Iowa Code § 306A.10
Whenever the state department of transportation, a city, or a county determines that relocation or removal of any utility facility now located in, over, along, or under any highway or street, is necessitated by the construction of a project on routes of the national system of interstate and defense highways including extensions within cities or on streets or highways resulting from interstate substitutions in a qualified metropolitan area under Tit. 23, U.S.C., the utility owning or operating the facility shall relocate or remove the facility in accordance with statutory notice. The costs of relocation or removal, including the costs of installation in a new location, shall be ascertained by the authority having jurisdiction over the project or as determined in condemnation proceedings for such purposes and may be paid from participating federal aid or other funds.
Iowa Code § 306A.10