The San Bernardino Line is a Metrolink line running between Downtown Los Angeles east through the San Gabriel Valley and the Inland Empire to San Bernardino, with limited express service to Redlands. It is one of the three initial lines (along with the Santa Clarita and Ventura Lines) on the original Metrolink system. As of August 2016, 20 trains run Los Angeles to San Bernardino on weekdays. It is the first of the seven Metrolink lines to run on both Saturday and Sunday, with 10 trains to San Bernardino on Saturdays and 7 on Sundays. Two Saturday and two Sunday trains would continue to the downtown Riverside station until July 5, 2014, when weekend service on the 91 Line began. Route After leaving Union Station and crossing the Los Angeles River, the line follows the San Bernardino Freeway and El Monte Busway until just after the Cal State L.A. station; it then runs in the median of the San Bernardino Freeway to the El Monte Station along the former route of the Pacific Electric Railway's San Bernardino Line. Starting at El Monte, the line parallels the Union Pacific's Sunset Route (ex-Southern Pacific) for a few miles before turning northeast at Bassett onto a Southern Pacific branch. At (a former Southern Pacific/Pacific Electric-Santa Fe crossing), it switches to the Santa Fe; from Claremont to just west of San Bernardino it follows what was the Santa Fe's Pasadena Subdivision (and before that the Second District of the LA Division, the Santa Fe passenger main line). From San Bernardino Depot, the line follows the Santa Fe's Redlands branch line towards Downtown Redlands. The San Bernardino Line is mostly single track with seven passing sidings and short sections of double track near Covina, between Pomona and Montclair, west of Fontana, and throughout San Bernardino. Expansion When the line opened on October 26, 1992, service extended only as far as Pomona. It was incrementally extended to Claremont that December, Montclair the following February, then finally to San Bernardino in May 1993. Saturday service was added in 1997 and Sunday service in 1998. San Bernardino Associated Governments (SANBAG) completed an environmental impact report (EIR) in 2015 to extend Metrolink service southeast from the current eastern terminus in San Bernardino to Redlands. The extension will follow the Redlands Subdivision and comprises two projects. The Downtown San Bernardino Passenger Rail Project extended Metrolink southeast one mile via double