Replacing earlier bridges to the north, the viaduct complemented the flood control levees proposed in the Kessler Plan. The viaduct, the winning entry in a design competition, is composed of fifty-one concrete arches, one of the longest such structures built at the time. At the west end of the viaduct, Lake Cliff Park (1906; 300 block of E. Colorado Boulevard) was an amusement park built by Charles Mangold and John Zang to attract new residents to Oak Cliff. Landscaping with an irregular-shaped lake and picturesque groups of trees was designed in 1944 by Hare and Hare.