ST. LOUIS — A plan to restart the scuttled Loop Trolley ran into big trouble Friday when Bi-State Development Agency commissioners failed to endorse taking over the line.

No vote was taken on a motion to advance a plan by the agency’s president and CEO, Taulby Roach, to have Bi-State manage the 2.2-mile streetcar line for four years as part of its Metro transit system.

Following the commissioners’ move, Roach said, “I have no further way to move it forward,” adding that he has no plans to retool his proposal to try to win their support.

“We’ve worked ... to come up with the best plan that we could at this point,” he told reporters. “But right now, it’s just not good enough to reach approval of my commissioners.”

It wasn’t clear Friday if there is any other path forward to revive the trolley, which shut down last month after running for only about a year amid a string of financial and operating problems.