NEW YORK (Standard & Poor's) March 26, 2002ù Standard & Poor's said today it assigned its triple-'B'-minus rating to two Railway Bridge System Bonds guaranteed by leading U.S. railroad Union Pacific Corp. The series 2002 bonds are slated for the Kansas City Terminal Highline Project and are due Oct. 1, 2022. One industrial revenue bond is for $40.1 million (Unified Government of Wyandotte County/Kansas City, Kansas); the other is for $16.8 million (Westside Intermodal Transportation Corp.). The ratings on the bonds mirror those for its guarantor. Standard & Poor's also affirmed its ratings for Omaha, Neb.-based Union Pacific, including the triple-'B'-minus corporate credit rating. The outlook is positive. "The ratings on Union Pacific reflect a strong competitive position as the