Marin judge issues tentative ruling in Mount Tam cycling suit

A Marin County judge has issued a tentative ruling that would prevent the Marin Municipal Water District from launching two pilot programs expanding bike access on Mount Tamalpais because of environmental concerns.

Judge Andrew Sweet, who issued the tentative ruling last week, listened to oral arguments from plaintiffs and the district on Nov. 1. Sweet is expected to issue a judgment shortly.

Attorneys for the water district said two separate pilot bike programs are affected: one to open 7 miles of watershed trails to bikes...