Construction
Support Services inc.
Traffic Control Catered For You:
Safety Without Compromise
Construction
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Expert Traffic Solutions for Every Project
Welcome to Construction Support Services Inc. (CSS), a trusted traffic control company based in Toronto, Ontario. Proudly serving clients across the province, we deliver safe, professional, and dependable traffic management solutions. As a member of LIUNA 183, we’ve earned a strong reputation for reliability, expertise, and a deep commitment to safety.
At CSS, safety is the foundation of everything we do. Every one of our Traffic Technicians undergoes intensive training before ever stepping onto the road. This includes Book 7, POST, First Aid, 4 & 5 Steps, and Flagger certification — ensuring they are fully prepared to manage complex and dynamic job sites with confidence and precision. Our team brings a proactive, detail-oriented approach to every project to protect workers, motorists, and the public alike.
We offer a full range of services including seamless road permit coordination across the Greater Toronto Area, digitally detailed work zone layouts, full lane and road closures, pedestrian and work zone protection, and more. We are ISN Verified and certified through Avetta and Highwire, upholding high standards in compliance and safety.
At Construction Support Services, we manage the complex details — so you can work with confidence, knowing it’s all handled. As one of Toronto’s leading and cost-effective traffic management companies, we know that no two projects are the same. That’s why we offer tailored, end-to-end solutions designed to support your team from start to finish.
From handling road permit applications and digitally detailed work zone layouts, to overseeing on-site safety and ensuring every crew member and piece of equipment is cleared properly — we manage the details so you don’t have to. Whether you’re dealing with a full roadway closure or a high-traffic urban intersection, CSS is your trusted partner for safe, efficient, and hassle-free execution.
“Your Commute Home is More than Enough Traffic for One Day – Let us Take Care of the Rest”
Client Testimonials
CSS has provided Traffic Control Services to Terraprobe on a few of our Transportation and Infrastructure projects. Their service was very efficient and their staff were courteous, respectful and very helpful in bringing the field work to completion on schedule.
Sepideh D-Monfared
M.E. Sc.,P Eng.
Terraprobe Inc.
I have used Construction Support Services (CSS) many times over the years to facilitate various environmental work within or near road allowances. I would recommend CSS for a number of reasons including: professionalism; flexibility with respect to work scheduling; good health and safety culture; and, competitive pricing.
CSS provides great service and is a sub-contractor on whom I frequently rely to ensure work progresses according to schedule and budget
Steve Della Rossa
Environmental Project Manager
Parsons
CSS continuously exceeds our expectation in all aspects of safety, punctuality and professionalism. We've had the opportunity to see them grow from day one, and look forward to continuing projects together in the future.
Kirk Razmjou
Civil Construction Manager
Powerline Plus LTD.
Thank you for the awesome work you guys did this past 2 weeks. All your crews did an amazing job and our drillers said you guys were great in setting up the next locations and helping protecting the rig crew from traffic!
Herman Padham
Environmental Scientist
Wood PLC
GTA Road Permits & Traffic Plans
Long Duration Setups
Sign & Electric board rentals