Skip to content

Klingner & Associates P.C.

Klingner & Associates P.C.


About Us

Klingner & Associates, PC offers a wide-range of professional services including civil engineering, mechanical/electrical engineering, environmental engineering and structural engineering, as well as architecture, interior design, planning, and land surveying and geotechnical/construction material testing services. Our firm has had the privilege in assisting individuals, industrial and commercial businesses, municipalities, primary/secondary and higher educational, and government agencies throughout Illinois, Missouri and Iowa.

Projects designed by the firm have received awards from the American Society of Civil Engineers, Consulting Engineers Council of Illinois, American Consulting Engineers Council, Structural Engineer's Association of Illinois, Illinois Capital Development Board, Iowa Main Street, Steel Plate Fabricators Association, Iowa Ready Mixed Concrete Association and State, Regional and National Environmental Protection Agencies.

Klingner & Associates P.C. has eight regional offices throughout Illinois, Iowa, and Missouri to serve our clients:

Quincy - Galesburg - Carbondale | Burlington - Pella - Davenport | Columbia - Hannibal


Transportation - Shinn Lane Roundabout
Water Resources - Ottawa Township Highschool Floodwall
Site Development & Parking
Structural - Mauvaise Terre Creek Bridges
Water Resources - Beartstown Pump Station
Structural - ACHD Cannonball Bridge
Water & Sewer - Ralls County Water Treatment Plant
Water & Sewer - Ralls County Water Treatment Plant
Site Design - Salvation Army Building
Transportation - Roadways & Trails
Transportation - Klinger Multi-Use Trail in Qunicy
Site Development - Industrial Facilities
Environmental Engineering - Wetland Delineations
Environmental - NEPA Study and Reviews
MEP - Bridge Lighting
Structural Engineering - Building Frames & Foundations
Architecture & Interior Design - Salvation Army Building
Site Development & Architecture - Lincoln Douglass School
Architecture & MEP- Lincoln Douglass School
Architecture - Community College
Architecture & MEP - Community College Interior
Interior Design
Materials Testing - Concrete Cylinders
All-terrain Geotechnical Rig
Klingner Drill Rigs

Rep/Contact Info

Card image cap
Sean C. Henry, P.E.
Regional Branch Manager