Dulles Metrorail Silver Line Phase 2: Fairfax County Parking Garages & WMATA Surcharge Agreement
Dulles Corridor Metrorail Project Phase 1 & Phase 2 Updates · 10/11/2018 · Dulles Corridor...
Transcript of Dulles Corridor Metrorail Project Phase 1 & Phase 2 Updates · 10/11/2018 · Dulles Corridor...
Dulles Corridor Metrorail Project
Phase 1 & Phase 2 Updates
October 11, 2018
Charles W. Stark
Senior Vice President
Phase 1
Expenditures (May thru Aug 2018)
$ 1.2 Million
Total Expenditures (Thru Aug 31, 2018)
$ 2.910 Billion
Forecast at Completion $ 2.982 Billion
Phase 1 Cost Summary
Phase 1 Quarterly Update
• Dulles Transit Partners (Bechtel) Closeout Status
Bechtel’s subcontractor will complete the pipe cleanout and
survey on September 7.
Stainless steel sleeve spot remediation will begin September
10.
Liner remediation will begin once calculations are approved by
VDOT.
MWAA is continuing to remedy the remainder of the deficient
items via the Phase 1 closeout task order contract.
Phase 1 Quarterly Update
• Closeout of VDOT Comprehensive Agreement
There are two categories of work that must be performed:
remediation of remaining VDOT facility deficiency items and the
Old Meadow Road intersection lane widening.
• Task Order Contract Status
Task Orders with Notice To Proceed: 44 issued including Old
Meadow Road Design, 32 complete.
Upcoming activities include: Chain Bridge Road drainage,
Americans with Disabilities Act sidewalk repair, underdrain
remediation, and Dulles Connector Road left shoulder
resolution.
Manhole/structure repair work is underway.
Bus turnout remediation is complete.
Old Meadow Road Schedule
• The final design is nearing completion for the realignment.
Design is continuing from 90%. MWAA is finalizing the design
with the input from the utility companies.
• Utility Issues:
Numerous utility facilities require minor relocation work, but
significant coordination and time effort for management, design
and construction.
11 utility agencies/companies are involved.
• Plans Moving Forward:
Task order contractor managing utility coordination. Traffic study
is complete and under review. Study advises against full closure
based on rush hour loading.
Begin construction in fall 2018 with an estimated completion in
the 4th quarter of 2018.
Survey and Pipe Cleaning Westbound Route 7
Underdrain Repair at McLean Station
Bus Turnouts at Spring Hill Station Before
Bus Turnouts at Spring Hill Station Today
Phase 2
Package A 86% Complete
Package B 87% Complete
Phase 2 Cost Summary
Expenditures (May thru Aug 2018)
$ 116 Million
Total Expenditures (Thru Aug 31, 2018)
$ 1.849 Billion
Forecast at Completion $ 2.778 Billion
Upcoming
• Electricians continue to install train control equipment and pull cable
on the aerial guideway and east at grade guideway following track
installation.
• East Stations – Continue ceiling, electrical and plumbing installation,
escalator and elevator installation. Herndon Garage Stair Tower
installation is ongoing.
• West Stations – Loudoun Gateway and Ashburn elevator and
escalator installation are underway.
• Track – All rail on the east has been installed up to the Phase 1
alignment and has been turned over to the electricians for systems
installation.
• Track – At grade track has been installed west from the aerial
guideway on the Greenway median through Loudoun Gateway
Station and toward the Ashburn Station.
Guideway & Stations
Design-Build Activities
Reston Station Painting and Ceiling Installation
Reston Station Platform Paver Installation
Reston South Precast Retaining Wall Underway
Electricians Installing Power Cables at Traction Power Substation #13
Foundations Underway at Herndon South Stair Tower to Fairfax County Garage
Herndon North Pedestrian Bridge Set to North Pavilion
Installing Ceiling Grid in Dulles Station
Yard Lead Crossover Switch Ready for Systems Installation
Installing Rail in Greenway Median
Setting Rail at Ashburn Station
Electricians Installing and Testing ATC Cables at Horsepen Crossover
Electricians Installing Batteries in Tie Breaker Station #7
WMATA Rail Yard & Maintenance Facility
Design-Build Activities
Current Construction
• Installation of plumbing, electrical work, and HVAC continues
through out the Service and Inspection Building (SIB), Maintenance
of Way Building (MWB), Transportation Building and Warehouse
Building.
• Finishes – Painting, tiling and ceiling work ongoing in the SIB and
MWB office areas.
• Installation of signals, switches and insulated joints for track
construction continues.
• Train control and traction power installation and testing continues.
WMATA Rail Yard & Maintenance Facility
Design-Build Activities
Other Ongoing – Non-Construction Activities
• VDOT has completed Route 606 work, including a new site
entrance at Commerce Court.
• Columbia Gas’ contractor has begun installing the natural gas
line under Route 606.
• Hensel Phelps continues to develop plans for final testing and
acceptance.
• Inspection and testing ongoing.
Underfloor Wheel Lathe in the SIB
Erecting Steel Support Frame for the Stinger System in the SIB
Wheel Truing Pit in the SIB, Underfloor Wheel Lathe in the Background
Car Hoist Jacks Awaiting Installation in the SIB
Storage Yard and MOW Assembly Area from SIB Tower
SIB High Bay Service Area
34
Precast Concrete Precast concrete fabrication issues are at the Herndon,
Reston, Innovation, Loudoun and Ashburn Metrorail
stations.
• Manufactured by Universal Concrete in Stowe, PA
• Air entrainment out of specification
• Water/ cement ratio out of specification
• Potential alkali-silica reactions for aggregates (ASR)
Study Results
• Latest petrographic test results from MWAA and CRC do not
indicate evidence of ASR. Further, silane sealer adds
additional ASR protections.
• Silane sealer application every 10 years will resolve air
entrainment and water/cement ratio issues.
Silane solution to be applied every 10 years for 100-year
durability, funded by Capital Rail Constructors.
• Proposed solution prevents water intrusion
• Will resolve air entrainment issues, water/cement ratio
deficiencies and will prevent alkali-silica reactions
Proposed Solution
Precast Concrete
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