Illinois Archives » Clark Dietz, Inc.

Side view of an existing County Line Road bridge over a waterway, with concrete supports, metal guardrails, and grassy banks.

County Line Road Phase I Study: IL Route 1 to IL Route 50

Local + County Roads, Public Involvement, Structural + Bridges, Transportation

County Line Road Phase I Study: IL Route 1 to IL Route 50Hannah Soukup2026-10-14T12:46:56-05:00

Two railroad tracks curve across Central Avenue at street level, with raised crossing gates, warning lights, and railroad crossing signs.

Central Avenue at BRC Grade Separation Study

Local + County Roads, Public Involvement, Traffic Engineering

Central Avenue at BRC Grade Separation StudyHannah Soukup2026-10-12T14:03:03-05:00

Aerial view of crews placing concrete on the York Road bridge deck while vehicles use adjacent lanes separated by concrete barriers above the I-88 ramps.

York Road Bridge Reconstruction over I-88 Ramps

Construction Engineering, Highways + Interstates, Local + County Roads, Structural + Bridges

York Road Bridge Reconstruction over I-88 RampsHannah Soukup2026-10-09T15:13:24-05:00

Aerial rendering of a proposed East Side Highway interchange, showing an elevated highway crossing an existing interstate with connecting ramps amid farmland.

East Side Highway Environmental Assessment

Highways + Interstates, Structural + Bridges, Traffic Engineering

East Side Highway Environmental AssessmentHannah Soukup2026-10-09T14:26:06-05:00

Newly applied gray bridge deck overlay on I-88, with construction barrels separating the work area from traffic.

Reagan Memorial Tollway Rehabilitation: Washington Street to York Road

Construction Engineering, Highways + Interstates, Structural + Bridges

Reagan Memorial Tollway Rehabilitation: Washington Street to York RoadHannah Soukup2026-10-08T14:34:21-05:00

Vehicles cross Plainfield Road bridge beside concrete barriers separating traffic from the adjacent construction area.

Plainfield Rd. Bridge Replacement over I-294 and Flagg Creek

Construction Engineering, Highways + Interstates, Structural + Bridges

Plainfield Rd. Bridge Replacement over I-294 and Flagg CreekHannah Soukup2026-10-08T12:28:51-05:00

Aerial image of IL 62 at IL 68 (Kane and Cook Cos., IL).

IL 62 Corridor Study: IL 25 to IL 68

Highways + Interstates, Public Involvement, Traffic Engineering, Transportation

IL 62 Corridor Study: IL 25 to IL 68Hannah Soukup2026-10-08T11:10:55-05:00

Aerial image of I-57 at I-74 Interchange in Champaign County, Illinois.

I-57 at I-74 Interchange Phase III

Construction Engineering, Highways + Interstates, Structural + Bridges

I-57 at I-74 Interchange Phase IIIHannah Soukup2026-10-07T14:12:27-05:00

Construction crews guide a force main pipe into an excavated trench using an excavator and drilling equipment.

Lost Bridge Force Main

Award Winner, Construction Engineering, Municipal Engineering, Wastewater

Lost Bridge Force MainHannah Soukup2026-10-06T15:09:15-05:00

Incobrasa Industries solar panels

Incobrasa Plant Expansion

Electrical, Site/Civil, Stormwater, Structural + Bridges

Incobrasa Plant ExpansionHannah Soukup2026-10-02T10:05:51-05:00

First Street Bridge Deck Overlay Design

First Street Bridge Deck Overlay Design

Construction Engineering, Local + County Roads, Municipal Engineering, Structural + Bridges

First Street Bridge Deck Overlay DesignHannah Soukup2026-10-07T15:10:57-05:00

Park Avenue Bridge Rehabilitation

Park Avenue Bridge Rehabilitation

Construction Engineering, Local + County Roads, Municipal Engineering, Structural + Bridges

Park Avenue Bridge RehabilitationHannah Soukup2026-10-07T15:10:31-05:00

Brush Hill Road Reconstruction

Brush Hill Road Construction Services

Construction Engineering, Local + County Roads, Municipal Engineering

Brush Hill Road Construction ServicesHannah Soukup2026-10-07T12:26:05-05:00

US 20 at Harmony Road roundabout

US-20 at Harmony Road Intersection Improvements

Highways + Interstates, Public Involvement, Traffic Engineering, Transportation

US-20 at Harmony Road Intersection ImprovementsHannah Soukup2026-10-02T11:09:14-05:00

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

County Highway 21 Bridges over Lake Fork Creek and Tributaries

Highways + Interstates, Local + County Roads, Structural + Bridges, Transportation

County Highway 21 Bridges over Lake Fork Creek and TributariesHannah Soukup2026-10-07T12:24:48-05:00

Aerial photo of Longmeadow Parkway under construction. Half of the road is closed for construction.

