ORLANDO, Fla. -- Nighttime and early-morning motorists who take State Road 408 will have to deal with some closures for two nights due to the "I-4 Ultimate" project, transportation officials say.

On Wednesday night, eastbound S.R. 408 at Interstate 4 will close from 10 p.m. and will reopen 6 a.m. Thursday, the Florida Department of Transportation says.

On Friday and Saturday nights, both east- and westbound lanes of S.R. 408 at I-4 will shut down at 10 p.m. and will reopen the following mornings at 6 a.m., FDOT says.

The lanes will be closed so workers can work on bridge girders for the new flyover ramp at the I-4/408 interchange.