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Alternate Technical Concepts AASHTO Subcommittee on Design July 28, 2010 Columbia, S.C. KATHY HARVEY State Design Engineer Missouri Department of Transportation
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Project Development Process – New and Improved! TODAY’S PRESENTATION Why What How Challenges Future
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Project Development Process – New and Improved! Construction Program Cliff
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Project Development Process – New and Improved! ATC WHY? – Best Value for Every $ Dwindling financial resources Many ways to accomplish goals 49 other DOTs – municipalities - FHWA Contractor’s experience
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Project Development Process – New and Improved! ATC WHY? MoDOT + Industry = 1 Team = Best Value D/B job experience Encourage $ Savings Contract administration Contractor risk VE vs. ATC
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Project Development Process – New and Improved! ATCs … are proposed changes to agency-supplied basic configurations, project scope, design or construction criteria. provide a solution that is equal or better to the requirements in the RFP. are similar to value engineering, but are made as a part of the proposal before contract award. provide flexibility to the proposers in order to enhance innovation and achieve efficiency.
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Project Development Process – New and Improved! ATC WHAT? - Legality “ … likelihood of a protest reduced because of the reluctance of the courts to overturn agency decisions regarding advantages of one proposal over another, unless it is apparent that the decision was arbitrary or capricious, or agency failed to follow its own procurement practices.” -- NCHRP 561 p S-9
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Project Development Process – New and Improved! ATC WHAT? – Different than D-B Extension of design process - VE Contractor is VE partner Evaluate design effort vs. benefit Design is funded as preliminary engineering
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Project Development Process – New and Improved! ATC How? – Where we started Rock – the deal maker Profiles – can we roll? Medians – width or protection? Removals – if it ain’t broke don’t fix it Retaining Walls – CIP vs. MSE vs. elimination Materials – optional if we can Traffic Control
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Project Development Process – New and Improved! ATC How? – Recent additions Bridge Designs Interchange Configurations New use for what’s already there Bottom Line – VE up front – Competitively Bid
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Project Development Process – New and Improved! ATC HOW? – Grading and Drainage 4:1 Rock at 2:1 PIPE
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Project Development Process – New and Improved! ATC HOW? – Pavement 4” Aggregate Base Pavement 10” PCCP/13.5” AC
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Project Development Process – New and Improved! ATC HOW? – Pavement Thick Rock Base Pavement 8.5” PCCP/9.5” AC
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Project Development Process – New and Improved! ATC HOW? – Bridges Concrete Box vs. Arch Structures Steel Girder vs. Concrete Girder Box Girder vs. NU Girder
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Project Development Process – New and Improved! ATC HOW? - General Currently Job Special Provision May include sketches Pre-approved design changes
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Project Development Process – New and Improved! ATC HOW? – Pay Items Plan Quantity of Initial Design Lump Sum Sections Lump Sum Savings Change Order Change to revised quantity New plans for ATC effects
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Project Development Process – New and Improved! ATC HOW? - Pre-Approved Timelines – submittal & approval Technical Parameters Detailed Submittal Process Evaluation Project Team review Confidential Pass/Fail
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Project Development Process – New and Improved! ATC How? – Design Base set of plans always provided MoDOT/Consultant re-design Collaborative Plan Development Re-design completion after award Evolving Process
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Project Development Process – New and Improved! ATC Challenges? – Design Design effort for ATC submittal Who leads ATC re-design No cost change order VE of ATC’s Contractor incentive ATC team w/AGC
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Project Development Process – New and Improved! ATC Future? – Development MoDOT FWHA Contractors Suppliers Consultant ATCs and VECPs
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Project Development Process – New and Improved! ATC Example – One that worked Route H bridge over I-44, Springfield Reduced 4-span bridge over I-44 to 2- span with use of MSE walls
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Project Development Process – New and Improved! ATC Example – One that didn’t I-70/I-435 Interchange, Kansas City ATC eliminated 1 bridge, 3 MSE walls, reduced grading and lowered road-user costs. Saved $2.4 million. Not approved by FHWA. Now a VE proposal.
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