Collin County Outer Loop

The Collin County Outer Loop is a partially-built beltway in Collin County, Texas. The highway would travel from the Denton County line to the Rockwall County line, passing through cities in the northern and eastern parts of the county.

The Loop is part of the DFW Regional Outer Loop project, which would encircle the Dallas–Fort Worth metroplex.

The highway was initially proposed as a toll road, with Collin County establishing the Collin County Toll Road Authority to manage the project. However, in March 2019, following the county's Commissioners Court opted to make the road a freeway.

Current status
, the highway consists of two discontinuous segments, both of which are primarily two-lane roads. These segments will serve as frontage roads in the final highway.

The eastern segment (officially Segment 1) runs 4.6 mi from US 75 in Anna to SH 121 northeast of Melissa.

The western segment (officially Segment 3) runs 4.8 mi from Dallas Parkway to Custer Road (FM 2478) in Celina.

Future
The Outer Loop is planned to run for approximately 50 miles from the future northern extension of the Dallas North Tollway in Celina to Interstate 30 near Royse City. For construction purposes, the loop is divided into five segments.

Segment 1
Segment 1 is the first section of road opened, running from US 75 to SH 121. The segment was built at a cost of $21 million.

This section will eventually become the north frontage road as main freeway lanes are added.

Segment 2
Segment 2 will run from FM 6 between Nevada and Josephine to the Rockwall County line near Royse City. This segment could possibly be extended further south past Interstate 30 through Rockwall, Kaufman and Dallas counties as part of a much larger outer loop.

Segment 3
Segment 3 will run past US 75 to the future north extension of the Dallas North Tollway in Celina. This section will run through north McKinney (close to Weston) and cross SH 289 (Preston Road) before ending at the Dallas North Tollway. This section could be extended further west through Denton County as part of a larger outer loop.

Construction on the portion between Dallas Parkway (future Dallas North Tollway) and SH 289 (Preston Road) started in 2019. This was extended to FM 2478 (Custer Road) in October 2022, with further extension to US 75 originally planned for 2023. Construction began in 2024

Segment 4
Segment 4 will run from US 380 near Farmersville to FM 6 between Nevada and Josephine.

Segment 5
Segment 5 will connect segments 1 and 4, running through sparsely populated areas of the county.