A siren will go off in Bethesda this week, followed by likely muffled explosive blasting needed for Purple Line construction.
WASHINGTON — If all goes according to plan, a siren will go off in Bethesda on Monday, followed by likely muffled explosive blasting needed for Purple Line construction.
Starting Monday, the blasting is planned around 9:30 a.m. or 1:30 p.m. to remove rock from a shaft that will eventually be a new, second entrance to the Bethesda Metro station connected to the Purple Line station and the surface at Wisconsin Avenue and Elm Street.
While each blast is expected to be only a few seconds, it’s enough to be felt nearby, and Metro trains in the area could even be stopped momentarily.
A Purple Line construction advisory warns there could be blasting between 5 a.m. and 8 p.m. on weekdays through January, depending on the exact amount and type of rock found.