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ODOT Structure Project Management Seminar Structure Type Study

ODOT Structure Project Management Seminar Structure Type Study. PDP Step 1 thru 6 (Major). Step 1 - Define study area and stakeholders involved Step 2- Data collection, base maps, RED FLAG SUMMARRY. Purpose and need statement Step 3 - Broad Conceptual Alternatives

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ODOT Structure Project Management Seminar Structure Type Study

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  1. ODOT Structure Project ManagementSeminar Structure Type Study

  2. PDP Step 1 thru 6 (Major) • Step 1 - Define study area and stakeholders involved • Step 2- Data collection, base maps,RED FLAG SUMMARRY.Purpose and need statement • Step 3 - Broad Conceptual Alternatives • Step 4 – Develop Strategic Plan and Recommended Scope • Step 5 – Develop Conceptual Alternatives • Step 6 – Refinement of Feasible Alternatives. FIRST VALUE ENGINEERING STUDY

  3. Step 2 - Red Flag Summary Appendix H in the PDP Manual • Environmental Issues – Historical Bridge, FEMA Flood Plain • Geometric, Pavement Issues • Hydraulic Issues • Geotechnical Issues – Slope failures, scour, poor materials • STRUCTURE ISSUES • MOT, Right of Way, Utility, Permit Issues • Misc. Issues – Aesthetics, VE study required

  4. Structure Issues • Existing Structure Condition • Deck Cores Required • Railing meet Current Standards • Hydraulic Capacity • Possible Channel Relocation • Temporary Shoring for Railroads • Any Substructure Movement

  5. Additional Structure Issues • “Landmark” structure • Navigable Waterway – United States Coast Guard, determine navigation clearances. Movable or fixed spans.

  6. Step 6 - 1st Value Engineering • For projects over 25 million • Multiple discipline team Workshop • Information Phase – Consultant provides • Brainstorming – Creative thinking • Evaluate alternatives • Constructability review • Present VE ideas to Owner/Designer • Office of Production - Facilitator

  7. Project Development Process (Major) Step 7 Develop Preferred Alternative

  8. Structure Type StudyObjective • Select the best Structure Alternative • The study must provide ODOT with all the project constraints, background, facts and insights to support the preferred structure alternative selection. • More upfront preliminary engineering and project team involvement to better assist the design decision making process. • Documentation of the reasoning behind project related decisions

  9. Structure Type StudyWhen Required • Required in the Preferred Alternative Verification review submission for a Major Project (Step 7) • Required in the Minor Project Preliminary Engineering Study review submission (Step 3) • Not required for projects classified as Minimal

  10. Project Development Process Step 7: Develop Preferred Alternative • Based on Agency and Public comments- Recommend preferred alternative • ODOT’s recommendation only. • Submit Preferred Alternative Verification Study-(Design only report L&D 1403.5)

  11. Design Topics Survey Geometrics Geotech Pavements Drainage Structure Type Study Maintenance of Traffic (Cont.) Structure Type Study Hydraulic study and scour Structure Types Clearances Maintenance of Traffic: Permitted Lane Closures Exceptions Committee Preferred Verification Study Step 7

  12. Design Topics (cont.) Traffic Control Other Right of Way Environmental Sheets Cost Estimates Reviews Environmental FEMA Zones Stream/Wetland Mitigation Waterway permits (Determination or Draft Permit) Permissible waste and borrow areas Environmental Commitments Preferred Verification Study Step 7

  13. Design Topics (cont.) Traffic Control Other Right of Way Environmental Sheets Cost Estimates Reviews Cost Estimates ROW Acquisition Utility Reimbursement Construction Preferred Verification Study Step 7

  14. 201.2 STRUCTURE TYPE STUDY SUBMISSION REQUIREMENTS • Profile for each bridge alternative Section 201.2.1 • Preliminary Structure Site Plan Section 201.2.2 (preferred bridge alternative) • Hydraulic Report Section 201.2.3 • Narrative of Bridge Alternatives Section 201.2.4 • Cost Analysis Section 201.2.5 • Foundation Recommendation Section 201.2.6 G. Preliminary Maintenance of Traffic Plan Section 201.2.7

  15. 201.2 STRUCTURE TYPE STUDY SUBMISSION ADDITIONAL RELATED ITEMS • Retaining Wall Justification L&D Section 1404.2 • Noise Wall Justification ODOT Policy #21-001 • Pedestrian Overpass Justification L&D Section 1404.4 • Special Design Submission to OSE if there are non-standard designs, special railing, fracture critical elements, etc. • Aesthetics • Constructibility

  16. 201.2 STRUCTURE TYPE STUDY SUBMISSION REQUIREMENTS • Minimum Requirements for Submission • Based on the complexity of the project some work in Step 8 may be pertinent to perform in Step 7 • Example – A project in an highly urban, high traffic setting may require more in-depth development of the Maintenance of Traffic to ensure it’s feasibility and cost

