There's a train coming, and Petaluma is trying to get the word out that the related construction next month will shut several streets at rail crossings.

"It'll be a bit of a mess. People will find a way (around it), they will have to, " said Petaluma Police Sgt. Ken Savano.

The tentative schedule, according to police, for the SMART train work calls for closure at the tracks of:

; Corona Road, Sept, 11 to 13.

; Payran Street, Sept. 18 to 20.

; East Washington Street, Sept. 25 to Sept. 27.

; D Street, Oct. 1 to 3.

; South Point Boulevard also will be closed but those dates were uncertain late last week.

The closures are part of the rail district upgrade of the tracks through Sonoma County. Crews are tearing out the old crossings and putting in new track and smooth crossings. To do so, they need to shut all lanes at each crossing day and night.

Savano said city officials are trying to spread word of the upcoming closures so that drivers can avoid them and take alternate routes.

(Jim Fremgen, Press Democrat news editor, writes the Road Warrior blog. Follow the Road Warrior on Twitter via @PDRoadWarrior.)