OK was trying to get on the 405 south coming from the Santa Monica area(10 east) about 1am PT last night: anyway did see a detour sign telling me to take National , however thought it would be better to go North(kind of a quick bad decision i found out) and just exit Santa Monica Blvd. and get back on the 405. Santa Monica CLOSED, proceeded to Wilshire West  : exited :405 South exit closed : made a quick decision to go back to Sepulveda Southbound (back towards Santa Monica Blvd) got to Santa Monica Blvd 405 south CLOSED , took Sawtelle to National and got back on the 405 south...what do you want from us  angelenos Caltrans!