A great deal has been done scene I was out there last October. Lifting Gantry # 1 has completed its work between the Dulles Connector Road VA-267 and the Capitol Beltway VA I-495 4 weeks ago. It was disassembled and removed form the last span built east of the Capitol Beltway VA I-495 2 weeks ago. All of the elevated is complete from the median of the Dulles Connector Road VA-267 to the Tysons 123 (Tysons Corner) station.
Lifting gantry #2 is presently working the curve inside the eastbound Leesburg Pike VA-7 to eastbound Dulles Toll Road VA-267 interchange loop ramp. Prior to it's arrival at the east end of the Tysons West (Spring Hill) station all of the platforms spans in the station had been set and the Lifting gantry craweled over the station and started working west of the station. As I wright this there are a total of 16 spans (8 for inbound track N1 and 8 for outbound track N2) that need to be assembled to completed the elevated along Leesburg Pike to the median of the Dulles Access road west of Tysons Corner.
Most of the free standing prefabricated traction power substations and train control rooms have been delivered and set in place at the various location along the right of way. Some even have their step down transformers installed. The inclosures for the traction power substations, traction power tie breaker station and train control room are very utilitarian, They are nearly identical to traction power substations inclosures used on the Baltimore Central Light, only difference being the inclosures are painted tan. The traction power cabling from the traction power substations and tie breaker station to the elevateds will be secured in cable trays attached to the columns and elevated structures as apposed to conduit piping that is inside columns and elevated structures elsewhere on the existing portions of the railroad.
Track work working west from the junction has gone as far as the Tysons East (McLean) Station. The Yard lead junction is in place along with the crossover near Magarity Road. Rail is being installed in the tunnel between the Tysons 123 (Tysons Corner) and the Tysons Central 7 (Greensboro) stations. Rail for that work is being staged on the track bed in the Tysons 123 (Tysons Corner) station. Track work out west has worked east to just west of Difficult Run. Only inbound track N1 in place. Both tracks have been install through the Wiehle Avenue station to the west end of the pocket track.
The Falls Church Yard lead cut and cover tunnel is a little over halfway completed. The invert slabs for the section of the tunnels that will be under the eastbound lanes of the Dulles Connector Road VA-267 to the south portal have been poured. The section of the tunnel under the median to the north portal is complete.
Of the 5 stations Wiehle Avenue is the most complete, followed by McLean, Tysons Corner, Greensboro and Spring Hill. Ground work for the entrance pavilion at all of the station is underway. The columns that will support the pedestrian bridge adjacent to the entrance pavilion on the south sides Dolley Madison Boulevard are in place at the McLean station. The column on the north side of Dolley Madison Boulevard for pedestrian bridge at the Tysons Corner station is in place. The columns that will support the pedestrian bridge adjacent to the entrance pavilion on both side of the Dulles Access / Toll Road at Wiehle Avenue are in place. Mezzanine to platform escalators have been installed in the Wiehle Avenue station. Not sure but I think mezzanine to platform escalators have also been install in the McLean station.
The construction access openings in the barrier walls along the Dulles Connector Road VA-267 have been closed, similarly all of the construction access openings along the Dulles Access Road west of Tysons Corner to Wiehle Avenue have also been closed. Some of the acoustical barrier have been installed on top of the barrier walls where called for.
The use of architectural precast concrete for facades, non bearing partitions, and for station ancillary buildings has and will be used in abundance. The emergency exit stairs inclosure at the stations will also be fabricated with precast concrete along with the landings and stairs. All of the architectural precast concrete elements have been installed at Wiehle Avenue, some have also been installed at McLean and Greensboro. The mezzanine and platform canopy at the Wiehle Avenue station is mostly complete.
Originally published 04 19 2012
Edited 05 05 2012
K and N junction:
|K&N Junction train control room.||VA I-66 at Haycock Road.|
VA I-66 Flyover:
|VA I-66 flyover.||VA I-66 flyover.||VA-267 flyover noth of VA I-66 inbound track N1.|
|VA-267 flyover noth of VA I-66 outbound track N2.|
Falls Church Yard lead:
Dulles Connector Road VA-267:
|VA-267 west abutment flyover outbound track N2.||Dulles Access Road VA-267 north of Idylwood Rd.|
Dolley Madison Boulevard VA-123 between Dulles Connector Road VA-267 and Scotts Crossing Road:
|Anderson Road interlocking traction power cable trays.|
Tysons East (McLean) station:
Capitol Beltway VA I-495 Dolly Madison Boulevard VA-123 interchange:
|VA I-495 crossing.|
Tysons Central 123 (Tysons Corner):
Cut and over tunnels:
|Leesburg Pike VA-7 east end of cut and cover tunnel.|
Tysons Central 7 (Greensboro):
Gosnell Road / Westpark Drive intersection:
|Leesburg Pike VA-7 WestPark Drive / Gosnell Road intersection.|
Leesburg Pike VA-7 between Gosnell Road / Westpark Drive and Spring Hill Road:
|Leesburg Pike outbound track N2.|
Spring Hill Road (Spring Hill) station:
Post-tension lifting gantry #2:
Dulles Access Road:
|Beulah Road Traction power substation.||Difficult Run|
Pictures at picasaweb.google.com/cambronj 04 15 2012