Eastern Contra Costa Transit Authority
Antioch, CA Doing business as Tri Delta Transit
- UEI
- HHFJNLSGS9P3
- CAGE
- 5JDE5
- Primary NAICS
- Not on record
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- U.S. Government Entity
- SAM.gov registration date
- Physical address
- 801 Wilbur Ave, Antioch, CA 94509, USA
- Website
- trideltatransit.com
- Founded
- 1977
- Employees
- 11-50
- Estimated annual revenue
- $1M-$10M
- Industry
-
- Industrials
- Transportation
- Road & Rail
- Ground Transportation
- SIC code
- 41 Local & Interurban Passenger Transit
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Grant awards
Latest 5 listed here. See the rest on GovTribe.
Grant subawards
| Prime recipient | Prime award | Amount | Awarded |
|---|---|---|---|
| Not on record | CA-2025-276 | $125,349 | |
| Not on record | CA-2023-038 | $99,689 | |
| Not on record | CA-2022-052 | $43,149 | |
| Not on record | CA-2022-053 | $175,125 |
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About the company
Eastern Contra Costa Transit Authority, doing business as Tri Delta Transit, is a local government transit authority that receives federal grant funding from the Federal Transit Administration to operate demand-response paratransit and fixed-route bus service in eastern Contra Costa County, California as a prime grant recipient. The authority does not hold federal contracts or serve as a subcontractor; its federal engagement is exclusively grant-based under Federal Transit Administration programs.
Tri Delta Transit operates as a U.S. local government entity headquartered in Antioch, California. The authority's service mission centers on providing ADA demand-response paratransit and fixed-route bus operations for individuals with disabilities, seniors, and the general public in eastern Contra Costa County. All grant work is executed directly by the authority; no sub-awards are planned under any active grants.
The authority's federal funding footprint is narrowly concentrated with a single customer agency. The Federal Transit Administration accounts for 33 awards (89% of all prime and sub awards) totaling $147.7 million in combined dollars obligated across the source data span. Recent grant activity has remained flat at four awards per year across 2022–2026. Six awards carry ultimate completion dates within the next twenty-four months, representing recompete exposure in that window.
Tri Delta Transit's grant portfolio spans three primary Federal Transit Administration programs. Under the Federal Transit Formula Grants program (CFDA 20.507, Section 5307 Urbanized Area Formula Program), the authority has received multiple operating-assistance grants to maintain ADA demand-response and fixed-route bus service, including a $1.229 million award in August 2026 (completion June 30, 2027), a $2.554 million award in September 2025 (completion December 26, 2025), and a $1.229 million award dated September 9, 2024. Under the Buses and Bus Facilities Formula, Competitive, and Low or No Emissions Programs (CFDA 20.526), the authority received a $3 million project grant in June 2026 for facility roof and bus lift replacement and a $6.5 million project grant in August 2025 for bus fueling-station modernization. Under the Enhanced Mobility of Seniors and Individuals with Disabilities Program (CFDA 20.526, Section 5310), the authority has received operating-assistance grants. The authority also received a $400,000 project grant in August 2025 under the Metropolitan Transportation Planning program (CFDA 20.505, Areas of Persistent Poverty) to conduct a comprehensive operational analysis and system redesign. Additionally, the authority received rolling-stock replacement grants to procure replacement 25-foot cutaway vehicles and minivans, and equipment grants for battery electric bus chargers. All grants support infrastructure modernization, equipment replacement, and operating assistance for service to individuals with disabilities and seniors in the region.
Quick answers
Is Eastern Contra Costa Transit Authority registered in SAM.gov?
Yes. Eastern Contra Costa Transit Authority's SAM.gov registration is active through December 29, 2026.
What is Eastern Contra Costa Transit Authority's most recent federal award?
Eastern Contra Costa Transit Authority's most recent federal grant award is Request FTA section 5307 urbanized area formula program funds to be used for all of ecctas transit operations related… (CA2026121), from Federal Transit Administration, on August 11, 2026.
On GovTribe
See Eastern Contra Costa Transit Authority's full federal record
- Federal grant awards
- Funding analysis by agency, NAICS and set-aside
- Similar vendors