The SFMTA has begun striping work on new bike lanes along 8th Street in SoMa and 17th Street in the Mission and Potrero Hill.
Eighth Street already had a skinny door-zone bike lane , but the SFMTA is expanding it as a buffered bike lane by re-purposing a roughly 10-foot wide motor vehicle lane for bicycles from Market to Townsend Street. That means 8th is being put on a road diet, and the preliminary striping alone already seems to have had a traffic calming effect.
On 17th Street, new bike lanes are being striped between Treat and Potrero Avenues, connecting the lanes striped  last year between Treat and Church Street  to the ones between Potrero and Kansas Street. Crews have traced out the curbside, buffered bike lanes and installed “No Parking” signs on the stretch.
Both projects come with fresh, smooth pavement, since they were coordinated with street re-pavings.
Check out more photos after the break. We’ll have more coverage once they’re completed.
See you back here Thursday. Enjoy the Fourth, everyone.