Barton & Loguidice, P.C.

Beaver Concrete Construction

Berg & Associates, Inc.

Bridges & Towers, Inc.

Brookfiled Fabricating Corp.

City of Los Angeles

City of Richmond

Delaware River and Bay Authority

Dewberry & Davis

Dick Corporation

Griffith Company

High Steel Structures, Inc.

Hurtt Fabricating Corp.

Illinois Department of Transportation

Kentucky Transportation Cabinet

Key-Tech, Keyport,NJ

Kiewit Pacific Co

KTA-Tator, Inc.

Littell Steel Company

Lubrite Technologies, Inc.

Maine Department of Transportation

Maryland QC Lab

Maryland State Highway Administration

Massachusetts Highway Department

Michael Baker Jr., Inc.

Modjeski and Masters, Inc.

Montana Department of Transportation

New Jersey Turnpike Authority

New York State Thruway Authority

Non-Destructive Testing  Group

North Carolina
Department of Transportation

Northwest Pipe Company

Ohio Turnpike Commission

Oneida County
Department of Public Works

Onondaga County
Department of Transportation

On-Site Technical Services, Inc.

Oregon Department of Transportation

PennSummit Tubular

Pennsylvania
Department of Transportation

Pres-T-Con

PricewaterhouseCoopers

RBKA Engineering and Construction Services

SAI Consulting Engineers, Inc.

San Diego Water Authority

Shenandoah Steel Corporation

Sigma Industries

Stony Brook Manufacturing Co., Inc.

STV Inc

Swank Associated Companies

Tennessee Department of Transportation

Texas Department of Transportation

The Port Authority of New York
and New Jersey

Tioga Construction Co., Inc

TRC Environmental Corporation

Valmont Structures, Inc.

Vector Construction Corporation

Virginia Department of Transportation

Weidlinger Associates, Inc.