IDOT Archives » Clark Dietz, Inc.

Mattis Ave construction

Mattis Avenue Bridge Replacements over I-74 and I-57, Champaign Co., IL

Construction Engineering, Highways + Interstates

Mattis Avenue Bridge Replacements over I-74 and I-57, Champaign Co., ILHannah Soukup2026-09-24T14:13:36-05:00

US 20 at Harmony Road roundabout

US 20 at Harmony Road Intersection Improvements

Public Involvement, Transportation

US 20 at Harmony Road Intersection ImprovementsHannah Soukup2026-09-24T14:10:07-05:00

Clark Dietz designed three replacement bridges on County Highway 21 in Macon County

County Highway 21 Bridges over Lake Fork Creek and Tributaries

Local + County Roads, Structural + Bridges

County Highway 21 Bridges over Lake Fork Creek and TributariesHannah Soukup2026-09-24T14:09:58-05:00