Conn. Gen. Stat. § 13a-143

No commercial establishment shall be constructed or located within the right-of-way of, or on publicly owned or publicly leased land acquired or used for or in connection with, a limited access state highway, provided nothing herein shall be construed to divest the commissioner or any other state agency of the power exercised on October 1, 1959, with respect to service facilities under lease on said date along the Merritt Parkway, the Wilbur Cross Parkway or the Wilbur Cross Highway or to prevent the completion of any service facility on which construction has begun or for the construction of which a contract has been let prior to said date, nor shall anything herein be construed to prevent the commissioner or any other state agency from constructing and leasing service facilities along the Governor John Davis Lodge Turnpike.