We just received this information from Downtown Dallas, Inc.
"The parade starts at 11:15 a.m. on Houston Street and Main Street. It travels east on Main Street, south on Ervay Street, west on Young Street, south on Akard Street and east on Marilla Street across City Hall Plaza. Road closures related to this special event will impact traffic around City Hall Plaza and the Central Business District."
http://vetsdayindallas.org/plans.htm