Iowa Code § 308A.3: Certain elevated structures prohibited — exception.

Bikeways and walkways approved as either incidental features of highway construction projects primarily for motor vehicular traffic or as an independent bikeway or walkway construction project constructed pursuant to the Highway Act of 1973, 23 U.S.C. §217, shall not be constructed as elevated structures joining private buildings or so constructed to provide elevated access or egress facilities to private buildings unless the portion of project funds that is necessary to obtain federal funds is provided by private parties benefited by the facilities.