Alternative Quality Management Systems for Highway Construction (2015) / Chapter Skim
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From page 204... ...
APPENDIX D: GEORGE SELLAR BRIDGE PROJECT, WASHINGTON STATE Project Overview Basic Information Project Name: SR285 George Sellar Bridge (GSB) Additional EB Lane Project Name of Agency: Washington State Department of Transportation (WSDOT)
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From page 205... ...
• To carry the increased load, significant strengthening of 100 truss members was required involving either the addition of steel plates or replacement of the members • The truss strengthening required the removal of 10,000+ rivets near active lanes of traffic and the installation of 35,000 high strength bolts • The parabolic portals on either end of the bridge had to be cut and strengthened to raise their clearance height to accommodate truck traffic further from the centerline of the bridge • Sway frames at either end of the bridge had to be removed and replaced (this was performed without bridge closure) • Construction of a 10 foot wide cantilevered pedestrian and bike pathway on the south side of the bridge • Construction of a tunnel below the East side approach to accommodate the nearby Apple Capital Recreational Loop Trail.
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Project Delivery Method Agency Project Delivery Experience Table D1 – Agency Project Delivery Method Experience Project Delivery Method Legislative/Legal Authority Number of years of experience with PDM DBB NA; Pilot projects only; General authorization NA; 1-5; 5-10; > 10 CMGC NA; Pilot projects only; General authorization NA; 1-5; 5-10; > 10 DB NA; Pilot projects only; General authorization NA; 1-5; 5-10; > 10 PPP NA; Pilot projects only; General authorization NA; 1-5; 5-10; > 10 Other NA; Pilot projects only; General authorization NA; 1-5; 5-10; > 10 Table D1 lists WSDOT's legal authority to use and experience with the major project delivery methods. WSDOT has decades of experience with the traditional DBB method but is limited in alternatives that it can use.
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From page 207... ...
value per closure. In the bid documents, WSDOT capped the total number of working days at 360 and the number of total bridge closures at 8.
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From page 208... ...
Notes: The GSB project was designed in-house by WSDOT engineers eliminating the need for the submittal of design quality management documents. As a DBB project, prospective contractors were only required to submit the necessary bidding documents in order to be considered for the project and were not required to submit any document pertaining to quality management.
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Table D5 shows the division of construction quality management tasks. As a DBB project, WSDOT was actively involved in most tasks including participation in the construction quality control function.
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Table D5: Construction Quality Management Roles Responsible Party (select all that apply) Responsibility allocation for construction management tasks Agency Design Staff Agency PM Staff Design Consultant Staff Constructor's Construction Staff Agency-hired QA/oversight Consultant Other, specify below Technical review of construction shop drawings cursory Technical review of construction material submittals cursory Checking of pay quantities Routine construction inspection Quality control testing Verification testing Acceptance testing Approval of progress payments for construction progress Approval of construction postaward QM/QA/QC plans Report of nonconforming work or punchlist.
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From page 211... ...
Participants' Ranking of Impact on Quality Table D6: Rankings of the Impact of Quality Factors Factor Very High Impact High Impact Some Impact Slight Impact No Impact Qualifications of agency design staff Qualifications of agency project management staff Qualifications of agency construction staff Qualifications of the design consultant's staff N/A N/A N/A N/A N/A Design consultant's past project experience N/A N/A N/A N/A N/A Qualifications of the construction contractor's staff Construction contractor's past project experience Submittal of Quality management plans prior to work start N/A N/A N/A N/A N/A N/A Level of agency involvement in the QM process Use of agency specifications and/or design details Level of detail expressed in the procurement documents (IFB/RFQ/RFP) Use of manuals, standards and specifications developed for DBB type projects Allowing flexibility in choice of design standards and construction specifications Use of performance criteria/specifications Detailed design criteria Warranty provisions N/A N/A N/A N/A N/A Incentive/disincentive provisions Follow-on maintenance provisions N/A N/A N/A N/A N/A Innovative financing (PPP/concession)
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PMP was the focus of the planning effort but did not include the development of a separate QMP. Construction As noted above, the project did not have an explicit QMP in place.
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cooperation between the contractor and the agency throughout construction and the various quality management processes. Project Acceptance Construction Quality Assurance Design Quality Assurance Design Quality Control Construction Quality Control Design Released for Construction Construction Released for Final Payment Quality Management Constructor's Responsibility Designer's Responsibility Independent Assurance (if req'd)
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From page 214... ...
• GSB project managers used to the panel both for assistance in drafting a traffic control plan that could adequately maintain a daily traffic load of 60,000 vehicles and to suggest a preferred alternative for the various portal modifications under consideration. In order to maintain a fair bidding process for projects that use the panel, contractors who sit on the panel are still allowed to bid on projects they've considered and all meetings are open to the public and have their minutes posted online.
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