continued. Despite the opposition to the Olmsted plan, the city under Mayor Thomas Taggart purchased of land during the early 1900s, including much of what became Riverside Park. That park, however, had not been envisioned in Olmsted's plan. Construction of boulevards along the streams was also begun, with sections of Fall Creek Boulevard between Capitol and Central Avenues and of Pleasant Run Boulevard between Raymond and Beecher Streets being completed by 1906; boulevards along the east side of White River north of Michigan Street and through Riverside Park were also being built. George Kessler's plan By 1907 the Parks Board realized that it needed a new comprehensive plan, and from 1908 to 1915 it engaged George Edward Kessler as a consulting landscape architect. Kessler was already well-known, having created plans for Kansas City, Missouri, in 1892 and Cincinnati, Ohio, in 1907. He had also planned the grounds of the 1904 Louisiana Purchase Exposition in St. Louis, Missouri. Kessler had already been hired by the city to plan a boulevard system. In 1909, after a year of study, Kessler presented his Park and Boulevard Plan combining the ideals of the City Beautiful Movement with practical functionalility. That same year he helped to obtain the passage of a new state law that allowed the Parks Board to levy taxes for the purchase and improvement of parks. Kessler retained many of the elements of the Earnshaw and Olmsted plans, including the linear parks and boulevards along White River and Fall Creek. However, his plan was much more far-reaching in scope, encompassing all the open public land in the city. Parkways would follow the four major watercourses in the city - White River, Fall Creek, Pleasant Run, and Pogue's Run - taking advantage of the meandering streams, open vistas, and wooded areas that the city's geography afforded. Besides their aesthetic aspects, the parkways also helped prevent pollution of the waterways and provided flood control. Kessler's plan also linked the boulevards with major city streets, including Meridian Street, Washington Boulevard, and Maple Road (now 38th Street), with those streets also being beautified. Decorative stone-clad arched bridges spanning White River and Fall Creek are an important component of Kessler's plan. Several of these predate the plan, having been designed by City Engineer J. Clyde Power to replace existing iron bridges. Kessler himself designed a new bridge on Capitol Avenue over Fall Creek. By including all sections