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Santa Ana Boulevard Public Works Agency Ventura County Watershed - PowerPoint PPT Presentation

Santa Ana Boulevard Public Works Agency Ventura County Watershed Protection District Bridge Replacement Project Wednesday, December 12, 2012 Updated Feasibility Study Public Works Agency Wednesday, December 12, Ventura County Watershed


  1. Santa Ana Boulevard Public Works Agency Ventura County Watershed Protection District Bridge Replacement Project Wednesday, December 12, 2012

  2. Updated Feasibility Study Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 2 2012

  3. Updated Hydraulic Studies Higher Water Surface Public Works Agency Due to Sedimentation Sediment Deposition Bridge Location Wednesday, December 12, Ventura County Watershed Protection District Slide 3 2012

  4. Purpose and Need  Remove Constriction Public Works Agency  Additional Capacity Required for Dam Removal Wednesday, December 12, Ventura County Watershed Protection District Slide 4 2012

  5. Bridge Lengthening  Deficient Hydraulic Freeboard Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 5 2012

  6. Freeboard Criteria  Corps Criteria Based on Risk Public Works Agency  State Criteria Q50yr+2’ or Q100yr  FEMA Q100yr+4’ (Required for Levee Cert) Bridge Lengthen Analysis 1 – Channel Widening Analysis 2 - Future Sedimentation Lengthen Alternatives Fail to Analysis 3 – 46,000 CY of Dredging Satisfy FEMA Criteria Analysis 4 – 10,000 CY of Dredging Wednesday, December 12, Ventura County Watershed Protection District Slide 6 2012

  7. Replacement on Existing  Traffic Impacts Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 7 2012

  8. Upstream Detour  Environmental Impacts – Fish Barrier Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 8 2012

  9. Downstream Detour  Right of Way Impacts (Southeast) Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 9 2012

  10. Replacement Downstream  Right of Way Impacts (Southeast) Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 10 2012

  11. Upstream Replacement  Right of Way Impacts (Northwest) Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 11 2012

  12. Bridge Replacement Alternative Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 12 2012

  13. Comparative Project Costs Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 13 2012

  14. Value Engineering Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 14 2012

  15. Value Engineering  Highest “Value” for the $ Public Works Agency  Apply known engineering costs  Cheapest solution not always best value Best Value – Upstream Replacement Wednesday, December 12, Ventura County Watershed Protection District Slide 15 2012

  16. Next Steps - Public Outreach Aesthetics & Design Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 16 2012

  17. Questions Public Works Agency Wednesday, December 12, Ventura County Watershed Protection District Slide 17 2012

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