Updated Dec. 2, 4:35 p.m. The I-45 closure for this weekend is being postponed due to the rain in the forecast. It is now scheduled to happen Monday, Dec. 5 at 9 p.m. until Tuesday, Dec. 6 at 5 a.m. and begin again on Friday, Dec. 9 at 9 p.m. until Monday, Dec. 12 at 5 a.m. The following road closures were announced by the Texas Department of Transportation today: I-45 POSTPONED TO DEC. 5 A total closure of all northbound and southbound mainlanes of I-45 between I-10 and Hwy. 59/ Hwy. 69 will take place Friday, December  2 at 9 p.m. until Monday, December 5 at 5 a.m. and again on Friday, December 9 at 9 p.m.until Monday, December 12 at 5 a.m. The Texas Department of Transportation is working to reconstruct the West Dallas Bridge over I-45 North Freeway in downtown Houston. The bridge was struck by a vehicle in September. FM 2920 Two alternate lanes will be closed from Hwy. 249 to Business 249 nightly from 7:00  p.m. to 6:00 a.m. through the morning of Friday, Dec. 23.