Map shows Dulles Access Highway and Toll Road near Wiehle Avenue station. (Courtesy Dulles Metrorail)

The first section of the pedestrian bridge that will provide access to the Silver Line’s Wiehle-Reston East station is scheduled to be installed Friday night across the westbound side of the Dulles International Access Highway. 

The section is about 61 feet long and weighs more than 85,000 pounds.  The transport that will move it down the access highway weighs in at about 350,000 pounds, said Marcia McAllister, spokeswoman for the Dulles Metrorail project. To reach the station, It will move eastbound for a little less than a mile at walking speed from a staging area in the highway median near Reston Parkway. 

On Monday, another section is scheduled to be put in place over the Dulles Toll Road. Then two nights later, according to the plan, a section will be installed over the Wiehle Avenue entrance ramp.

These installations will require overnight closings of the access highway, the toll road and the Wiehle Avenue ramp. The access highway is affected each night because the components are staged in the median and must travel down the highway or cross over it for each installation, McAllister said.

Friday night traffic schedule

Drivers heading west on the access highway late Friday should allow extra time to reach the airport. The access highway will be closed between just west of the Beulah Road bridge near Wolf Trap and the Reston Parkway, and traffic will be detoured onto the adjacent Dulles Toll Road. The far left lane of the westbound toll road will be closed in this area.

The Friday night work is scheduled to begin at 9 p.m. and be completed by 7 a.m. Saturday.