  17. 201.2 STRUCTURE TYPE STUDY SUBMISSION REQUIREMENTS • Profile for each bridge alternative Section 201.2.1 • Main characters are the existing and proposed profiles, ground line, water elevations and outline of structure • Profile is an abbreviated version, items not required footing, bedrock, top of slope elevations, etc. • Horizontal and Vertical Clearances need to be shown

  18. 201.2 STRUCTURE TYPE STUDY SUBMISSION REQUIREMENTS • Profile for each bridge alternative Section 201.2.1 • Preliminary Structure Site Plan Section 201.2.2 • Site Plan with Plan and Profile view required for preferred alternative only • Plan view of existing and proposed, contours, utilities, hydraulic & traffic data, proposed and existing structure blocks. • Window dressing not required for example guardrail stationing, treatment of slopes, etc. (BDM 202.2.1)

  19. 201.2 STRUCTURE TYPE STUDY SUBMISSION REQUIREMENTS • Profile for each bridge alternative Section 201.2.1 • Preliminary Structure Site Plan Section 201.2.2 C. Hydraulic Report Section 201.2.3 • All hydraulic analysis done at this stage, including scour for all the alternatives • SS 832 – potential placement of temporary construction access fills

  20. 201.2 STRUCTURE TYPE STUDY SUBMISSION REQUIREMENTS • Profile for each bridge alternative Section 201.2.1 • Preliminary Structure Site Plan Section 201.2.2 • Hydraulic Report Section 201.2.3 • Narrative of Bridge Alternatives Section 201.2.4 Provide In-depth Insight- List Factors • Geometry, alignment (curved/skew), grades (min. for deck drainage) horizontal and vertical clearances, clear/sight distance, superelevation requirements, etc. • Future maintenance concerns • Right of Way impacts • Disruption to traveling public, user cost

  21. Provide In-depth Insight- (continued) • Construction access to site – transportation of members (weight or length restrictions) • Any SI-9 “build bridges faster” opportunities • Utilities • Misc. scour, stability of slopes, debris/ice flows in river • Project aesthetics, project corridor • Rehabilitation projects – Fatigue evaluation, color photographs, summary of field investigation

  22. 201.2 STRUCTURE TYPE STUDY SUBMISSION REQUIREMENTS • Profile for each bridge alternative Section 201.2.1 • Preliminary Structure Site Plan Section 201.2.2 • Hydraulic Report Section 201.2.3 • Narrative of Bridge Alternatives Section 201.2.4 • Cost Analysis Section 201.2.5 • Cost analysis for all alternatives • Major cost rule 80/20, C-1 estimate • Initial and maintenance cost converted to present cost • Contingency items use between 15 to 20% • Based on % design completed • For rehabilitation projects cost over-runs should be expected • Required estimating software “Estimator 2.2” for all ODOT budget estimating. Office of Estimating has a training course. • ODOT “Summary of Contracts Awarded” • www.dot.state.oh.us/CONTRACT/estimating/CustSupport/services.htm

  23. Life Cycle Analysis • FHWA Executive Order – “…consider the use of life cycle cost…” • Initial cost (replacement cost) • Cost accrued by traveling public due to delays/detours (rehabilitation v. replacement) • Maintenance costs of various structure types • from year 1 to year 39 (0% @ year 1 to 2% @ year 39 of replacement cost, repeat at year 41after major rehabilitation) Uniform Gradient • Future major rehabilitation – coatings (sealers, painting), deck replacement • At year 40 new deck

  24. Span Optimization Chart • To be used for 4 or more spans

  25. 201.2 STRUCTURE TYPE STUDY SUBMISSION REQUIREMENTS • Profile for each bridge alternative Section 201.2.1 • Preliminary Structure Site Plan Section 201.2.2 (preferred bridge alternative) • Hydraulic Report Section 201.2.3 • Narrative of Bridge Alternatives Section 201.2.4 • Cost Analysis Section 201.2.5 • Foundation Recommendation Section 201.2.6

  26. 201.2 STRUCTURE TYPE STUDY SUBMISSION REQUIREMENTS • Profile for each bridge alternative Section 201.2.1 • Preliminary Structure Site Plan Section 201.2.2 (preferred bridge alternative) • Hydraulic Report Section 201.2.3 • Narrative of Bridge Alternatives Section 201.2.4 • Cost Analysis Section 201.2.5 • Foundation Recommendation Section 201.2.6 • Preliminary Maintenance of Traffic Plan Section 201.2.7 • Transverse sections showing all stages of removal and construction • Define temporary lane widths, lateral clearances to barriers, type of temporary barriers, cut lines, any modifications to existing structure require, closure pour locations • Temporary shoring considerations • Consider effects of differences in profile grade and alignment

  27. Example List of Contentsfor Structure Type Study • Listing of Alternatives • Project description and overview • Roadway alignments/geometry • Maintenance of traffic • Maintenance and inspection access • Design criteria – road type, traffic, typical roadway, loading, etc. • Narrative of Bridge Alternatives • Cost comparison and life cycle considerations • Conclusion and recommendation • Preferred site plan, transverse section and misc. details • Alternative profiles • Appendix – cost estimate andquantity breakdown, foundation recommendation

  28. EXAMPLE

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