Crossties; turnout ties; grade-crossings. KSA is a joint venture between Koppers and Hanson-Lehigh to produce and market concrete crossties, switch/turnout ties and grade crossings. KSA prestressed mono-block concrete crossties are manufactured to conform to the requirements of AREMA Chapter 30. Tie designs are available for mainline, yard, secondary and transit applications. Ties can be manufactured with commercially-available fastening systems and special inserts for restraining, guard and t
