Fla. Stat. § 348.61
The department may be appointed by the authority as its agent for the purpose of constructing, reconstructing, improving, extending or repairing the expressway system. 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 involved and shall transfer to the credit of an account of the department in the Treasury of the state the necessary funds therefor. The department shall thereupon be authorized, empowered and directed to proceed with such construction work and to use the said funds for such purpose and in the same manner that it is now authorized to use the funds otherwise authorized by law for its use in construction of roads and bridges.
Fla. Stat. § 348.61