to the third floor of the Art Institute's West Pavilion. The bridge design by Renzo Piano, the architect of the Modern Wing, was inspired by the hull of a boat. The Nichols Bridgeway is approximately long and wide. The bottom of the bridge is made of white, painted structural steel, the floor is made of aluminum planking and the tall railings are steel set atop stainless steel mesh. The bridge features anti-slip walkways and heating elements to prevent the formation of ice. It meets standards for universal accessibility, as required by the Americans with Disabilities Act of 1990 (ADA). The bridge is named after museum donors Alexandra and John Nichols. Budget During development and construction of the park, many structures were added, redesigned or modified. These changes often resulted in budget increases. For example, the bandshell's proposed budget was $10.8 million. When the elaborate, cantilevered Gehry design required extra pilings to be driven into the bedrock to support the added weight, the cost of the bandshell eventually spiraled to $60.3 million. The cost of the park, as itemized in the following table, amounted to almost $500 million. Mayor Daley at first placed much of the blame for the delay and cost overrun on Frank Gehry, who designed the pavilion and its connecting bridge; Daley's office later apologized to the architect. A 2001 investigative report by the Chicago Tribune described the park then under construction and its budget overruns as an "expensive public-works debacle that can be traced to haphazard planning, design snafus and cronyism". According to Lois Weisberg, commissioner of the Department of Cultural Affairs, and James Law, executive director of the Mayor's Office of Special Events, once the full scope of the project was finalized the project was completed within the revised budget. Use Millennium Park had 3 million visitors in its first year; annual attendance was projected to grow to between 3.31 and 3.65 million by 2010. According to Crain's Chicago Business, however, the park had about 4 million visitors in 2009. In addition to the different uses detailed for each of the permanent features (above), the park has hosted some other notable events, including the annual Grant Park Music Festival, and two temporary pavilions to mark the centennial of Daniel Burnham's 1909 Plan of Chicago. Millennium Park has also been featured in several films and television shows. Grant Park Music Festival The Grant Park Music Festival (formerly