Bi-County Tunnel will improve water service in Prince George's, Montgomery counties

KENSINGTON, Md. (WJLA) - A tunnel running 5.3 miles underneath Montgomery and Prince George's County will change the way residents in both counties get their water.

The Bi-County Tunnel, begun in 2009 and expected to be completed and operational next year, connects existing water mains at Tuckerman Lane in Rockville and Rock Creek Park. Once opened, it will carry 100 million gallons of water per day.

The project is part of a larger plan to update suburban Maryland's infrastructure to keep pace with its growing population. Some major mains being worked on have been planned since the 1970s, WSSC project manager John Mitchell said.