Sec. 24. (a) The contract for an improvement must be for the entire improvement.
(b) After the execution of a contract for an improvement, the validity of the contract may be questioned only in an action to enjoin the performance of the contract. This action must be brought:
(1) before the actual commencement of work under the contract, for an improvement by a county; or
(2) before the later of the following, for an improvement by a municipality:
(A) The actual commencement of work under the contract.
(B) Not later than ten (10) days after the execution of the contract.