Caltrans is closing one lane on eastbound Interstate 580 at the Richmond-San Rafael Bridge, from 8:30 p.m. to 4 a.m. Mondays through Fridays through mid-June so paint crews can move scaffolding to a new location.

No closures are scheduled for Friday night, May 23 and Monday night, May 26. Motorists should expect travel delays and allow more time to reach their destinations.