Expect detours Thursday if you're looking to head into downtown New Bedford from I-195.

The Massachusetts Department of Transportation says the southbound downtown New Bedford exits 15 from both sides of I-195 will be closed early Thursday morning to allow railroad bridge work on the Wamsutta Bridge. The ramps are scheduled to be closed from 2am to 6am Thursday.

Thursday night, MassDOT will also be closing the Route 24 southbound ramp in Fall River that leads to I-195 eastbound. That ramp will be closed from 7pm Thursday to 5:30am Friday morning.

Drivers are advised to plan ahead and seek alternate routes.