Whenever assessments levied for any city improvements are challenged by court action and such action delays the payment of temporary notes issued to finance such improvements, causing unanticipated additional interest on said notes, the governing body is authorized to assess against the city at large and issue bonds for the payment of the amount of such interest and the amount, if any, representing the difference between the amount of the challenged assessment and the amount finally assessed against the property.
K.S.A. 10-114a