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C. 3

To:	Board of Supervisors
From:	Brian M. Balbas, Interim Public Works Director/Chief Engineer
Date:	December 5, 2017

Contra

Costa

County

Subject:

Approve the Bailey Road/State Route 4 Interchange Pedestrian & Bicycle Improvements Project and take related actions under CEQA

APPROVE	OTHER
RECOMMENDATION OF CNTY ADMINISTRATOR	RECOMMENDATION OF BOARD COMMITTEE

Action of Board On: 12/05/2017

APPROVED AS RECOMMENDED

OTHER

Clerks Notes:

VOTE OF SUPERVISORS

AYE:

John Gioia, District I Supervisor
Candace Andersen, District II Supervisor
Diane Burgis, District III Supervisor
Karen Mitchoff, District IV Supervisor
Federal D. Glover, District V Supervisor

Contact:	Claudia Gemberling, 925. 313-2192
cc:	Ave Brown, Environmental Services Claudia Gemberling, Environmental Services

I hereby certify that this is a true and correct copy of an action taken and entered on the minutes of the Board of Supervisors on the date shown.
ATTESTED: December 5, 2017
David Twa,

BY:	, Deputy

RECOMMENDATION(S):

APPROVE the Bailey Road/State Route 4 Interchange Pedestrian & Bicycle Improvements Project (Project) and;

AUTHORIZE the Interim Public Works Director, or designee, to advertise the Project, Bay Point area. (County Project No. 0662-6R4121/Federal Project No. ATPL-5928 (136), DCD–CP#17-11) (District V)

FISCAL IMPACT:

The Project is funded by 79.2% Active Transportation Project Funds, 20.8% Local Road Funds. Estimated Project Cost $4,578,358.

BACKGROUND:

BACKGROUND: (CONT'D)

The purpose of this Project is to improve access for pedestrians and bicyclists along Bailey Road. The Project will reconfigure the State Route 4 (SR4) eastbound and westbound off-ramps at Bailey Road (Figures 1 - 3). Specifically, the Project will include the removal of the westbound loop off-ramp and underlying pedestrian tunnel on the northwest side of the interchange. The westbound diagonal off-ramp on the northeast side of the interchange will be widened to two lanes for approximately 450 feet beginning at the intersection and a new traffic signal will be installed. An approximately 230-foot long, 8-foot tall retaining wall will be constructed along the north side of the ramp which will require excavation of an area approximately 6 feet wide and 6 feet in depth. The free right turns at the eastbound SR4 loop off ramp will be removed as well as the BART access road. The intersection and traffic signal will be modified to control the right turn movements. A 12-foot-wide sidewalk along the southbound side of Bailey Road and a 6-foot-wide sidewalk along the northbound side will be constructed through the interchange area as well as Class 2 bike lanes.

The Project will result in removal of approximately 22,500 square feet (0.5 acre) of pavement and install approximately 9,400 square feet (0.2 acre) of pavement.

Replacement planting/landscaping will be installed as needed. The Project will maintain the existing drainage pattern and impacted drainage inlets will be modified.

Temporary construction easements may be needed for construction staging which will occur in already disturbed areas. Utility relocations will be required.

A minimum of one lane will be open during construction activities. Emergency vehicles will have access at all times.

CONSEQUENCE OF NEGATIVE ACTION:

Delay in approving the Project may result in a delay of design, construction, and may jeopardize funding