Highway Systems Incorporated is an AISC Certified Steel Fabricator located in the State of Florida. We manufacture Overhead Steel Sign Structures, Tolling Gantry Structures, Mast Arms, Sign Arms, Bridge Mounts, custom brackets, multi-post assemblies, and all types of miscellaneous steel fabrication. We are AWS D1.1/D1.5 certified and can provide your company with Quality Steel products whether it is custom or plan designed. We look forward to providing you with a quality product and great customer service. At Highway Systems Inc. our customers are our number one priority. Products: DOT Overhead Steel Sign Structures DOT Handrail DOT Bridge Mounts Sign Supports Custom Steel Fabrication Simple Steel Bridges Bridge Components AISC Certified AWS D1.1, D1.5 Steel Strain Poles Mast Arm Assemblies.