St. Mary’s Road/Sixth Street will be closed between Church and Granada avenues Saturday morning.

The road will stay closed through the end of May while crews install a 90-inch storm drain as part of a project to reconstruct and widen St. Mary’s from Interstate 10 to Church.

Traffic will be down to one lane between Granada and I-10.

Use Speedway as an alternative route.

Drivers will be able to turn east onto Sixth from Church or turn west onto St. Mary’s from Granada.

The $7.3 million project, funded by the Regional Transportation Authority, began in November and should be completed by January.