Parsons - 2010 Construction Management for AWV.pdf - SCATnow

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Bored Tunnel Alternative Design-Build ProjectDesign-Build Construction Management ServicesSR 99I-405 Corridor ProgramBellevue, waPROJECT DETAILSClient Representative:WSDOTContract Dates:03/2002 - 03/2012Total Dollar Amount:$1.5 billionServices Provided:Design and CM Services for Design-Builid andDesign-Bid-Build ProjectsPROJECT BACKGROUNDThe I-405 Corridor Program includes the design and construction of $1.5 billion worth of improvements along the I-405corridor. The program is comprised of seven design-build and five design-bid-build projects.Among the I-405 Corridor Program’s many successes is the project team’s goal to leave the environment better than wefound it. As part of the GEC, Parsons helped develop the environmental compliance database used by design-buildersto track progress and monitor the successful completion of environmental commitments made in the environmentaldocuments and permits. To date, the ten I-405 projects that have been awarded are on schedule, within budget, and havemet all legislatively mandated milestones.Significant Challenges and/or InnovationsOn the I-405/NE 8th St. to SR 520 Braided Ramps Project, Parsons worked with WSDOT to streamline the right-of-wayacquisition process. Appraisals were started prior to final approval of the right-of-way plans, shortening the overall right-ofwayacquisition process by as much as six months.Parsons helped WSDOT to assign risk more appropriately, and therefore receive more competitive bids. Parsons helpeddevelop the process that integrates RFP production, design, and cost estimating, which ultimately helped WSDOT maximizeits available budget.Parsons developed a self-directed design quality management program for the I-405 Corridor Program, which was basedon Parsons’ quality management plan, successfully used on the Tacoma Narrows Bridge Design-Build project. Parsons’independent quality auditor reviewed and recommended several process improvements to the environmental qualityprocess, which were immediately implemented, and WSDOT has adopted the process as their standard in developingenvironmental documents.Parsons facilitated the shift in responsibility for QA/QC from WSDOT to the design-builder, and provided quality verificationinspectors with experienced personnel from the Tacoma Narrows Bridge project.Parsons’ staff wrote the traffic management section of the RFPs to minimize inconvenience to the public and maximizesafety during construction. We also review design-builder traffic management proposals, coordinate with the NorthwestRegion Traffic Office, and ensure implementation during construction.Roles of Major ParticipantsAs a member of the general engineering consultant (GEC) co-located team, Parsons is providing design, programmanagement, preparation of RFQs and RFPs for design-build projects, and construction management services for WSDOT.Parsons has many full-time managerial and technical staff overseeing this work.16
Bored Tunnel Alternative Design-Build ProjectDesign-Build Construction Management ServicesSR 99Willamette River CSO ProgramPortland, ORPROJECT DETAILSClient Representative:City of Portland, Bureau ofEnvironmental ServicesTotal Dollar Amount:$1.2 billionContract Dates:9/02 - 2011Services Provided:QA/QC Inspection: (Tunnels, Shafts, Grouting) SpecialInspection: (Electrical, Mechanical, Structural)Engineering and CADD SupportPROJECT BACKGROUNDPart of a comprehensive $1.2 billion project to reduce sewer overflows, the Willamette River Combined Sewer Overflow(CSO) Program includes two large and technically challenging projects, the West Side CSO Project completed in 2006 andthe East Side CSO on schedule for 2011 completion. The project involved intercepting existing outfalls with 14 deep slurrywall shafts and 48,000 feet of 14- and 22-foot inside diameter tunnels mined 100 feet below groundwater in highly variablesoft soils using three slurry mix shield TBMs, the first used in the United States. The deep tunnels are lined with a one-passconcrete segmental lining. The tunnel alignments pass near or under several critical, sensitive structures, including five ofthe city’s major bridges. Deep ground improvement techniques were used to provide pre-support for these structures.Significant Challenges and/or InnovationsThe client, design team, construction manager, and contractor co-located and collaborated for nine months to develop thefinal design, cost estimates, TBM procurement, and work and safety plans. This process allowed the team to use technologiesnew to the United States including slurry TBMs, jet grouting to 320 feet, 200-foot deep slurry walls, and 120-foot deep reinforcedconcrete tremie plugs. Both contractors earned OR-OSHA VPP Star status in Oregon (two of only four contractors statewide).Roles of Major ParticipantsUnder the supervision of the Construction Manager, CMTS provided QA/QC inspection and engineering support for alldisciplines on the project. Key team members Greg Colzani and Jan Babendererde served as Construction Manager and TunnelEngineer on the project as well. Halcrow and Chris Smith provided segment design and fabrication contractor support.Downtown Seattle Transit Tunnel ExpansionSeattle, WAPROJECT DETAILSClient Representative:Seattle Sound TransitTotal Dollar Amount:$95 millionContract Dates:2004- 2007Services Provided:Project Management, ConstructabilityPROJECT BACKGROUNDThe $95 million Downtown Seattle Transit Tunnel Expansion project involved the expansion of the Seattle bus tunnel toallow conversion to dual-mode transportation, including bus and light rail. The project included the renovation of theexisting bus tunnel and upgrade of all mechanical and electrical systems.Significant Challenges and/or InnovationsThis project involved significant coordination between disciplines for a major underground project with restricted accessin the urban Seattle environment.Roles of Major ParticipantsThe VOSK Group provided project management support for the project. Vic Oblas served as Project Manager and providedconstructability, construction coordination, and commissioning support .17
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