Flyer P78 – Oakmont Flyer Suburban transit connections Beaver County Transit Authority Route 1 Butler Transit Authority Fayette Area Coordinated Transportation Commuter New Castle Area Transit Authority Route 71 Washington City Transit Washington-Pittsburgh Westmoreland County Transit Authority All Pittsburgh Routes except Route 4 Intercity bus connections Grant Street Transportation Center Across the street is the Grant Street Transportation Center. It serves as