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Los Gatos Creek Bridge Replacement Project Oct 18. 2017 Agenda I. - PowerPoint PPT Presentation

Los Gatos Creek Bridge Replacement Project Oct 18. 2017 Agenda I. Project Description II. Project Benefits III. Challenges IV. Construction Update Project Location Located along Caltrain line In the City of San Jose Bounded by


  1. Los Gatos Creek Bridge Replacement Project Oct 18. 2017

  2. Agenda I. Project Description II. Project Benefits III. Challenges IV. Construction Update

  3. Project Location Located along Caltrain line • In the City of San Jose • Bounded by Park Avenue to the north and Interstate 280 to the south

  4. Los Gatos Creek Bridge • Owned by the Peninsula Corridor Joint Powers Board • MT1 owned by UPRR  Built in 1935  Does not meet existing current seismic safety standards  Has structural deficiencies  Southern timber span was damaged by fire  Recent Flooding has caused significant scour

  5. Project Elements • Demolish existing two-track bridge • Replace existing bridge with three new single track bridges  Meet current safety and seismic codes  Include a tail track to maintain rail operations throughout construction • Build a Retaining Wall  Widen Creek Channel  Facilitate City of San Jose future bike trail

  6. Project Benefits

  7. Project Benefits • Safe rail operations • Improves operations at the San Jose Diridon Station • Addition of Tail Track

  8. Construction Challenges

  9. Construction Phases • Phase I • Pre June 1 Work • Staging, fencing, temporary access roads, signal work, tail track abutment work, and retaining wall work • Phase II – Dry Season Window • June 2017 – Aug. 2017 – Single Tracking on MT1 • Tail track bridge construction, includes bridge foundation and abutment work, pre-cast superstructure crane-in • Aug. 2017 – Oct. 2017 – Single Tracking on Tail Track • Existing bridge demolition, new Main Track 1 & 2 bridge construction and in-creek site mitigation • Phase II -- Post Oct 2017 • Main Track 1 & 2 track and signal work, out-of-creek site mitigation, and site clean-up.

  10. Construction Staging -- In Creek

  11. Unforeseen Conditions

  12. Water Diversion Creek Water Diversion & Fish Relocation

  13. Limited Access

  14. Construction Status

  15. Progress in Field – Shoofly

  16. Progress in Field – MT 1 and MT2

  17. MT1 Bridge Construction

  18. Building Bents

  19. MT1 and MT2 Bridges

  20. Questions

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