Share this: Facebook Twitter LinkedIn SFMTA.com/14551 Prediction Unavailable min Arriving Prediction Unavailable Stop closed — no service Predictions valid as of Predictions unavailable for any route as of Route & Arrival Details 19 Polk 5 a.m. - 10 p.m. daily Destination Predicted Arrivals Shipyard Prediction Unavailable 44 O'Shaughnessy 24 hours daily Live Map