1/17/2016

DCMP 01 17 2016

DCMP 01 17 2016

Utility tunneling under the Access / Toll Roads at the Reston Town Center and Herndon stations continues. Tunneling under the Access / Toll Roads for the third rail conduits is also underway along with continuing work on the 34.5 KV power feed bus.

Foundations for the right of way barrier walls are being installed between Herndon and Innovation Center, rebar for the barrier walls are visible on some of the foundations. Barrier wall installation continues to move east from Rudder Road to Horsepen Run.

Some preliminary ground work is taking place at Reston Town Center station.

Excavation at the Herndon station continues, a tower crane has also been erected on the track N2 side of the station.

The barrier walls along the entire length of the Innovation Center station are done. Columns that will support the mezzanine and mezzanine canopy are up to the level of the mezzanine.

The south straddle bent that will carry the elevated over the eastbound Access Road north of Aviation Drive was recently poured as it still has its protective blanket covering it. All of the columns west of the east elevated abutment in the median of the Access Road are near completion. The foundations for the straddle bent columns that will carry the elevated over the eastbound Access Road south of Aviation Drive have are done. One of the columns for the straddle bents that will carry the elevated over the eastbound Access Road south Aviation Drive has come out of the ground. No other column foundations work east of the airport station is underway.

Excavation of the airport station mezzanine is complete. The invert has been poured and preparation for the floor slab has begun. The Garage 1 pedestrian tunnel was closed on 01 11 2016 to allow the modification to the tunnel to allow the connection of the station entrance. See Section at Center Line Pedestrian Tunnel N10-NGA-A-303 in the airport station post for the detail of the modification.

All of the columns west of the airport station south of Aviation Drive are various stages of completion.

The remainder of girders have been set on the columns along Autopilot Drive to the 2nd column north of Materials Road. Pouring of the concrete deck has follow the setting of the girders. The contractor moved the cranes 9 columns north of Materials Road and began moving south, they have set 3 of those spans.

The yard lead columns appear to be mostly complete. Jersey barriers have been placed along the right shoulder of the westbound Dulles Greenway in preparation for the lane shift to allow the construction of the mainline elevated flyover, west yard lead elevated flyover, abutments and yard lead junction. No work in the Median of the Dulles Greenway has begun in this area.

Clearing and leveling that involves the use of explosives is taking place on the south side of the Dulles Greenway at the Loudoun Gateway station. (in my previous post I noted this as a staging area) Material from that clearing is being moved to entrance area north of the Dulles Greenway. No work in the median at the site of the Loudoun Gateway station has begun.

The east and west abutments at Broad Run have not been constructed.

A column in the median of Dulles Greenway that will carry Central Station Drive at the Ashburn station has been built. No work in the median at the site of the Ashburn station has begun.

Clearing of the site of the Dulles Yard is well underway. The contractor has graded what appears to be loop tracks at the south end of the site.

Dulles Access Road
East of Herndon. Herndon station.
Herndon station.
Herndon station. Innovation Center station. Innovation Center station.
East of VA-28 Sully Road. West of VA-28 Sully Road. East of Rudder Road.
East of Rudder Road. West of Rudder Road. West of Rudder Road.
West of Rudder Road. West of Rudder Road. North of Aviation Drive.
North of Aviation Drive. South of Aviation Drive. South of Aviation Drive.

Dulles Airport:
East end Dulles Airport station. Dulles Airport station excavation at pedestrian tunnel. Dulles Airport station mezzanine excavation at pedestrian tunnel.
Dulles Airport station mezzanine excavation at pedestrian tunnel. Dulles Airport station mezzanine excavation. Columns and west ancillary excavation.
Columns and west ancillary excavation. Columns and west ancillary excavation. Dulles Airport station.
Dulles Airport station. Dulles Airport station. West end Dulles Airport station.
Columns west of Dulles Airport station. Columns west of Dulles Airport station. Autopilot Drive south of Materials Road.
Autopilot Drive south of Materials Road. Girder bearings north of Materials Road. North of Windshear Road.
North of Windshear Road.

Dulles Greenway:
East Dulles Yard lead, west lead, straddle bent columns. Guiders over Broad Run, east end. Guiders over Broad Run, west end.
Central Station Drive column at Ashburn station.

Dulles Yard
Grading north end. Grading south loop.

Pictures at picasaweb.google.com/cambronj DCMP 01 17 2016.

Pictures from 8:37 dash cam video shot westbound along Dulles Access Road from Wiehle Avenue in Reston to Saarinen Circle in front of Garage One.



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