DCMP 06 26 2016
Post no later then Wednesday.
Construction on all of the stations along the Dulles Access Road is now taking place. Excavation and pile driving for the foundation at the Reston Town Center station is well underway. The trees and brush have been cleared from the site for the Sunset Hills Road entrance on the north side of the station.
The Herndon Station has begun to come up out of the ground. The foundations are mostly complete over the entire length of the station. Forms for the first section of wall on the inbound side is in place. The wells for the hydraulic pistons of the mezzanine to platform elevators are in place.
The Innovation Center station continues to lead the race to completion. All of the columns up to the the mezzanine level are in place. The west ancillary has been topped out and has had its precast panels installed on both sides and the east end, the west end is sill open. Land on the south side of Sunrise Valley Drive has been cleared for the station entrance and parking garage.
Construction of the right of way barrier walls are at various stages of completion between Herndon and the east elevated abutment west of Rudder Road.
Ground work continues for storm drainage in the areas where right of way barrier walls has not commenced construction.
Mining for the utilities and traction power tunnels under the roadways of the access and toll road continues at various locations. The 34.5 KV power feed bus along most of the length of the Dulles Access Road is being trenched under the eastbound shoulder of the Access Road. Portions of the shoulder along Rudder Road north of the Dulles Assess Road have been milled off to allow the trenching of 34.5 KV power feed bus between the Access Road and Autopilot Drive.
The west straddle bent that will carry the elevated over the eastbound Dulles Access Road north of Aviation Drive is done. The forms have been set for the east straddle bent. I doesn’t look like concrete has been poured yet. South of Aviation Drive the columns for the two straddle bents, one over the eastbound and westbound Access Road, are done. None of the columns have come up out of the ground between Aviation Drive and the straddle bents south of Aviation Drive. Only one column between straddle bents south of Aviation Drive and the east end of Dulles Airport station have come up out of the ground.
At the Dulles Airport station, forms have been placed for the floor above of the mechanical room adjacent to the mezzanine to platform elevator pits. The first section of floor slab at the mezzanine level on the west end has been poured. Rebar for the second section is being placed. Rebar for the walls at the west end are also being placed. All of the columns for the station outside of the footprint of the mezzanine are at various stages of completion. The pedestrian tunnel has not been daylighted yet to make the connection to the station entrance. I think we can safely assume that is being held off to accommodate the shortening of the moving side walks and the modification of the profile in the part of the tunnel south of the station entrance.
Again all columns west of the Dulles Airport station are at various stages of completion including the columns along Airfright Lane south of the columns where the first girders were set.
The the decks on girders along Autopilot Drive between Rudder Road and Materials Road are done. Forms for the deck on the girders north of Materials Road extend out to just short of the east yard lead junction. Girders have been set to the last mainline column before the flyover and have been set roughly halfway between the east yard lead junction and the west yard lead junction.
Work on blasting to grade the site for Dulles Yard continues. It looks like the area for the shop building is being prepared for ground work.
Construction on the abutments for the Broad Run bridge have still not been completed.
No construction has begun at the sites of the station west of Dulles Airport. However jersey barriers are being placed at various location along both shoulders of the Dulles Greenway west of Old Ox Road VA-606.
I have now learned that the work being done west of the Old Ox Road VA-606 Dulles Greenway interchange is a VDOT project that will rebuild and upgrade the road to four lanes divided from west of the Dulles Greenway to west of the Loudoun County Parkway. At Horsepin Run, a bridge is being built next the to the exiting road at a higher elevation to eliminate the pipe culvert that drains Horsepin Lake into Broad Run.Dulles Access Road
|Stone crusher Dulles Yard.||Dulles Yard south loop.||VA-606 Old Ox Road reconstruction map.|
|New west abutment for VA-606 bridge over Horsepin Run.||New east abutment for VA-606 bridge over Horsepin Run.|
Pictures at picasaweb.google.com/cambronj DCMP 03 27 2016.