The US flag above the White House flies at half-staff on April 16, 2013 in Washington, DC (MANDEL NGAN/AFP/Getty Images)
(USA TODAY) -- A week after the Boston Marathon bombing, authorities continue to close off Pennsylvania Avenue from pedestrian traffic in front of the White House.
Police tape still lines the northern border of Pennsylvania Avenue -- next to Lafayette Park, which remains open -- while police cars seal off the part of the street right in front of the White House.
A week ago, right after two bombs exploded near the finish line of the Boston Marathon, the Secret Service announced that "out of an abundance of caution, we have expanded our security perimeter at the White House complex. It is not unusual to expand or contract these security perimeters."
As of Monday morning, there were no plans to ease the restrictions.
Authorities closed Pennsylvania Avenue to vehicle traffic in front of the White House right after the Oklahoma City bombing in 1995.