Commissioner of Highways; certain agreements with the U.S. Department of Transportation; National Environmental Policy Act. Authorizes the Commissioner of Highways to enter into agreements for a term of five years with the U.S. Department of Transportation, as provided for in federal law, regarding state assumption of responsibility for categorical exclusions and the Surface Transportation Project Delivery Program. The bill authorizes the Department of Transportation to assume certain responsibilities of the U.S. Secretary of Transportation pursuant to such agreement. Under the bill, the Commonwealth waives its immunity from civil suit in a federal court under certain circumstances. The bill contains an expiration date of five years after the date on which the first agreement is entered into.