The proposal to improve transbay transit with a contraflow bus lane on the Bay Bridge is gaining traction, as the SF Chronicle reported yesterday. The idea has been pushed by proponents at SPUR, AC Transit, and some BART board members for years as a relatively quick and inexpensive solution to move more people between SF and the East Bay. BART is already experiencing “crush loads” under the Bay, but a second transbay tube may not come for decades.
As SPUR explained in a video in 2011, converting an eastbound traffic lane into a westbound bus-only lane during morning commute hours could move an additional 10,000 bus riders per hour — “almost the entire capacity on the entire upper deck” of the Bay Bridge — on AC Transit’s 30 transbay lines, which currently carry an estimated 14,000 passengers per day. It would require the construction of new bus ramps, including one to connect to the Transbay Transit Center in SF.
“With our packed capacity, and all of the development in the Transbay area and [Transbay Center] nearing completion, we’re going to really need that bus capacity,” said Tom Radulovich, a BART board member and director of Livable City. “Building a shiny, multi-billion dollar terminal and having those buses stuck in traffic doesn’t make a lot of sense.”
The biggest barrier to implementing the idea is convincing Caltrans, which has jurisdiction over the Bay Bridge, said Radulovich. According to him, the agency has said that the contraflow lane is unnecessary because it can manage car congestion through ramp metering. Caltrans didn’t respond to a request for comment.