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The Avenue 17 Grade Separation is one of the latest construction sites to break ground this year. Located between Lake Street and Road 28 ½ in Madera County, crew members have been busy on the foundations and substructure on both sides of the existing train tracks. The future grade separation will be more than 614-feet long and 43-feet wide. Once complete, the grade separation will carry traffic over the future high-speed rail lines and BNSF tracks.