WMATA: Dulles Corridor Metrorail Project progress update

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WMATA: Dulles Corridor Metrorail Project progress update
Posted by Sand Box John on Fri Nov 6 10:35:00 2009 edf40wrjww2msgDetail:detailStr fiogf49gjkf0d From Dulles Corridor Metrorail Project progress update e-mail newsletter 11 04 2009 There was no October progress update e-mail newsletter. Construction of the 2,400-foot tunnel begins.(Outbound track N2) The tunnel will connect Route 123 to Route 7 in Tysons Corner. Photo by Andrew Stone, Dulles Corridor Metrorail Project. Tunnel Construction Begins Beneath a busy interchange on top of the highest point in Tysons Corner, crews are mining a tunnel that will carry the Dulles Corridor Metrorail tracks from Route 123 to Route 7. Working two 12-hour shifts per day, crews began tunnel construction, using the New Austrian Tunneling Method (NATM) to mine the first of two tunnels, the outbound segment. Construction will start on the inbound tunnel in the coming months. The tunnels when completed will be 2,400-feet long. Construction is not visible to drivers because it is behind a crew fence along Route 123 near International Drive. During construction, crews are using sensor technology to monitor the tunnel and nearby roads for any movements. Soil in the tunnel area is a combination of gravel, clay and sand. Lane Shifts, Traffic Pattern Changes in Store for Route 7 Businesses and residents of the Tysons area have been told to expect major traffic pattern changes all along the 1-mile rail construction zone of Route 7 from the Dulles Toll Road east to Route 123 in the coming weeks. For example: The service roads along the edges of the east and westbound lanes of Route 7 will be closed so that the edges of Route 7 itself can be pushed out to the edges of the service roads and beyond to make room for construction of the rail line and stations in the median of the road bed. Near the two stations to be built along Route 7-Tysons Central 7 (near SAIC and Marshalls) and Tysons West (between Spring Hill and Tyco Roads), the eastbound lanes will balloon out into the parking areas of some businesses. Also, along the eastbound lanes, crews will be building retention walls to support the new road bed as crews must build up many existing service roads to the levels of Route 7. Mid-block left turns will be eliminated. Drivers will be encouraged to make U-turns at the existing signalized intersections: Westwood/Tyco, Spring Hill and Gosnell/Westpark. A major lane shift has already taken place on Route 7, beginning at the Route 123 overpass. The traffic signal at Route 7 from the Route 123 exit to Winchester and Reston has been removed. The ramp from Route 7 to southbound Route 123 has been relocated. Overlooking the Route 7 construction and ramp shift from the Route 123 overpass. (Area to left is where bored tunnels will transition to cut and cover.) Photo by Dulles Corridor Metrorail Project. Station Construction in Tysons, Reston Preliminary construction work is beginning near all five station sites: four in Tysons and one at Wiehle Avenue in Reston. Work is most visible near the Wiehle Avenue Station in the middle of the Dulles International Airport Access Highway between Wiehle Avenue and Reston Parkway and at the Tysons East Station at Route 123 and Scotts Crossing Road near Capital One. Wiehle Avenue Station construction in the median of the Dulles International Airport Access Highway. Photo by Dulles Corridor Metrorail Project. Along the Dulles Connector Road & I-66 Along the Dulles Connector Road, near I-66, piers and caissons are sprouting up to support a flyover for the rail line from the Orange line to the Connector Road. Pile driving to support new bridges at Idylwood and Magarity Roads and Pimmit Run continue. Rail construction trucks are using I-66 inside the Capital Beltway during restricted day and night hours. Up to 74 trucks per day will be allowed to the Lee Highway/Washington Boulevard exit to turn around and go westbound on I-66. For details, visit a www.dullesmetro.com. Piers are being put in place at the intersection of the Dulles Connector Road (Route 267) and I-66. Photo by Howard Menaker, Dulles Transit Partners. ### The above photo was taken in the same area as this photo I took on 08 02 2009. Dulles Connector Road just north of VA I-66 Newsletter in PDF format with maps. (1.05 MB PDF File) John in the sand box of Maryland's eastern shore.
