(a) It is in the public interest to allow local units of government to finance the costs of public improvements by levying special assessments against the property which benefits from the improvements. It also is in the public interest, following timely notice and the opportunity to protest the levying of special assessments at a public hearing, that all challenges to the validity of the special assessments or to the proceedings relating thereto be commenced and resolved in a prompt and timely manner in order to avoid delay and increased public expense for the public improvements.

(b) No suit, brought under any federal civil rights statute, to set aside any special assessments levied against property pursuant to the laws of this state or to otherwise question the validity of the proceedings relating thereto shall be brought after the expiration of 90 days from the publication of the ordinance, resolution or other order fixing the special assessments.