Tunnel to Ontario International Airport Project


SCH Number
Lead Agency
San Bernardino County Transportation Authority
Document Title
Tunnel to Ontario International Airport Project
Document Type
NOP - Notice of Preparation of a Draft EIR
Present Land Use
Transportation, airport, commercial, industrial, vacant
Document Description
SBCTA has proposed to construct a 4.2-mile-long single bi-directional tunnel (24-foot bi-directional tunnel) directly connecting the Cucamonga Metrolink Station to ONT. Tunnel boring would occur up to 60 feet below the ground surface. The proposed tunnel alignment begins at the Cucamonga Metrolink Station adjacent to Milliken Avenue in the City of Rancho Cucamonga. Autonomous electric vehicles would enter the main artery tunnel via a ramp from the Cucamonga Station located within the existing Metrolink station parking lot. The tunnel alignment would continue south generally under Milliken Avenue. At Ontario Mills Parkway, the tunnel would shift east, to avoid the I-10 overcrossing structure, and hen shift back under Milliken Avenue, running southwest to clear the Ontario Municipal Utilities Company (OMUC) water tanks in the southeast quadrant of the I-10/Milliken Avenue interchange. The tunnel would begin curving west at Guasti Road to avoid the Union Pacific Railroad Company (UPRR) overcrossing bridge, connecting to Airport Drive east of Milliken Avenue. The proposed tunnel would then generally run under Airport Drive before terminating at ONT. At the airport, vehicles would emerge via ramps and drive to drop-off points near Terminal 2 or Terminal 4.

Contact Information

David DeRosa
Agency Name
Job Title
Project Manager
Contact Types
Consulting Firm

Victor Lopez
Agency Name
San Bernardino County Transportation Authority
Job Title
Project Manager
Contact Types
Lead/Public Agency / Project Applicant


Ontario, Rancho Cucamonga
San Bernardino
Cross Streets
State Highways
Interstate 10
Metrolink, UPRR
Ontario International Airport
Mariposa Elementary School
concrete lined channels

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Fish and Wildlife, Inland Deserts Region 6 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 8 (DOT), California Department of Transportation, Division of Aeronautics (DOT), California Department of Transportation, Division of Transportation Planning (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB), Department of Toxic Substances Control, Office of Historic Preservation, California Native American Heritage Commission (NAHC)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC)
Development Types
Transportation:Other (Autonomous rubber wheel transit)
Local Actions
Transportation corridor
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Sewer Capacity, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Local Review Period Start
Local Review Period End


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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