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Re: WMATA: Dulles Corridor Metrorail Project progress update
Posted by Newkirk Plaza David* on Fri Nov 6 10:42:49 2009, in response to WMATA: Dulles Corridor Metrorail Project progress update, posted by Sand Box John on Fri Nov 6 10:35:00 2009.* edf40wrjww2msgDetail:detailStr fiogf49gjkf0d Nice update, thanks for sharing. Imagine if the MTA/MTACC leadership was at the helm of this project???????? It would take 50 years to dig the first 100 feet of one tunnel.
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Re: WMATA: Dulles Corridor Metrorail Project progress update
Posted by #5 - Dyre Ave* on Fri Nov 6 22:24:26 2009, in response to Re: WMATA: Dulles Corridor Metrorail Project progress update, posted by Newkirk Plaza David on Fri Nov 6 10:42:49 2009.* edf40wrjww2msgDetail:detailStr fiogf49gjkf0d Agreed. The Dulles Metrorail project will be done before we even get the first three stations of the Second Avenue Subway. Count on it.
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Re: WMATA: Dulles Corridor Metrorail Project progress update
Posted by Sand Box John* on Fri Nov 6 22:26:54 2009, in response to Re: WMATA: Dulles Corridor Metrorail Project progress update, posted by Newkirk Plaza David on Fri Nov 6 10:42:49 2009.* edf40wrjww2msgDetail:detailStr fiogf49gjkf0d Nice update, thanks for sharing. Thank the folks at, www.dullesmetro.com. I will admit that I spent some time reformatting the content so I could post it here. Imagine if the MTA/MTACC leadership was at the helm of this project???????? It would take 50 years to dig the first 100 feet of one tunnel. This is not, and never was a WMATA project, though WMATA will operate it when completed. Dulles Transit Partners, LLC which is comprised of Bechtel Infrastructure, Inc. and Washington Group International (now URS) won the design-build contract under Virginia's Public-Private Transportation Act. The Metropolitan Washington Airports Authority is the lead agency on the project. John in the sand box of Maryland's eastern shore.
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Re: WMATA: Dulles Corridor Metrorail Project progress update
Posted by Easy* on Fri Nov 6 22:29:45 2009, in response to Re: WMATA: Dulles Corridor Metrorail Project progress update, posted by #5 - Dyre Ave on Fri Nov 6 22:24:26 2009.* edf40wrjww2msgDetail:detailStr fiogf49gjkf0d Just from the photos above the pace of construction looks impressive. They get done in 3 months what takes a year in LA.
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Re: WMATA: Dulles Corridor Metrorail Project progress update
Posted by salaamallah@hotmail.com* on Fri Nov 6 22:35:01 2009, in response to Re: WMATA: Dulles Corridor Metrorail Project progress update, posted by Easy on Fri Nov 6 22:29:45 2009.* edf40wrjww2msgDetail:detailStr fiogf49gjkf0d i mean easy they are TCB there
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Re: WMATA: Dulles Corridor Metrorail Project progress update
Posted by Sand Box John* on Sat Nov 7 09:18:49 2009, in response to Re: WMATA: Dulles Corridor Metrorail Project progress update, posted by Easy on Fri Nov 6 22:29:45 2009.* edf40wrjww2msgDetail:detailStr fiogf49gjkf0d Just from the photos above the pace of construction looks impressive. They get done in 3 months what takes a year in LA. Excavation of the tunnel actually began a little more then 3 weeks ago. The first elevated column was poured back in late August. Construction progress is about par for the course when compared to previous metrorail segments. Being that there are 3 elevated segments in this phase of the N route Silver line, and all of these elevateds are going to be constructed using segmented post tension precast concrete. I wonder how many segment positioning rigs they plan on using. The final segment of the original 103 mile system (Southern F Route Green line) has 2 elevated segments that have a combined length, roughly 2/3 the length of the longest segment on this phase of the N Route Silver line. The contractor only used one segment positioning rig on that project. It is my opinion, when all is said and done, most of the time spent on this project will have been spent jumping through all of the National Environmental Policy Act hoops. The first public workshops were back 1999, The first proposals released to spur public interest in the project were back in 1998. Actual construction on the first phase began this past March, projected completion of Phase I is 2013. No start date has been set for Phase II. John in the sand box of Maryland's eastern shore.
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