All acts or proceedings irregularly done or had, by any board of county commissioners and the state highway commission, prior to February 13, 1929, for the acquisition of any land to constitute part of any state highway, or for any state highway purpose, whether acquired by purchase or condemnation, either voluntarily by such board of county commissioners, or upon motion, request, or petition of the state highway commission, and the issuance of any warrant by any county auditor, and the payment thereof by any county treasurer, pursuant to such acts and proceedings, are hereby confirmed, ratified, and declared legal the same as if such acts and proceedings had been done according to law.