A Section of I-20 will be closing for about three months. The area affected is Westbound I-20, East of Birmingham, between the I-459 interchange and the I-20/59 interchange near the Birmingham airport. The official detour will take along I-20 Westbound to the I-459 interchange in Irondale, North along I-459 to Trussville, then South along Interstate 59 to the I-20/59 interchange.