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.



10/25/2015

DCMP 10 25 2015

DCMP 10 25 2015

Excavation for the foundations at the Herndon station has begun.

Most of the sound wall at the Innovation Center Station are complete. The foundation for tower crane is within the footprint of the north, track N2 sound wall, not in the N2 track way as noted in my previous post.

The bridge girders over Centerville Road have been set. They are of the same design as the girders over Horsepen Run.

The right of way barrier walls east of Rudder Road have proceeded several hundred feet more further east.

Columns have begun to come out of the ground west of the east abutment west of Rudder Road.

Excavation at the airport station on the mezzanine side of the of the pedestrian tunnel is nearly complete. Columns have begun to come out of the ground west of the station.

All of the mainline columns from the southern most column along Airfright Lane to the shoulder of the Dulles Greenway are done. Girders continue to be set heading north along Autopilot Drive, as of this date 36 have set along Autopilot Drive and 8 along Airfright Lane.

All of the column in the Dulles Yard lead Y are done. I did not go back into the woods to check the progress on rest of the the columns west of the east lead junction, I think we are safe to assume they are mostly done.

No work has begun on the columns in the median of the Dulles Greenway.

Land is being cleared on the north side of the Dulles Greenway to make way for the entrance at the Loudoun Gateway station. Land is also being cleared on the south side for what appears to be a staging area.

Land is being cleared on the remainder of the site at Dulles Yard.

Most of the girders between the abutments over Broad Run have been set. To reduce the disruption to traffic on the Dulles Greenway the contractor built the column in the stream bed and set those girders before building the abutments and setting the on girders either side of the stream.

Test track and Commissioning Facility

The track work on the test track is done. The signals at the crossover are in place south of the E10 Greenbelt interlocking and are covered with bags. The marker coils for the simulated station alone with the signage marking the location of the ends of the station are in place. The simulated station is located under the Greenbelt Road overpass. The north end is roughly 185' north of the north side of the overpass. The center of the platform is located at roughly E 609+95.

Dulles Access Road:
East of Herndon. Herndon station. Herndon station.
Innovation Center station. Median of Dulles Access Road west of Rudder Road. Median of Dulles Access Road west of Rudder Road.
East elevated abutment and columns in median of Dulles Access Road west of Rudder Road. East elevated abutment in median of Dulles Access Road north of Aviation Drive. Straddle bent columns for elevated flyover of eastbound Dulles Access Road north of Aviation Drive.
Straddle bent columns for elevated flyover of eastbound Dulles Access Road north of Aviation Drive. Straddle bent column for elevated flyover of eastbound Dulles Access Road and abutment north of Aviation Drive. Straddle bent columns for elevated flyover of eastbound Dulles Access Road north of Aviation Drive.
Columns and east elevated abutment in median of Dulles Access Road north of Aviation Drive.

Dulles Airport:
East end Dulles Airport station. Dulles Airport station mezzanine excavation at pedestrian tunnel. Dulles Airport station mezzanine excavation.
Dulles Airport station mezzanine excavation at pedestrian tunnel. Pedestrian tunnel at Dulles Airport station entrance looking south. Pedestrian tunnel at Dulles Airport station entrance looking south.
Pedestrian tunnel at Dulles Airport station entrance looking north. Columns and west ancillary excavation. Dulles Airport station mezzanine excavation.
Columns west of Dulles Airport station. Autopilot Drive north of Rudder Road. Guiders Autopilot Drive.
Guiders Autopilot Drive. Guiders Autopilot Drive. Autopilot Drive north of Rudder Road.
Guiders Autopilot Drive. Cranes used to set elevated guiders. Autopilot Drive south of Materials Road.
Autopilot Drive south of Materials Road. Autopilot Drive north of Materials Road. Autopilot Drive north of Materials Road.

Dulles Greenway:
East Dulles Yard lead,west lead, straddle bent columns Dulles Greenway. Clearing of land for entrance at Loudoun Gateway station. Clearing of land for entrance at Loudoun Gateway station.
Staging area VA-606, south side of Dulles Greenway.
Crane used to set guiders over Broad Run, east end.
Guiders over Broad Run, east end.
Crane used to set guiders over Broad Run, west end.
Crane used to set guiders.

Test track and Commissioning Facility:
Signal at south end of test track crossover. North of Greenbelt Road. Sign marks the location of the north end of simulated station platform.
South of Greenbelt Road. Sign marks the location of the south end of simulated station platform.
Restored security fence a contractor staging area. North of Berwyn Road. South of Berwyn Road.

Pictures at picasaweb.google.com/cambronj DCMP 10 25 2015.

Pictures at picasaweb.google.com/cambronj Greenbelt Test Track and Commissioning Facility.