KCBS_740 CONCORD (KCBS) — The bus bridge BART has set up between a pair of stations in the East Bay is causing a headache for riders, but the free shuttles are saving them money.

A one-way trip between North Concord / Martinez and the Pittsburg / Bay Point stations costs $2, or $4 for a round trip.

Riders between those stations have been forced to board buses to complete their trips, ever since a voltage spike knocked out about 50 cars Wednesday morning.

Riders aren’t happy about the delays, but the extra cash is helping to ease the pain.

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“Any means to save a little money is a big help,” BART rider Paula said. She had to take the shuttle Monday. She’s using the extra cash to get herself a treat. “Coffee – warm hot coffee,” she said.

BART was still working Monday to resolve the power issue.

“We haven’t gotten to the root of the problem,” BART Spokesperson Alicia Trost said.