511 CCTA
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511 CCTA is a program of the Contra Costa Transportation Authority. It offers alternatives to driving alone to reduce traffic congestion and help air quality.
Beyond great incentives for people who want to try taking transit to work instead of driving, we also offer chances to WIN. On Mondays we select 10 Summer Bike Challenge participants to receive $20 Amazon gift cards. We also pick one $511 winner from our FREE Big Win on Transit program. Learn more at https://511.ccta.ca.gov
Contra Costa Transportation Authority - CCTA Spare the Air Bay Area Air District Central Contra Costa Transit Authority AC Transit San Francisco Bay Ferry Tri Delta Transit WestCAT
07/03/2026
IMPORTANT NOTE: On Friday, July 3, WestCAT will be operating on a Sunday schedule (JL/JR service only). On Saturday, July 4, they will operate on a regular Saturday schedule.
Rider’s Alert ‼️ On Friday, July 3, 2026 WestCAT will be operating on Sunday service. That means the JL & JR only.
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Telephone
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Address
3003 Oak Road, Suite 100
Walnut Creek, CA
94597
Opening Hours
| Monday | 8:30am - 5pm |
| Tuesday | 8:30am - 5pm |
| Wednesday | 8:30am - 5pm |
| Thursday | 8:30am - 5pm |
| Friday | 8:30am - 5pm |
