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STATE ROUTE 1 ALAMITOS BAY BRIDGE IMPROVEMENT PROJECT SCOPING MEETING AUGUST 5, 2015
6:00 p.m. Open House6:30 p.m. Presentation7:00 p.m. Public Comment7:30 p.m. Resume Open House/Q&A
Purpose of Scoping: To identify issues to be addressed in the
environmental documents
Lead Agencies: CEQA: Caltrans is the state lead agency NEPA: Caltrans is the delegated federal
lead agency
Written comments: Please submit comments by
SEPTEMBER 5, 2015.
Your Role in Scoping1.) When/Why?
- Early in the environmental process to identify issues
and content of the environmental documents
2.) Who?
- The public + federal, state and local agencies
3.) What?
- To identify potential issues of concern, impacts to
be analyzed, and the level of detail in the analysis
4.) How?
- By providing your verbal and written comments
- We encourage you to stay involved, get on our mailing list
and check the project website for updates
Project Location
Alamitos Bridge(53-0064)
Why is the Project Needed
Bridge has seismic deficiencies May fail during earthquake
Substructure (columns) is deficient
Potential scour issues
Erosion of channel banks
Project will enhance structural integrity of bridge and allow it to meet current seismic standards
Project will enhance public safety and maintain traffic flow on PCH
EXISTING CONDITIONSThe existing road and bridge between Loynes Dr. and 2nd street has: North Bound:
two 12-foot lanes a 5-foot bike lane a variable shoulder (3-foot on bridge, variable off bridge) A raised sidewalk
South Bound: three 12-foot lanes a 5-foot bike lane a variable shoulder (3-foot on bridge, variable off bridge) a raised sidewalk
Median: Varies from 4 to 25 feet (4-foot on bridge, variable off)
EXISTING CONDITIONS
Horizontal clearance under the bridge (between bents 11 and 12): minimum 40 feet
Vertical clearance under the bridge (between bents 11 and 12): minimum 16 feet above mean lower low water (the average of the lowest low tides)
Project Alternatives
1) Alternative 1: No Build
2) Alternative 2: Seismic Retrofit (Minimum Build Alternative)
3) Alternative 3: Bridge Replacement Alternative
ALTERNATIVE 1 (No Build)
No improvements will be made The bridge will remain seismically
deficient
ALTERNATIVE 2 (Seismic Retrofit)
ALTERNATIVE 2 (Seismic Retrofit)
Features: Would bring up to current seismic standards
Would add new support columns Would strengthen existing columns Would add new support beams Would strengthen joints between deck slabs Would relocate some utilities
Above deck safety improvements Would upgrade guardrails at each end of the bridge Would add new sidewalk on NB side at each end of the bridge
ALTERNATIVE 3 (Bridge Replacement)
ALTERNATIVE 3 (Bridge Replacement) Features:
Would meet seismic safety standards
Considering 4-span and 5-span options (with different architectural treatments)
This rendering is just an example of what the new bridge could look like
The channel would remain open to boaters during demolition and construction
ALTERNATIVE 3 (Bridge Replacement) Features:
Would be 23 feet wider than existing bridge To allow for standard median and shoulders The adjacent roadway would be widened to match
Would be higher than existing bridge The adjacent roadway (approx. 750 feet each side) would have to be raised
Construction would be done in stages to maintain traffic flow on PCH
Environmental Process & Schedule
Environmental Issues to be Analyzed Biological Resources/Wetlands/Plants/Aquatic
Resources Cultural Resources Hazardous Wastes Noise Visual/Aesthetics Geology Utilities Hydrology/Floodplain/Water Quality Land-use/Community/Relocations Section 4(f)
Environmental Document Type
CEQA: Initial Study – Anticipated Negative Declaration or Mitigated Negative Declaration
NEPA: Environmental Assessment – Anticipated Finding of No Significant Impact
We Want to Hear From You
Accepting written comments (via postal mail)and oral comments at this meeting
Comment period ends September 5, 2015
Comments will be summarized in the Scoping Summary Report
Mr. Karl Price
Provide Written Comments
by September 5, 2015
Project Contact
Karl PriceSenior Environmental PlannerDivision of Environmental Planning Caltrans District 7
100 S. Main Street, Mail Stop 16A,Los Angeles, CA 90012Tel: 213-897-1819
Thank you for your interest in this project!
Please visit us at …
http://www.dot.ca.gov/dist07/travel/projects/details.php?id=47