WALKER COUNTY – Closures previously scheduled for July 20th and 21st, have been canceled. Weather permitting, Northbound IH-45 will be closed nightly on Monday and Tuesday, July 15 and 16, 2019, from 8:00 PM until 4:00 AM. Southbound IH-45 will be closed nightly from Tuesday, July 16, 2019 through Friday, July 19, 2019, from 8:00 PM until 4:00 AM. All IH-45 traffic must exit using the PR 40 exit ramps (Exit 109). Traffic will be directed across PR 40 to access IH-45 at the entrance ramps. PR 40 will be closed to traffic between the IH-45 ramps. PR 40 will also be closed to westbound traffic from SH 75 to IH-45. This closure is necessary to work on the bridge over PR 40. Message Boards have been placed advising of the closure, and detour signs will be placed along the detour routes to alert and guide traffic through the detour.