The City of San Antonio is spending $3 million to make the Riverwalk accessible to wheel chairs. Title II of the ADA requires that public places be accessible to persons with disabilities. The Department of Justice supposedly enforces Title II. The EEOC enforces a separate part of the ADA. It is long past overdue that the Riverwalk be fully accessible. But, most sidewalks in the older parts of all US cities are still not accessible. See DOJ summary.