By Mark Holan, editorial director, ARTBA

The second phase of the Silver Line transit rail project, which will extend service from downtown Washington, D.C. to Dulles International Airport, has reached 67 percent design and construction completion.

The $2.7 billion project, which employs more than 6,200 workers, has a 0.91 safety recordable rate compared to the 3.30 national average, according to an Oct. 18 project update. More than 5 million manpower hours were logged through Aug. 26.

The first 11.4 miles of the 23-mile rail extension in Northern Virginia opened in 2014. Construction on the remaining portion began in 2014 and is still about two years from substantial completion.

Capital Rail Constructors, a joint venture of ARTBA member firms Clark Construction Group, LLC, and Kiewit Infrastructure South Co., is leading the design-build effort.