Collin County continues to experience tremendous growth, and the newly opened segment of the Collin County Outer Loop (Segment 3C) marks a major milestone in supporting the region’s long-term mobility. BGE served as the lead engineering partner for this critical 8-mile, 500-foot-wide new-location corridor between Custer Road and U.S. 75, advancing it from early planning and final design through construction management.

BGE Drives Mobility Forward in Collin CountY 

The Collin County Commissioners Court and the Collin County Toll Road Authority (CCTRA) were pleased to announce the completion of Segment 3C of the Collin County Outer Loop, which officially opened to the public on Friday, November 7, 2025.

The Commissioners Court recognized BGE and the construction team for delivering this segment ahead of schedule. The acknowledgment highlights the strong collaboration between the County, BGE, and all project partners.

“We’re tremendously excited to open this new segment of the Outer Loop,” said Chris Hill, Collin County Judge. “This roadway will improve mobility and reduce travel times across the fast-growing northwest corridor of Collin County. I’m grateful for the hard work and dedication of everyone who helped make this project a reality.”

A Vision Built for the Future

According to Brian Reinhardt, PE, Managing Director, NTX/AR Transportation Systems, who led the project’s planning and schematic design:

“Our objective was to deliver a future-proof corridor designed to serve today’s growth while accommodating tomorrow’s needs. The success of this project—opening early and positioning the County for long-term mobility—reflects detailed planning, strong coordination, and true dedication from the entire team. We’re proud to support Collin County’s vision for enhanced regional connectivity.”

BGE’s Engineering Expertise

BGE led a comprehensive effort from early feasibility through construction. Our work began with alignment studies to identify a preferred route using constraints that included environmental, utility corridors that included major high-voltage transmission lines, and the acquisition of new right-of-way for the corridor. From there, BGE developed the full

schematic design for a 500-foot-wide controlled-access facility with frontage roads and ramps across approximately eight miles of new terrain. BGE, led by Lexcen Grosshuesch, PE, then performed final design and developed the construction plans for one of the two-lane frontage roads. Scott Hutchins, PE, BGE’s construction management team, worked with the contractor to build the project that led to an early opening to traffic.

The ultimate buildout includes:  

• 10 mainlanes
• 4/6 frontage road lanes
• On/off ramps and seven grade separations
• Major FEMA-regulated crossings at Honey Creek and the East Fork of the Trinity River
• Numerous minor drainage and structural improvements

Complex Challenges, Collaborative Solutions

Delivering this project required close coordination with multiple agencies, developers, and adjacent engineering teams, including:

• The City of McKinney
• North Central Texas Council of Governments (NCTCOG)
• Adjacent segment 3W engineer (an adjacent consultant design team)
• Major landowners and developers, including those in Trinity Falls and Colmena Ranch
• Numerous utilities

Significant challenges were overcome through collaboration and technical precision, particularly:

• Matching property corners and planned thoroughfares within rapidly developing communities
• Optimizing FEMA floodway structures through detailed hydrologic and hydraulic analysis
• Ensuring compatibility with the City of McKinney and Collin County’s long-range planning
• BGE also coordinated a NEPA-like environmental document through NCTCOG, providing all constraints data, impact assessments, and project details needed to support environmental clearance.

BGE’s multidisciplinary team provided the full suite of planning and design services, including:

• Feasibility and alignment studies
• Schematic design
• Public involvement
• Surveying
• Utilities and SUE
• Geotechnical investigation
• Traffic operational analysis
• ROW mapping
• Final plans, specifications, and estimates (PS&E)
• Construction Management

The Future of Mobility for North Texas

The Collin County Outer Loop represents forward-thinking infrastructure at its finest, planned with intention, designed for flexibility, and built to support one of the fastest-growing regions in the country.

BGE is honored to partner with Collin County and the City of McKinney to bring this vision to life, ensuring a safer, more efficient transportation network for North Texas today and well into the future.

For expert assistance with your projects, contact BGE today.