Marty Gordon NRVsports@mainstreetnewspapers.com Local officials recently received an update on construction at the planned Amtrak stop in Christiansburg. According to the Virginia Passenger Rail Authority, construction on the future New River Valley passenger rail station is progressing on schedule. The VPRA has announced crews are continuing to install erosion and sediment measures, as well as storm sewer structures and piping. The contractor has poured tiers of cellular concrete into silt fence quadrants in what will become the parking lot area....