By Keith Laing - 01/17/13 04:56 PM EST
The Silver Line extension is one of the largest heavy, or fixed, railways currently under construction. Many cities have trended toward developing light rail lines because of reduced construction costs.
The Obama administration has provided $900 million to the construction of the first phase of the Silver Line, which will run through northern Virginia’s Tysons Corner.
Construction on the second phase of the Silver Line, which will include a stop at Dulles Airport, is expected to begin next year.
Dulles Corridor Metrorail Project Executive Director Pat Nowakowski said the shift to testing on the first phase of the project “is a very visible sign of the project’s shift from intense heavy civil construction to systems and testing that are necessary to ensure the safe and reliable operations of the rail line.”
Read the MWAA's full Silver line update here.
Photos courtesy of the MWAA