Caltrans is closing a couple of offramps and lanes of Highway 101 tonight.

It is shutting the southbound Todd Road and Wilfred Avenue offramps from 8 tonight until 5 a.m. Wednesday and is blocking off two lanes of southbound 101 from Todd in south Santa Rosa to Wilfred in Rohnert Park, with one lane closing at 8 p.m. and the ssecond at 10 p.m.

Caltrans’ announcement didn’t say what’s prompting the closures, and a Caltrans spokesman was unavailable for comment.

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