GDT Traffic Control Powers a Safe and Seamless Intersection Rebuild in Superior, Colorado

1. Project Overview: Coalton Road & Indiana Street Reconstruction

The Town of Superior's Road Improvement Project was a bold investment in both infrastructure and livability. Situated at a critical junction surrounded by neighborhoods, public facilities, and active travel corridors, the project involved:

• A full-depth rebuild of the intersection down to the subgrade
• Drainage system upgrades
• Polymer-mixed asphalt resurfacing for extended longevity
• Waterproofing of an underpass trail system used by cyclists and pedestrians
• New pedestrian access points, ADA improvements, and right-of-way enhancements

From the first phase of demolition to the final round of striping and signage, the project demanded continual traffic control. GDT was tasked not only with keeping things moving but with ensuring safety, access, and visibility throughout each phase.

2. Project Challenges: Live Environments and Layered Expectations

The complexity of this project wasn't measured in miles or square feet — it was measured in lives impacted daily. The intersection sits directly in front of a working fire department, with Boulder Valley School District's K–8 campus just around the corner. Throw in high-volume residential traffic, a popular bike underpass, and weekend pedestrian use, and the challenge became clear: every day was a moving puzzle.

Among the most pressing challenges:

• Firehouse Access: Emergency responders needed unimpeded ingress and egress 24/7, even during excavation and paving.
• School Zone Awareness: With children walking and biking to class each day, heightened pedestrian safety became a top priority.
• High-Volume Residential Commuters: Surrounding neighborhoods demanded consistent access and real-time updates on traffic impacts.
• Weekend and Holiday Monitoring: Even when work paused, GDT had to keep traffic patterns safe, clear, and compliant.
• Dynamic Construction Phases: The multi-layered rebuild involved everything from drainage installs to polymer mixing, requiring flexible, modular traffic control setups.

This wasn't just about cones and signs. It was about orchestrating safety around a changing work zone with dozens of moving parts — and doing so without disrupting the daily lives of Superior's residents.

3. Unique Approach: GDT's Blueprint for Proactive, People-First Traffic Control

What sets GDT apart is its unwavering focus on early planning, collaborative execution, and adaptive tools that respond to the real-world context of a job site. For the Coalton and Indiana rebuild, GDT didn't just show up — they got involved early.

Planning and Stakeholder Collaboration

A full month before work began, GDT initiated stakeholder meetings with:

• Town of Superior engineers and public works staff
• Boulder Valley School District safety officers
• Boulder County Sheriff's Department
• Local fire department leaders
• Brannan Sand & Gravel's construction teams

Tactical Execution in the Field

With prep work in place, GDT deployed an expertly trained crew and a full suite of traffic control devices to the site. Their daily field strategy included:

• Three certified flaggers on rotation each day
• Arrow boards, message signs, and smart barricades for real-time traffic direction
• Long- and short-term traffic control setups that adapted to excavation, paving, and drainage work
• Pedestrian-safe corridors with ADA-compliant detours around active work areas

4. Results: Safe, On-Time Delivery with Zero Incidents

When the dust settled, GDT's efforts spoke volumes. The project was delivered on schedule, with zero safety incidents, zero public complaints, and full operational continuity for every stakeholder group.

Performance Metrics That Matter:

• 120-day completion window met without delays
• Zero safety mishaps — no accidents, no near-misses
• Zero recorded community complaints — no noise, traffic, or access grievances
• 100% firehouse access maintained during every construction phase
• Full school pedestrian safety achieved daily, thanks to enhanced monitoring and signage
• Bicycle and pedestrian trail access retained via waterproofed underpass and safe detours

Driving Progress, Safely

From the first pre-construction meeting to the final safety sign-off, GDT proved that traffic control is more than logistics — it's leadership. This project illustrates why GDT Traffic Control remains Colorado's go-to expert for high-stakes public works projects that demand coordination, communication, and care.

For cities, contractors, or agencies planning their next big infrastructure improvement, GDT is the trusted partner who ensures every detour leads to progress — safely, efficiently, and with community in mind.