Visited the project area 11 17 2012, Here are my observations, link to pictures at end of post.
The signal installation problem at some of the interlockings has been solved. The contractor attached an L bracket to the inside of the barrier wall above the cable trench and mounted the signal mast base on top of the L brackets. A flexible conduit extends down from the under side of the bracket into the cable trench.
The feeler car is now located in the Falls Church Yard. This could mean that WMATA is close to making the first run on the route under third rail power. Word has it this move should happen before the middle of December.
This would make sense because all of the traction power substations from the junction and along the Dulles Connector Road VA-267 are in place and have been connected to the third rail. All of the cables connecting the tiebreaker and substation along Dolley Madison Boulevard and Chain Bridge Road VA-267 including the inside to outside third rail jumper cables are in place. All of the traction power substations and jumper cables are in place along Leesburg Pike VA-7 and the Dulles Access Road all the way to the Wiehle-Reston East station. The only location where third rail cables have not been installed is between the substation and the interlocking west of the Spring Hill station.
It is not uncommon to test the traction power distribution system using trains prior to having the train control and signaling system up and running.
All of the signals have been installed between the junction and the McLean station and along the Dulles Access Road west of Leesburg Pike. The signals protecting the interlocking west of the Spring Hill station did not appear to be installed yet, I am unable to see the interlocking west of the Tysons Corner station so I can not tell what the progress is there.
The 5 pedestrian bridges at the McLean, Greensboro and Wiehle-Reston East stations have been installed. One span at Wiehle-Reston East, north side, is awaiting the contractor building the Reston Station development. The pedestrian bridge for the north side at Spring Hill was being assembled on the ground. The entrance pavilions at Spring Hill are not totally done and are still awaiting their architectural precast concrete. The contractor was starting the assembly of the canopy over the entrance pavilion at the McLean station.
Escalators have been installed in the entrance pavilions at McLean, Greensboro north entrance and Wiehle-Reston East south entrance. The only entrance pavilions where work is being done on the elevators is at the McLean station.
So far I have noticed two incorrectly fabricated architectural precast concrete panel. At first I thought it one of them was installed upside down, on closer inspection it has the darker bands one course lower then the others on the first one I noticed and two courses higher on the other.
The platform canopies have been installed at the McLean station. Progress is well under way at the Spring Hill station. The mezzanine and platform canopies at Greensboro and Tysons Corner are nearly done.
Most of the architectural steelwork at the McLean station has been installed
The right of way intrusion detection system cables on the fences from the junction to the east abutment at Old Chain Road have been installed. Form the west abutment west of Leesburg Pike to the tail tracks west of the Wiehle-Reston East station the installation is about 95 percent done.
Chaining signs have been installed along the right of way as far west as Hunter Mill Road a T/B (Turn Back) sign has been installed west of the yard lead junction. Various signs that identify the location of train control boundaries have been installed.
Based on my latest observations the RTUs (Remote Terminal Unit) are as follows:
- K98 K&N Junction
- N91 Plainfield Street (Fall Church Yard Lead)
- N92 Baldwin Drive (Dulles Connector Road)
- N01 McLean (Tysons East)
- N02 Tysons Corner (Tysons Central 123)
- N03 Greensboro (Tysons Central 7)
- N04 Spring Hill (Tysons West)
- N05 Wolf Trap
- N93 Chatham Ford Drive
- N94 Hunter Mill
- N95 Sunset Hill Road
- N06 Wiehle-Reston East (Wiehle Avenue)
In the curve east of the Hunter Mill Road overpass and in the curve west of the Beulah Road overpass the elevation of inbound track N1 is lower then the elevation of outbound track N2.
The structure built to house post-tension segment casting plant at Dulles International Airport is still standing, however all of the equipment used to do the casting and handling of the segments has been removed.
Captioned thumb nails along with the above and past essays can be view at cambronj.blogspot.com DCMP 11 17 2012
Pictures with captions can be viewed at picasaweb.google.com/cambronjr DCMP 11 17 2012