Central State Resources Office:(210) 651-0998 Fax:(210) 651-1334 17304 Bell North Dr Schertz, TX 78154 ABOUT US OUR WORK PROJECTS CONTACT About Us Central State Resources, LLC. (CSR) is a premier Railroad Design and Construction Company whose principals have more than thirty years experience individually in the railroad construction industry. CSR is located near San Antonio, Texas and is very actively engaged in railroad design and construction relating to both commercial and oilfield industries on a national basis. © 2021 Central State Resources, LLC