Treat Boulevard Corridor Improvements
Summary
SCH Number
2025020129
Public Agency
Contra Costa County
Document Title
Treat Boulevard Corridor Improvements
Document Type
NOE - Notice of Exemption
Received
Posted
2/5/2025
Document Description
Project #: WO4089, CP#: 19-27
The purpose of this project is to improve safety and connectivity for pedestrians and bicyclists along Treat Boulevard in the Contra Costa Centre Transit Village (Transit Village). The Transit Village is a Transit Oriented Development clustered around the Pleasant Hill Bay Area Rapid Transit (BART) station. The project consists of bicycle and pedestrian infrastructure enhancements along the Treat Boulevard Corridor between North Main Street and Jones Road and along North Main Street from Treat Boulevard to Lesnick Lane. Improvements include creating buffered and non-buffered bicycle lanes and a new offstreet shared use path, enhancing existing crosswalks, and removing three free right-turn lanes.
Pedestrian and bicycle improvements include: • From 350 feet west of North Main Street to Buskirk Avenue, the roadway will be restriped to create buffered bicycle lanes with green markings at traffic conflict points in both directions. • From Buskirk Avenue to Oak Road, buffered bicycle lanes will be constructed in both directions. The buffered bike lane on the south side of Treat Boulevard will replace the outer vehicular traffic lane. A new shared use path will be constructed on the north side of Treat Boulevard between Buskirk Avenue and Oak Road. • From Oak Road to Jones Road, the existing roadway will be restriped to create a non-buffered bicycle lane with green markings at conflict points where parallel parking exists in the westbound direction, and a buffered bicycle lane in the eastbound direction. • From North Main Street between Lesnick Lane and Treat Boulevard, the roadway will be restriped to create a buffered bicycle lane, with green markings at traffic conflict points, in the northbound direction. Crosswalk improvements will include: • Enhancing crosswalks with high visibility striping, yield markings, and signage as appropriate. Green ladder bike crossings will also be installed. Channelization/refuge islands will be modified as necessary. • Curb ramps and refuge islands will be reconstructed to meet American Disability Act standards. Free-right turn lane modifications include: • The free right turn from the I-680 off-ramp onto eastbound Treat Boulevard will be removed. • The free right turn lane from westbound Treat Boulevard to Buskirk Ave will be removed. • The free right turn lane from eastbound Treat Boulevard onto southbound Jones Road will be removed. • The right turn slip lane from southbound Oak Road onto westbound Treat Boulevard will be converted to a designated bicycle path. • The free right turn from westbound Treat Boulevard onto northbound N. Main Street will be signalized to control right turn movements. Project features described above may slightly be modified. Real estate transactions, utility relocations, and temporary traffic control may be necessary. Emergency vehicles will have access at all times. Vegetation trimming and tree removal of approximately two landscape trees may be necessary. The maximum depth of excavation is anticipated to be approximately three feet for the project and 20 feet for traffic signal pole relocations. Best management practices such as storm drain inlet protection will be implemented. Construction is anticipated to start in spring 2026 and take approximately six months to complete. Night or weekend work may be necessary and will be performed in accordance with local guidelines.
Contact Information
Name
Shravan Sundaram
Agency Name
Contra Costa County Public Works Department
Job Title
Environmental Analyst
Contact Types
Lead/Public Agency / Project Applicant / Parties Undertaking Project
Phone
Name
Syd Sotoodeh
Agency Name
Contra Costa County Department of Conservation and Development
Job Title
Senior Planner
Contact Types
Lead/Public Agency
Address
Phone
Location
Cities
Unincorporated Contra Costa Centre, Walnut Creek
Counties
Contra Costa
Regions
Northern California, San Francisco Bay Area, Unincorporated
Cross Streets
Treat Blvd between North Main St and Jones Rd
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Article 19, Section 15301 (c)
Reasons for Exemption
The project is exempt pursuant to Article 19, Section 15301 (c) of the CEQA Guidelines regarding existing facilities and minor alterations to land, which
exempt existing highways and streets, sidewalks, curbs, and gutters, and the addition of bicycle facilities. The project consists of the minor alteration of existing streets with the creation of bicycle facilities, pedestrian crossing improvements, and removal of free right turn lanes within existing rights-of-way involving negligible or no expansion of former use.
Exempt Status
Categorical Exemption
Type, Section or Code
Article 19, Section 15304 (h)
Reasons for Exemption
The project is exempt pursuant to Article 19, Section 15301 (c) and
15304 (h) of the CEQA Guidelines regarding existing facilities and minor alterations to land, which exempt existing highways and streets, sidewalks, curbs, and gutters, and the addition of bicycle facilities. The project consists of the minor alteration of existing streets with the creation of bicycle facilities, pedestrian crossing improvements, and removal of free right turn lanes within existing rights-of-way involving negligible or no expansion of former use.
County Clerk
Contra Costa
Attachments
Notice of Exemption
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