Our Work : Markets

Highway, railroad, pedestrian, or utility. GRAEF designs bridge solutions to meet your needs.

Del Prado Bridge, FL Hoan Bridge, Milwaukee, WI Willowood Bridge, Palatine, IL Claude Allouez, DePere, WI
GRAEF offers a wide range of bridge services for highway, railroad, pedestrian, and utility bridges. Our services vary from structural consulting and maintenance inspections to complete project management.

Design and Rehabilitation
The GRAEF staff has the background to design single or multiple span bridges, with structural systems that best meet your site’s requirements. We have designed bridges over small streams for local townships and architectural or commercial clients, grade separation structures for state and federal agencies, and bridges over railroads and large rivers for municipalities.

GRAEF embraces the challenge of inspecting and designing repairs or reinforcements for older bridges that sometimes require an artful blend of old and new structural systems. We do this while paying attention to aesthetics, budgets, and public concerns.


GRAEF has inspected many bridges for state inspection programs in Wisconsin and  Illinois, more than 800 of which included load ratings. In addition, our PONTIS Bridge Management System inspectors are available to provide this specialized inspection.

Hoan Bridge Reconstruction Project

Hoan Bridge

Complex Hoan Bridge and Lake Freeway reconstruction project.
Bridges Over USH 41 and USH 45, Washington County

STH 145 Construction Inspection

Construction inspection of 5 roundabouts & 2 bridges.
Fannie Road over Dead Lake Bridge

Fannie Road Bridge

Repairing a structurally deficient bridge.

Hoan Bridge Inspection

Hoan Bridge Inspection

In-depth inspection of the Hoan Bridge.
Claude Allouez Bridge and Roundabout

Claude Allouez Bridge

Claude Allouez Bridge & Roundabout
Del Prado Boulevard Bridges

Del Prado Boulevard Bridges

Five bridges in Florida.

Burt Naumann,Principal - Milwaukee Burt Naumann
Principal - Milwaukee
414/ 266-9022
John Zerfas,Principal - Chicago O'Hare John Zerfas
Principal - Chicago O'Hare
773 / 399 0112
Scott Hinrichs,Principal - Orlando Scott Hinrichs
Principal - Orlando
407 / 659-6533