Amends the Cornelius Town Charter, SL 1971-288, authorizing Cornelius to contract for the design and construction of public projects using design-build or other specified delivery methods. Sets forth procedures for requesting proposals, awarding contracts, and paying costs. Further amends the charter to authorize Cornelius to invest and reinvest any restricted or unrestricted fund balance accounts and any capital reserves in the securities or investments authorized by state law as specified.