Engineering: Outer Loop
Physical Office Closure:
We would like to inform you that our physical office is currently closed. However, our team continues to work remotely and remains fully available to assist you.Engineering is online:
We have shifted support to email to ensure that all of your platting and other plan related needs and questions are answered in a fast and thorough manner. Please reach us at [email protected] and we can provide detailed, step-by-step guidance and a permanent record to which you can refer to at any time. Check out Engineering Frequently Asked Questions or the Citizen Self Service for help with no waiting! ... Learn More: Civic AccessThe Collin County Outer Loop is a 55-mile planned multi-modal transportation facility that will ultimately go from the Denton/Collin County Line, through cities including Celina, Weston, Anna, Melissa, Farmersville, Josephine and Royse City, to the Rockwall/Collin County Line. The facility will include a freeway with a wide area in the center reserved as a future transit corridor.
Since 2000, the County has been in the process of planning for the facility starting with a corridor study and leading up to the identification of a preferred alignment. A diagram of the 500-foot wide right of way is shown below to illustrate how the facility is perceived to be utilized.
An overview of the alignment can be seen in the County's interactive map for more detail.
The freeway is being built in a phased approach. The construction of the service roads will be developed ahead of the freeway main lanes and the center will be reserved for the transit corridor.
Status
The Outer Loop is being developed in five segments, as can be seen on the overview map. Below is the most recent activity for each of the segments.
Segment 1: U.S. 75 to S.H. 121 (Between Anna and Melissa)
The County completed the two-lane roadway, which will function as the future westbound service road of the freeway, from US 75 to SH 121. The County is currently working on the schematic design.
Environmental Documents
Segment 2: FM 6 (Between Nevada and Josephine) to Rockwall County line (E. of Royse City)
A technically preferred alignment for Segment 2 was approved in 2009. The County is currently working on a project refining the previous alignment to develop the schematic design and local environmental document. Engaging the public, city leaders, and other stakeholders is an important part of this project. Learn more and sign up to receive notices by visiting the project website.
Segment 3: Denton/Collin County Line (in Celina) to U.S. 75 (Between Anna and Melissa)
Construction
The County completed the 2-lane roadway from Dallas Pkwy to US 75.
Design
Design is on going for the second set of service roads from Denton/Collin County line to Choate Pkwy.
Environmental Documents
Schematic
The County has completed a schematic for the future Outer Loop freeway from the Denton/Collin County Line to US 75 as well as concept designs for the future Outer Loop at the interchanges with US 75, Preston Rd./SH 289 and the Dallas North Tollway. Those documents can be found in the links below.
Schematic files from FM 2478 (Custer Rd.) to US 75 (8)
Schematic files from Denton/Collin County Line to FM 2478 (Custer Rd.) (6)
Concept plan for US 75/CCOL Interchange (1)
The concept plans for the interchanges at Preston Rd. and the DNT are incorporated in the schematics.
Segment 4: US 380 (in Farmersville) to FM 6 (Josephine)
A technically preferred alignment for Segment 4 was approved in 2010. The County is currently working on a project refining the previous alignment to develop the schematic design and local environmental document. Engaging the public, city leaders, and other stakeholders is an important part of this project. Learn more and sign up to receive notices by visiting the project website.
Segment 5: S.H. 121 (in between Anna and Melissa) to U.S. 380 in Farmersville
The technically preferred alignment was approved in 2006. The County is currently working on a project refining the previous alignment. Engaging the public, city leaders, and other stakeholders is an important part of this project. Learn more and sign up to receive notices by visiting the project website.
Upcoming Event: Notice of In-Person Meeting #2
When: June 3rd, 2026 5:00pm - 7:00pm
Where: Buerna Vista Ranch9200 N State Hwy 78
Blue Ridge, TX 75424
When: June 4th, 2026 5:00pm - 7:00pm
Where: Melissa United Methodist Church3851 Mckinney St.
Melissa, TX 75424
All materials, from the in-person meeting, will also be available on the project website starting on June 3,2026 at 5pm. Comments received by July 6th, 2026, will be made part of the official meeting record.