1. Project Status Update I-680 Southbound HOV Gap Closure Project Environmental Phase September 2011
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2. Welcome & Introductions
Welcome - Susan Miller, CCTA
Hamid Fathollahi, Caltrans District 4
Project Team Introductions
Notes: Purpose of today’s presentation:
Provide an overview the I-680 Southbound HOV Gap Closure Project
Describe the current phase, now underway, for the environmental documentation process (CEQA/NEPA)
Describe opportunities for public input
Provide general overview of Caltrans’ role as a project partner during the environmental phase of the project.
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3. Project Overview Purpose: to close 5.4-mile HOV lane gap on SB I-680
Create continuous Southbound HOV Lane between Martinez/Benicia Bridge & Contra Costa/Alameda County Line
Gap Closure for Northbound Lanes is subject of a different study
Project Sponsor: CCTA/TRANSPAC
Caltrans is a partner during the environmental documentation phase of the project and is providing an oversight role
Notes: From SR-242 Interchange to the SR-24 Interchange I-680 widens to six or seven lanes per direction, with complex weaves and high volumes of entering and exiting traffic…
South of SR-24, I-680 has five general purpose lanes in each direction, tapering down to four near Livorna Road. This portion of I-680 carries heavy volumes of commuter traffic during peak hours. Daily traffic volumes vary from a low of 150,000 ADT near the Benicia Martinez Bridge to a high of 266,000 ADT between SR-242 and SR-24.
Tailor the discussion to the problem or deficiencies that would be addressed with the project
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4. Project Location
- Note that the Rehabilitation of I-680 from Rudgear Road to Alcosta Blvd at the County line will commence
- Note the project development process from Planning to NEPA Approval, to Final Design and Construction Phases. We are currently in the NOIS phase, and will begin Scoping process this fall.
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5. Alternatives Preliminary Study Alternatives
Build Alternative #1 –Reduced Standard Alternative
Add HOV lane by widening existing freeway from North of Livorna Road to South Main Street
Add HOV lane by restriping existing roadway from South Main Street to North Main Street and narrowing width of inside lane and shoulder.
Estimated Cost $80 Million
Build Alternative #2 - Full Standard Alternative
Add HOV Lane by widening existing freeway throughout the project limits
Requires replacement of existing structures, including BART overcrossing
Estimated Cost $350 Million
Note that Alternative 2 is not financially feasible and its impacts are too great. The Initial Studies will be geared towards dismissing this alternative
For Alternative #1 – No ROW required
- For Alternative #2 - ROW acquisition from 18 parcels is required
A No Build Alternative will also be considered in the environmental document
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6. Environmental Studies
The following studies are anticipated during the environmental review process:
General Environmental Technical Studies
Biological Resources Studies
Cultural Resources Studies
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7. Project Funding Sources
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8. Project Timeline (through construction)
Preliminary Studies/
Planning
Environmental Review
Design
Right of Way
Construction
COMPLETED
Fall
2011
Winter
2013
CEQA/NEPA Approval
Winter
2013
Winter
2015
Winter
2014
Winter
2015
Spring
2016
Spring
2018
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9. Public & Agency Input Outreach to Cities and Planning Agencies
JULY 2011
SWAT (Southwest Area Transportation Committee)
AUGUST 2011
Alamo MAC (Municipal Advisory Council)
SEPTEMBER 2011
Walnut Creek Transportation Commission
Walnut Creek Businesses?
County Connection – CCCTA
OCTOBER 2011
TRANSPAC (Transportation Partnership & Cooperation)
Update Project Status to Jurisdictions (Spring 2012)
Open House for Environmental Phase (Fall 2012)
Get input re outreach to Walnut Creek businesses. (Will transportation commission be the conduit, or should we do a presentation); What issues/concerns are they likely to have?
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10. Thank You!
For updates, visit CCTA website:
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