Altamont Corridor Express
The Altamont Corridor Express (ACE Rail), owned by the San Joaquin Regional Rail
Commission (SJRRC), is a commuter rail service between the Northern San Joaquin Valley
and the Bay Area, connecting Stockton and San Jose. Total ACE ridership for Fiscal Year
2020-21 was 160,007 passengers.
The COVID-19 pandemic reduced ridership for all transit operators.
Commuter Rail Expansion (Valley Rail)
Valley Rail implements an expansion of Altamont Corridor Express (ACE) between Sacramento
and Merced. Valley Rail will add three round trips between Merced and Natomas, which will
connect to ACE trains traveling to and from San Jose at the North Lathrop Transfer Station.
There will be an additional ACE round trip between Stockton and Natomas, which will connect
to San Joaquins trains at Stockton. Valley Rail will also add new daily roundtrips for the Amtrak
San Joaquins service to better connect San Joaquin Valley travelers with the Sacramento Area.
Valley Rail will extend the existing passenger rail service by approximately 120 miles and
includes 16 new stations. The final environmental impact report for the ACE Extension to
Modesto/Ceres, including the North Lathrop Transfer Station and Lathrop Wye Project, was
certified in August 2018. The final environmental impact report for extending ACE for the
Sacramento Extension was approved by the San Joaquin Regional Rail Commission in October
2020. Construction of the North Lathrop Transfer Station and the Lathrop Wye is scheduled to
begin in 2022 with service beginning in 2023.
Robert J. Cabral Station Extension
The Robert J. Cabral Station Track Extension Project will be constructed in the existing right
of way along the Union Pacific Railroad (UPRR) in Stockton. The project will construct a
separate track and associated infrastructure to provide a direct connection between the
Altamont Corridor Express (ACE) Rail Maintenance Facility and the Cabral Station platform.
The track extension will allow ACE trains to exit the maintenance facility, operate a short
distance on the Sacramento Subdivision (1,680 Feet), and then switch back onto an extended
Cabral Station. Overall, the project will improve operations by providing a more efficient
movement of ACE trains in the same footprint of the existing railroad infrastructure.
Construction was anticipated to being in late summer 2021.
Locomotive Parts and Passenger Rail Cars (Capital Spares)
The San Joaquin Regional Rail Commission started the purchase of ACE Capital Spares to
replace rolling stock components that are necessary to maintaining service. Capital Spare
purchases include but are not limited to wheel and axel sets and HVAC units, locomotive
fuel pumps, and other equipment.
Rail Capital Maintenance and Layover Facility Improvements
The Stockton Regional Rail Maintenance Facility (RMF) Expansion project will provide a cost-
effective option for maintaining the new state-owned intercity rail equipment by expanding the
existing, centrally located ACE maintenance facility in Stockton. Currently, the RMF has the
capacity to store six full trainsets of various lengths, without effecting operations. The Stockton
RMF Expansion would allow for the repair, maintenance and storage of new state-owned
Siemens Venture cars for the San Joaquins. Construction is scheduled to being in fall 2021.