Southbound I-5 is scheduled to close at night from Wednesday, July 19-Friday, July 21 between Camino Capistrano and PCH/Camino Las Ramblas, according to officials.
Next week, northbound I-5 is scheduled to close at night from Wednesday, July 26-Friday, July 28 between Avenida Pico and PCH/Camino Las Ramblas.
Crews will be replacing outdated overhead signs that span the freeway.
Lane closures are scheduled from 10 a.m.-5 a.m. Full freeway closures will be from midnight-5 p.m.
Officials said motorists should expect significant delays and avoid the area if possible.