Indiana Code Title 26. Commercial Law § 26-2-5-1

Sec. 1. (a) As used in this section, “construction or design contract” includes a design-build contract under which all of the following for the same project are included:

(b) All provisions, clauses, covenants, or agreements contained in, collateral to, or affecting any construction or design contract, except those pertaining to highway contracts, which purport to indemnify the promisee against liability for:

from sole negligence or willful misconduct of the promisee are against public policy and are void and unenforceable.  Sole negligence does not include vicarious liability, imputed negligence, or assumption of a nondelegable duty.