Eastbound state Route 16 will close at Union Avenue tonight at 11 p.m. until 4 a.m. Friday.
Signs will detour vehicles off SR 16 at Union Avenue, and will lead to Interstate 5.
SR 16 will also close from 12:30 to 5:30 a.m. Saturday, and from 11 p.m. to 4 a.m. again starting Monday, Wednesday and Thursday.
The closures are part of the I-5/SR 16 Eastbound Nalley Valley project to replace the original section of eastbound SR 16 that went over Nalley Valley.
Crews will be doing girder setting work.