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Collin County Outer Loop

Collin County ranks as one of the top growth areas in the state and the nation. Since the 2000 census, the county's population grew more than 52 percent by 2009, including massive private and commercial development. In that light, Collin County officials continue to evaluate and prepare for the next major outer-loop thoroughfare.

In December 2002, Collin County initiated the Outer Loop Alignment Study to develop various alignments within and along a 3,000-foot-wide corridor. The study identified a locally preferred alignment in order to determine right-of-way needs for the road to be built when the time comes.

Most recently, Commissioners approved contracts with local engineering firms to refine the technically preferred alignment and finalize the engineering design of several segments of more than 50 miles of Collin County’s portion of the regional outer loop.

Additional information and project study maps regarding the Collin County Outer Loop Alignment Study can be viewed by clicking the links below.

Outer Loop Overview

Outer Loop at U.S. 75 Interchange Preliminary Engineering Study

Concept Plan Design

Sept. 21, 2015, Collin County Toll Authority Board Meeting:

Preliminary Engineering Technical Presentation by HNTB
Environmental Document Presentation by NCTCOG
Approved Local Environment Document, Sept. 21, 2015

Segment 1: U.S. 75 to S.H. 121 (in Melissa)

Segment 1: Technically Preferred Alignment (November 2006)
Segment 1: Local Environmental Document
Segment 1: 2-lane Service Road Plans
Segment 1: 2-lane Service Road Construction Phase Sheets

Segment 2: FM 6 to Rockwall County line

Segment 2: Technically Preferred Alignment Approved for Public Meetings (Updated September 2010)
Segment 2: Technically Preferred Alignment Approved for Public Meetings (July 2009)
Segment 2: Environmental Contraints

September 17, 2009 Nevada, TX:
Segment 2 and 4 Alignment Presentation at Community High School

Segment 3: Dallas North Tollway to U.S. 75

NEW as of September 2015

Design is ongoing for the construction of a two-lane service road from the Dallas North Tollway to just east of S.H. 289. This effort includes the Preliminary Engineering Concept Design for the Interchanges at the Outer Loop and Dallas North Tollway and the Outer Loop at S.H. 289. These Interchange Concept Designs are for the purpose of Right of Way acquisition only. A public meeting is tentatively scheduled for late October 2015. Please contact the Engineering Department Staff for more details, 972-548-3727.

Segment 3: Technically Preferred Alignment (updated August 2012)

Oct. 27, 2015: Open House Public Meeting
Open House Public Meeting Summary
Segment 3a Open House Public Meeting Comment form
Segment 3a, 2-lane Service Road Schematic
Outer Loop at Dallas North Tollway Concept Design
Outer Loop at S.H. 289 Concept Design

Aug. 6, 2012, Public Hearing
Segment 3: SH 289 to FM 2478 Presentation
Segment 3: SH 289 to FM 2478 Alignment Alternatives
Segment 3: SH 289 to FM 2478 Approved Technically Preferred Alignment
Public Comment Form
Combined Final Report

May 10, 2012, Collin County Toll Road Authority Meeting:
Segment 3 Diagrammatic Layout

Oct. 24, 2011, Collin County Toll Road Authority Meeting:
Segment 3 Presentation
Segment 3 Study Findings
Segment 3 Diagrammatic Layout

Segment 3: Technically Approved Alignment (August 1, 2011)

Aug. 1, 2011, Collin County Toll Road Authority Meeting:
Segment 3 Alignment Alternatives
Segment 3 Presentation to Court
Segment 3 Final Report

May 16, 2011 Public Hearing:
Outer Loop Public Comment Form
Outer Loop Segment 3 Map (April 2011)
Public Hearing Presentation

April 11, 2011, Collin County’s Toll Road Authority Meeting

August 26, 2010, Weston, TX Property Owners Meeting:
DRAFT Segment 3 Alignment

Segment 3: Technically Preferred Alignment (November 2006)

Segment 4: U.S. 380 to FM 6

Segment 4: Technically Preferred Alignment Approved for Public Meetings (Updated September 2010)
Segment 4: Technically Preferred Alignment Approved for Public Meetings (July 2009)
Segment 4: Environmental Constraints

Sept. 17, 2009, Nevada, TX:
Segment 2 and 4 Alignment Presentation at Community High School

 
Segment 5: S.H. 121 to U.S. 380 (Farmersville)

Segment 5: Technically Preferred Alignment (November 2006)

 
Historical Documents and Information

Historical Corridor & Alignment Study documents