 Iron Horse RV and Trailers, new location, Louisville Highway, just north of Highway 20. Give Bridger a call today, 208-604-6618. 208-604-6618. KID News Radio Studio, powered by Iron Horse RV and Trailers in Rexburg. Off exit 322, Highway 20, Rexburg. When the journey matters. Iron Horse RV, online 24-7 at ironhorserviantrailers.com.