Beginning 8 PM Friday March 22 and ending 5 AM Monday March 25, the outside lane of IH-45 northbound will be closed near the Montgomery and Walker county line to south side of FM 1375 over pass, weather permitting. Also the FM 1375 northbound exit ramp will be closed on Friday, Saturday and Sunday nights from 8PM to 5AM.  This closure is for motorist and worker safety while placing temporary detour pavement on IH 45 northbound. Drivers should reduce speed and maintain safe traveling distances between vehicles and be prepared for extended delays during this closure.