The morning commute into San Francisco has gone smoothly so far today following the overnight closure of a major off-ramp from the Bay Bridge into The City, a transportation official said.The Folsom Street off-ramp from westbound Interstate 80 closed for a project that will last through March to increase pedestrian access in the area and reconfigure the off-ramp to increase traffic efficiency. Motorists are advised to take either the Fremont Street or Harrison Street exits from westbound I-80 to access Folsom Street during the closure. As of shortly after 8 a.m., “the morning commute was pretty smooth, with no major tie-ups or backups on the Bay Bridge,” said Eric Young, a spokesman for the San Francisco County Transportation Authority. “Our hope is that people know” about the closure and plan accordingly, Young said. More information about the $3.5 million off-ramp project can be found online at www.sfcta.org/FolsomRamp.