 By midafternoon on 23 March, all three regiments of the 5th Infantry Division were in the bridgehead, and an attached regiment from the 90th Infantry Division was crossing.Tanks and tank destroyers had been ferried across all morning, and by evening a Treadway bridge was open to traffic.By midnight, infantry units had pushed the boundary of the bridgehead more than inland, ensuring the unqualified success of the first modern assault crossing of the Rhine.