Ruto signed the bills at Homa Bay State Lodge ahead of the official opening of this year's Devolution Conference, which marks 12 years of devolved governance.
Senate Speaker Amason Kingi, Homa Bay Governor Gladys Wanga, and Solicitor General Shadrack Mose attended the signing.
The conference has brought together governors, legislators, and other stakeholders to discuss the successes and challenges of devolution.
Speaking during a panel discussion at the start of the conference, Migori Governor Ochillo Ayacko said counties are struggling with limited resources.
"We have inadequate resources, which is why we can't do some roads. In Migori alone, for instance, we need about Sh10 billion for roads."
Nominated Senator Catherine Muma blamed part of the problem on poor governance and corruption in some counties.