JF Ahern is a mechanical and fire protection contractor that's lasted 140 years in Fond Du Lac, Wis. The company was named ENR Midwest Specialty Contractor of they Year, in part, because it worked on projects in 10 of ENR Midwest’s 11 states last year.
Contractor of the Year Turner Construction Co. excels at meeting client demands on tough projects such as reconstructions and data centers across the Midwest.