Commuters crowd a train platform at Rosslyn Metro station. (The Washington Post)

On too many days, Metro serves up an ample dose of frustration, with breakdowns and repair work snarling travel, but the subway and bus network ranks fourth in the nation when it comes to connecting the dots between home and work.

That’s according to the Accessibility Observatory at the University of Minnesota, which has ranked 49 of the 50 largest cities in the U.S. for the ability to get workers to their jobs via transit.

“This project updates our detailed evaluation of access to jobs by transit,” said observatory Director Andrew Owen. “Transit is an essential transportation service for many Americans, and we directly compare the accessibility performance of America’s largest metropolitan areas.”

New York, which just opened several stations that extend its subway, ranked first, followed by San Francisco and Chicago. Next came Washington, followed by Los Angeles, Boston, Philadelphia, Seattle, San Jose and Denver.