Portions of the Hwy. 249 frontage roads in Tomball will be closed this weekend—beginning 10 p.m. Friday—as the Harris County Toll Road Authority moves ahead with extending the Tomball Tollway north to Spring Creek.

According to HCTRA, the Hwy. 249 frontage roads between FM 2920 and the county line at Spring Creek will remain open to northbound and southbound traffic. However, drivers should expect delays.

Here's what you need to know:

  • Both frontage roads will have alternating lane closures from 10 p.m. Friday, March 17, to 5 a.m. Monday, March 20.

  • Traffic will shift to two outside lanes on either frontage road.

  • The inside lane northbound and southbound will be closed continuously until main lane and frontage road widening work is completed.