Engineering: Roadway Projects

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Below are compilations of transportation and building projects in which Collin County departments play a role. We've sorted these out in an effort to show residents what is currently happening with roadways throughout the county.

City Managed Projects
Project
Limits
Status
Coit Rd.
Vest Ln to Choate Pkwy

Construction: 42% Complete, End of Construction: March 2027

Coit Rd. Intersection Improvements
Coit Rd. at First Street, Prosper Trail and Frontier Parkway

Construction start: 40.6% Complete; End of Construction: October 2026

Leonard Rd.
Foster Crossing to Collin County Outer Loop

Construction: Complete June 2026

Lucas Rd.
FM 2551 to Country Club Rd.

ROW/100% Design; Tentative Start: August 2026

McMillen Dr.
McCreary Rd. to Country Club Rd.

Construction: 90% Complete; End of Construction: Spring 2027

N. Greenville Ave
CR 850 to ISD Property Line

Construction: Substantially Complete; Tentative End of Construction: September 2026

Project
Coit Rd.
Limits
Vest Ln to Choate Pkwy
Status

Construction: 42% Complete, End of Construction: March 2027

Project
Coit Rd. Intersection Improvements
Limits
Coit Rd. at First Street, Prosper Trail and Frontier Parkway
Status

Construction start: 40.6% Complete; End of Construction: October 2026

Project
Leonard Rd.
Limits
Foster Crossing to Collin County Outer Loop
Status

Construction: Complete June 2026

Project
Lucas Rd.
Limits
FM 2551 to Country Club Rd.
Status

ROW/100% Design; Tentative Start: August 2026

Project
McMillen Dr.
Limits
McCreary Rd. to Country Club Rd.
Status

Construction: 90% Complete; End of Construction: Spring 2027

Project
N. Greenville Ave
Limits
CR 850 to ISD Property Line
Status

Construction: Substantially Complete; Tentative End of Construction: September 2026

Collin County Managed Projects
Project
Limits
Status
CR 398

60% Design and ROW acquisition underway. Tentative Start: 1st Quarter of 2027.

CR 557
US 380 to SH 78

Design in Progress

FM 546 Phase I
CR 393 to US 380

95% Design; Tentative Start: Winter 2026

FM 546 Phase II
Airport Dr. to CR 393
County is managing the schematic for TxDOT.  Schematic is 95% complete.
Outer Loop - Second Service Roads
Collin County Line to Choate Pkwy
60% Design; Tentative Start of Construction: Mid 2026
Outer Loop Segment 1
US 75 to TX 121
Schematic Design 30% Complete
Outer Loop Segment 5
TX 121 to CR 655

Alignment Study Underway.  2nd Public Meeting to be held in June 2026.  Public Hearing set for Fall 2026. 

Outer Loop Segments 2 &4
US 380 to Rockwall County Line
Schematic Design is in Progress
Outer Loop/US 75 Intersection
Intersection Study in Progress
Park Blvd
Parker Rd to Spring Creek Pkwy

Construction: 59.8% Complete, Tentative End of Construction: Late 2027

Project
CR 398
Limits
Status

60% Design and ROW acquisition underway. Tentative Start: 1st Quarter of 2027.

Project
CR 557
Limits
US 380 to SH 78
Status

Design in Progress

Project
FM 546 Phase I
Limits
CR 393 to US 380
Status

95% Design; Tentative Start: Winter 2026

Project
FM 546 Phase II
Limits
Airport Dr. to CR 393
Status
County is managing the schematic for TxDOT.  Schematic is 95% complete.
Project
Outer Loop - Second Service Roads
Limits
Collin County Line to Choate Pkwy
Status
60% Design; Tentative Start of Construction: Mid 2026
Project
Outer Loop Segment 1
Limits
US 75 to TX 121
Status
Schematic Design 30% Complete
Project
Outer Loop Segment 5
Limits
TX 121 to CR 655
Status

Alignment Study Underway.  2nd Public Meeting to be held in June 2026.  Public Hearing set for Fall 2026. 

Project
Outer Loop Segments 2 &4
Limits
US 380 to Rockwall County Line
Status
Schematic Design is in Progress
Project
Outer Loop/US 75 Intersection
Limits
Status
Intersection Study in Progress
Project
Park Blvd
Limits
Parker Rd to Spring Creek Pkwy
Status

Construction: 59.8% Complete, Tentative End of Construction: Late 2027

For a comprehensive list of TxDOT projects and information, please click on links below: