Interstate 15 Express Lanes Project Southern Extension


SCH Number
Lead Agency
Caltrans, District 8 - San Bernardino/Riverside (California Department of Transportation, District 8)
Document Title
Interstate 15 Express Lanes Project Southern Extension
Document Type
NOP - Notice of Preparation
Project Applicant
Shawn Oriaz, California Dept. of Transportation, District 8
Present Land Use

Document Description
The proposed project would extend the 1-15 Express Lanes currently under construction, an additional 14.5 miles. The proposed new segment would extend from State Route 74 (Central Avenue) (post mile [PM] 22.3) in Lake Elsinore, through the unincorporated Riverside County community of Temescal Valley, to Cajalco Road (PM 36.8) in Corona. The project proposes to increase capacity by adding two tolled express lanes in both directions within the 1-15 median to accommodate increasing traffic volumes in southwestern Riverside County. Construction of tolled express lanes would begin at post mile (PM) 22.3 and end at PM 36.8 for a distance of 14.5 miles. Associated improvements, including advance signage and transition striping, would extend two 'miles from each end of the project limits to PM 20.3 in the south and PM 38.8 in the north. (See attached NOP for further information).

Contact Information
Shawn Oriaz
California Department of Transportation, District 8
464 W. 4th Street, MS 827
San Bernardino, CA 92401-1400

Phone : (909) 388-7034


33°44'28.85"N 117°25'59.57"W
Corona Lake Elsinore Temescal Valley
Cross Streets
State Route 74 and I-15; Cajalco Road and I-15
Total Acres
~ 100
State Highways
SR 74
Temescal Canyon H.S.; El Cerrito M.S.
Gavilan,Temescal, Horsethief Canyon, Indian, Mayhew, Coldwater, Brown Canyon, and Bedford Washes
Other Location Info
See attached NOP

Notice of Completion

Review Period Start
Review Period End
Development Type
Transportation:Highway/Freeway (Highway Widening)
Local Action
Other Action Transportation
Project Issues
Aesthetic/Visual Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Greenhouse Gas Emissions Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Growth Inducing Land Use Cumulative Effects
Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Forestry and Fire Protection California Department of Parks and Recreation California Department of Transportation, District 8 California Department of Water Resources California Governor's Office of Emergency Services California Highway Patrol California Natural Resources Agency California Public Utilities Commission California Regional Water Quality Control Board, Santa Ana Region 8 California State Lands Commission Department of Toxic Substances Control Office of Historic Preservation State Water Resources Control Board, Division of Water Quality California Native American Heritage Commission California Department of Fish and Wildlife, Inland Deserts Region 6


Environmental Document
I-15 ELPSE_Notice of Preparation   PDF 898 K NOP Letter   PDF 167 K Public Notice   PDF 779 K
NOC   PDF 924 K
State Comments
2019100381_CDFW_NOP_Caltrans_I-15 Express Lanes Southern Extension   PDF 4004 K 2019100381_NAHC_NOP Interstate 15 Express Lanes Project Southern Extension Project 11   PDF 239 K

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 or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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