Made a run to Tysons last evening
Contractor has begun construction of the yard lead tunnel west of the Connector Road. 4 segments of invert slab are done. 2 segments of track bed slab are in place on the invert slab on the east end
One span in the Tysons East (McLean) station still needs to be set
It appears that the segments use to assemble the spans over the Capitol Beltway VA I-495 do not add up to a multiple of the total length of a span. They are setting forms in the remaining gap to pour in place the segment that is shorter then the precast segments that are being made at the post tension segment casting plant. From what I could see there are no expansion joints in the combined spans over the Beltway
Lifting gantry #2 was reassembled west of the Tysons Central 7 (Greensboro) station in the middle of July and started working west
They were unloading more segments along Leesburg Pike
The columns that will support the mezzanine in the Tysons Central 7 (Greensboro) station were partly completed.
Notice signal head for new interlocking.
Originally published 07 28 2011
Edited 05 05 2012
|K and N Junction track laying operations outbound track N2.|
Track construction continues west of K and N junction.
N Route Silver line flyover east of West Falls Church Station:
|Concrete ties track N2 east abutment of VA I-66 K route flyover.|
Post-tension lifting gantry #2
Precast concrete post-tension bridge segments:
Falls Church Yard lead tunnel:
|Track bed slab for Falls Church Yard lead tunnel west of VA-267 Dulles Connector Road.|
The Tysons Central 7 (Pike Seven Plaza) station is starting to come up out of the ground.
Tysons Central 7 (Greensboro) station:
|Mezzanine columns Tysons Central 7 (Greensboro) station.|
Pictures at picasaweb.google.com/cambronj 07 27 2011