Gov. Robert F. McDonnell (R) appointed someone new to the board overseeing Metro’s Silver Line rail extension Friday, one day after he removed a labor leader from the post.

A worker uses a backhoe to excavate dirt as work continues at the Tysons Corner Seven Central Station on Metro’s Silver Line project. (Nikki Kahn/The Washington Post)

Martire, who filed a lawsuit Thursday over his removal, had clashed with McDonnell over incorporating a union-friendly project labor agreement into the second phase of the Silver Line project. He had also drawn criticism for overseas travel expenses, including a $9,000 trip to Prague to attend a transportation conference

The governor has been seeking greater influence with the airports authority. Pushing out Martire, an appointee of former governor Timothy M. Kaine (D), allowed McDonnell to install Merrick, a businesswoman who ran unsuccessfully for the state Senate.