This post was written by Hatchet staff writer Rachael Gerendasy.

The opening of the Silver Line was pushed back again this week because of more snags with the ambitious project’s construction.

The project, which would extend the Metro rail system an additional 23 miles and eventually connect to Dulles Airport, has already faced substantial delays. The first phase of the project, which would extend the Orange Line to Reston, Va., was initially slated to open last year.

Dulles Transit Partners, project’s contractor, has failed to meet seven of 12 criteria set by the Washington Metro Area Transit Authority, including safety features, according to a Washington Post report.

“Today it is our determination that [Dulles Transit Partners] failed to achieve substantial completion based on the documents we’ve reviewed,” Pat Nowakowski, executive director of the rail project, told the Post.

Trains will not start taking passengers on the line until the summer, though the added delays should not bump up the cost of the $5.6 billion project.

The Metropolitan Washington Airports Authority will meet with Dulles Transit Partners Tuesday to discuss the remaining issues, which include automatic train control system, elevator and escalator problems, water leaks, and incomplete paperwork.