Here’s a heads up for drivers who use the Richmond-San Rafael Bridge. Caltrans is closing two lanes on the lower deck again tonight and tomorrow. This will affect eastbound traffic from 7 p.m. to 5 a.m. Crews are doing maintenance and repair work during the overnight hours. But on Monday, they expect to shut down one lane at 7 p.m. and this will affect the morning rush hour since it won’t reopen until Tuesday afternoon.