SLIDE 1
Los Gatos Creek Bridge Replacement Project
Oct 18. 2017
Agenda
I. Project Description II. Project Benefits III. Challenges
- IV. Construction Update
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. - - 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
SLIDE 2
SLIDE 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
SLIDE 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
SLIDE 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
SLIDE 6
Project Benefits
SLIDE 7
Project Benefits
- Safe rail operations
- Improves operations at the San Jose Diridon
Station
- Addition of Tail Track
SLIDE 8
Construction Challenges
SLIDE 9
- 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.
Construction Phases
SLIDE 10
Construction Staging -- In Creek
SLIDE 11
Unforeseen Conditions
SLIDE 12
Water Diversion
Creek Water Diversion & Fish Relocation
SLIDE 13
Limited Access
SLIDE 14
Construction Status
SLIDE 15
Progress in Field – Shoofly
SLIDE 16
Progress in Field – MT 1 and MT2
SLIDE 17
MT1 Bridge Construction
SLIDE 18
Building Bents
SLIDE 19
MT1 and MT2 Bridges
SLIDE 20