Iowa Code Title VIII. Transportation [Chs. 306-330B] § 313.22. Paving of whole street by department

Any city and the department may enter into an agreement with respect to any project for the paving of any portion of a primary road extension, and for the construction, reconstruction, and improvement of storm sewers and electrical traffic control devices reasonably incident and necessary thereto, within such city.  Said agreement shall specify that the city shall pay for that portion of the cost of said project which is not payable out of primary road funds, and may authorize the department to advertise for bids, let contracts, and supervise the construction of that portion of said project to be paid for by the city.  Such agreement shall be a valid and binding obligation on the parties thereto.