Fla. Stat. § 348.758

The department may be appointed by the authority as its agent for the purpose of constructing improvements and extensions to the Central Florida Expressway System and for its completion. In such event, the authority shall provide the department with complete copies of all documents, agreements, resolutions, contracts, and instruments relating thereto and shall request the department to do such construction work, including the planning, surveying, and actual construction of the completion, extensions, and improvements to the Central Florida Expressway System and shall transfer to the credit of an account of the department in the State Treasury the necessary funds, and the department may proceed with such construction and use the funds for such purpose in the same manner that it is authorized to use the funds for the construction of roads and bridges.