Here are the latest updates on five transportation projects happening in the Conroe area.

Ongoing projects

Hwy. 75 improvements

Project: Hwy. 75 between South Loop 336 North and Gladstell Street is undergoing improvements such as planing and base repair.

Update: According to a July 8 media update from the Texas Department of Transportation, this project is 20% complete.
  • Timeline: first quarter of 2025-fourth quarter of 2025
  • Cost: $3.3 million
  • Funding source: state funds
Hwy. 105 widening


Project: Hwy. 105 is being reconstructed and widened from two to four lanes between 10th Street and South Loop 336.

Update: This project is 42% complete, according to TxDOT.
  • Timeline: March 2023-second quarter of 2028
  • Cost: $52.65 million
  • Funding source: state funds
I-45 high-occupancy vehicle extension

Project: Between FM 1488 and South Loop 336 South, I-45 is undergoing an extension of its high-occupancy vehicle lane.

Update: This project is 40% complete, according to TxDOT.
  • Timeline: second quarter of 2025-fourth quarter of 2025
  • Cost: $1.3 million
  • Funding sources: state, federal funds
South Loop 336 widening


Project: South Loop 336 is being widened from two to four lanes with a continuous left turn lane between I-45 and Ladera Creek Trace.

Update: This project is 32% complete, according to TxDOT.
  • Timeline: November 2024-third quarter of 2027
  • Cost: $20.57 million
  • Funding source: state funds
I-45 LED installation

Project: Between FM 830 and Shepard Hill Boulevard, I-45 is undergoing the installation of high-mast LED poles along the main lanes.

Update: This project is 8% complete, according to TxDOT.
  • Timeline: February 2025-first quarter of 2026
  • Cost: $1.45 million
  • Funding source: state funds