Jim Weinstein, executive director of NJ Transit, has come to an abrupt end of his recently troubled tenure, with Gov. Chris Christie’s office announcing earlier in the week that he was to be replaced. The director of the New Jersey Turnpike Authority will take his place.

Weinstein, a former state Department of Transportation commissioner and NJ Transit board chairman, has headed the agency for the past four years.

The last half of his tenure has been stormy, starting with superstorm Sandy and more than $100 million in damage to some 300 rail cars and locomotives due to flooding in the rail yard where they were stored, and ending with thousands of Super Bowl fans forced to wait hours for a ride out of MetLife Stadium because the transit system couldn’t handle their large numbers. That has far overshadowed several accomplishments of which Weinstein is proud, including more than three years without a fare hike.