Just days ahead of the grand opening of the Petaluma North station, there will be a road closure on Corona Road near the station to allow for final improvements. Sonoma-Marin Area Rail Transit (SMART) announced the closure which will take place on Wednesday night from 7 pm to about 6 am on Thursday. There will also be a partial road closure on Thursday night from 10 pm to 6 am for further work on the railroad crossing at N. McDowell Boulevard. Drivers are advised to use caution and watch out for flaggers in the area.