Longmeadow Parkway (Contract C3) IL 25 Improvements

Award Winner, Construction Engineering, Highways + Interstates, Local + County Roads

Longmeadow Parkway (Contract C3) IL 25 ImprovementsHannah Soukup2026-10-07T12:20:31-05:00

Tent campground after

Red Hills State Park Improvements and Campground Upgrades

Drinking Water, Wastewater

Red Hills State Park Improvements and Campground UpgradesHannah Soukup2026-10-07T12:19:38-05:00

Curtis road

Curtis Road Construction

Award Winner, Local + County Roads, Municipal Engineering, Transportation

Curtis Road ConstructionHannah Soukup2026-10-02T12:38:12-05:00

Zahnd Park after construction.

Zahnd Park Accessibility Improvements

Construction Engineering, Stormwater, Transportation

Zahnd Park Accessibility ImprovementsHannah Soukup2026-10-02T12:57:15-05:00

This image shows an industrial boiler or mechanical system, complete with control panels, pressure regulators, and piping.

Central Plant Electrical and Mechanical Improvements

Electrical, Mechanical

Central Plant Electrical and Mechanical ImprovementsHannah Soukup2026-10-02T12:57:59-05:00

This image shows a bridge construction site where workers in high-visibility gear and hard hats are actively engaged in pouring and smoothing concrete over a reinforced steel rebar structure.

I-80 at Wheeler Avenue and at River Road, Phase III

Construction Engineering, Highways + Interstates, Local + County Roads

I-80 at Wheeler Avenue and at River Road, Phase IIIHannah Soukup2026-10-02T12:58:21-05:00

This image shows a wastewater treatment facility, specifically an aeration or sedimentation basin. The presence of bubbling or flowing water indicates active treatment, likely part of the biological treatment phase where microorganisms break down contaminants.

Village of St. Joseph Wastewater Treatment Plant Expansion

Municipal Engineering, Wastewater

Village of St. Joseph Wastewater Treatment Plant ExpansionHannah Soukup2026-06-05T12:12:20-05:00

This image captures a wet paved pathway next to a fenced-off area, possibly near a highway construction site.

Illinois Tollway, I-294, Flagg Creek WRD Sewer Relocation

Transportation, Wastewater

Illinois Tollway, I-294, Flagg Creek WRD Sewer RelocationHannah Soukup2026-06-05T12:11:54-05:00

Before and after of the roadwork.

Pheasant Lane Improvements

Local + County Roads, Municipal Engineering, Stormwater, Transportation

Pheasant Lane ImprovementsHannah Soukup2026-10-02T13:08:08-05:00

This image captures a bridge construction project at night, showing a large steel girder being hoisted into place by a yellow crane.

Illinois Tollway, I-55 Ramp A over I-294 Construction

Construction Engineering, Highways + Interstates

Illinois Tollway, I-55 Ramp A over I-294 ConstructionHannah Soukup2026-10-02T13:10:12-05:00

This image shows an active construction site with heavy machinery, including a Komatsu excavator and a front-end loader, working near a building.

Mattoon WWTP UV Disinfection Addition

Electrical, Municipal Engineering, Wastewater

Mattoon WWTP UV Disinfection AdditionHannah Soukup2026-10-02T13:10:31-05:00

Image of the completed construction.

Meadowlark Bridge Replacement and Drainage Study

Local + County Roads, Municipal Engineering, Stormwater, Structural + Bridges, Transportation

Meadowlark Bridge Replacement and Drainage StudyHannah Soukup2026-10-02T13:19:49-05:00

Image of Garden Hills neighborhood, Champaign, IL, completed detention basin with red bridge

Garden Hills Drainage and Lighting Improvements

Construction Engineering, Electrical, Municipal Engineering, Stormwater, Structural + Bridges, Transportation

Garden Hills Drainage and Lighting ImprovementsHannah Soukup2026-10-05T08:21:13-05:00

Aerial view of a wastewater treatment plant.

WWTP Nutrient Removal Study

WWTP Nutrient Removal StudyHannah Soukup2025-07-24T16:33:19-05:00

Downtown alley with lighting improvements.

Downtown Alley Improvements and Beautification

Local + County Roads, Municipal Engineering, Transportation

Downtown Alley Improvements and BeautificationHannah Soukup2026-10-02T13:23:01-05:00

After image of the 2020 Concrete Street Improvement Project

Concrete Street Improvements Project

Construction Engineering, Local + County Roads, Municipal Engineering, Transportation

Concrete Street Improvements ProjectHannah Soukup2026-10-02T13:23:24-05:00

Power Generation Plant

Power Generation Plant Fire Protection

Construction Engineering, Electrical, Mechanical

Power Generation Plant Fire Protectionclarkdietz2026-10-02T14:38:45-05:00

Rockford College of Medicine: Exterior

College of Medicine Boiler and Chiller Replacements

Electrical, Mechanical

College of Medicine Boiler and Chiller Replacementsclarkdietz2022-03-21T21:04:34-05:00

Fire Stations 15 and 16: Truck Bay

Fire Stations 15 and 16: MEP and Civil Services

Electrical, Mechanical, Site/Civil, Stormwater

Fire Stations 15 and 16: MEP and Civil Servicesclarkdietz2026-10-02T14:40:06-05:00