During the Alexandria Sesquicentennial in 1899, several Alexandria civic boosters called for a bridge to be built between Alexandria and Washington, DC. This reignited interest in a roadway to Mount Vernon. The idea generated interest among many of the individuals active in the City Beautiful movement, Colonial Revival architecture movement, and groups dedicated to promoting local and national history. Soon, the idea of a roadway became a call for a grandiose, monumental avenue lined with Beaux-Arts memorials, tombs, and roadside attractions. The idea received even more impetus when the Daughters of the American Revolution took up the cause. In 1902, the McMillan Plan endorsed a road along the Virginia side of the Potomac River shoreline. Although Virginia was outside the plan's scope, the Senate Park Commission (which drafted the plan) saw a Mount Vernon avenue as an extension of the DC park system as well as a means of protecting the Great Falls of the Potomac River and the Potomac Palisades. The McMillan Plan, however, focused not on a monumental avenue but on tree-lined boulevards and quiet carriage paths designed to relax and calm.