Mid County Parkway Ramona Expressway


Status: Pre-Construction

Location: Western Riverside County

Type of Project: Expressway

Location: Western Riverside County between San Jacinto and Perris

Type of Project: Highways


The Mid County Parkway is a planned 16-mile transportation corridor between the San Jacinto and Perris areas. This new east-west facility will open economic opportunities, reduce travel times, and expand access to employment and education for residents and businesses of Riverside County. The improvements will promote transportation equity for this long-underserved area and connect to Route 79, Interstate 215, and transit facilities that support Metrolink’s 91/Perris Valley Line and Riverside Transit Agency routes. With this connection, the Perris and San Jacinto communities will have access to multiple modes of travel.

RCTC is working to deliver the MCP in segments. RCTC has partnered with the County of Riverside on final design of the MCP Ramona Expressway, an 8.6-mile segment from approximately one mile east of Rider Street to Warren Road that experiences a high rate of vehicular accidents. The County of Riverside contributed $1 million toward the cost of future construction of this segment. Final design began in September 2022. If funding is secured, construction could begin in early 2026 and take about two years to complete.

The roadway currently has one lane in each direction with a passing lane between 5th Street and Bridge Street. The improvements will provide two lanes in each direction, add a raised median to separate the eastbound and westbound lanes, build a new bridge over the San Jacinto River, modify three intersections with traffic signals, install one new signalized intersection, and construct a wildlife crossing. The improvements are focused on safety and access.

Construction of the Interstate 215 Placentia Avenue Interchange in Perris, the first MCP segment, began in August 2020 and opened in December 2022. RCTC has not determined the timing for construction of additional MCP segments; these contracts will depend upon available funds.

0923 MCP Ramona Map Wildlife Crossing
0623 MCP Corridor Map

Final design of an 8.6-mile segment on Ramona Expressway from approximately one mile east of Rider Street to Warren Road in the County of Riverside began in fall 2022 and construction could begin in early 2026.

RCTC also is working to fulfill its environmental mitigation commitments:

Under the Multi-Species Habitat Conservation Plan, RCTC has acquired more than 177 acres of land to mitigate project impacts to sensitive plants and wildlife.

  • RCTC has created a wetland area to mitigate impacts to aquatic resources in order to obtain a permit from the U.S. Army Corps of Engineers.
  • RCTC also is preparing a Cultural Landscape Study to mitigate project impacts to historic properties.
  • RCTC deferred final design of a previously identified segment from Redlands Avenue north of Placentia Avenue that would have continued east and connected with Ramona Expressway south of Lake Perris, in order to address the high priority safety and access needs along the Ramona Expressway segment.

Final design of MCP Ramona Expressway began in September 2022. Construction could begin in early 2026.

  • July 2009: In response to comments received from the public on the Draft Environmental Impact Report/Environmental Impact Statement (EIR/EIS) for the proposed original Mid County Parkway between Interstate 15 and State Route 79, RCTC takes action to focus the project limits on the portion between I-215 and Route 79.
  • January 2013: RCTC recirculates the Draft EIR/EIS for public review for the refocused project.
  • January 2014: RCTC recirculates revised sections of the Draft EIR (air quality, greenhouse gases, climate change, and Table 4.10) for public review.
  • April 2015: RCTC approves the final EIR for the Mid County Parkway.
  • August 2015: The Federal Highway Administration approves the Record of Decision. Following environmental approvals by RCTC and FHWA, RCTC initiates work on the final design of the Mid County Parkway and begins to implement the mitigation commitments stipulated in the Final EIR/EIS.
  • November 2016: RCTC awards a design contract for the I-215 Placentia Avenue Interchange.
  • July 2017: RCTC prevails in court against a CEQA challenge to the project
  • July 2018: RCTC resolves litigation for project
  • August 2020: Construction starts on the I-215 Placentia Avenue Interchange in Perris, the first MCP segment.
  • June 2022: RCTC defers work on 3-mile segment near Redlands Avenue in Perris in favor of an 8.6-mile segment along Ramona Expressway, due to high priority safety needs on Ramona Expressway.
  • Fall 2022: Final design begins on Ramona Expressway segment.
  • Fall 2022: I-215 Placentia Avenue Interchange opened.

Environmental Documents

    • Record of Decision (Aug 2015), click here.
    • Final Project Report (April 2015), click here
    • Federal Register Notice of Limitations on Claims for Judicial Review of Actions by the FHWA pursuant to 23 U.S.C 139 and other Federal agencies, click here.

Volume I - Chapters 1 - 2 and Chapters 4 - 7

Vol I Cover.pdf – 72.17 KB
1.0 Proposed Project.pdf – 5.30 MB
2.0 Project Alternatives.pdf – 56.48 MB
4.0 CEQA.pdf – 763.30 KB
5.0 Comments and Coordination.pdf – 349.48 KB
6.0 List of Preparers.pdf – 41.99 KB
7.0 Distribution List.pdf – 320.69 KB
Master TOC.pdf – 58.38 KB
Summary.pdf – 479.81 KB

Volume 1 - Chapter 3

Volume II (Appendicies A-I and Appendicies K-N)

Volume II (Appendix J-Supplemental Ch 5 Attachments)

App J Supplemental Ch 5 Attachments.pdf – 92.14 KB
Attachment J-1.pdf – 9.73 MB
Attachment J-2_1.pdf – 2.41 MB
Attachment J-2_10.pdf – 219.89 KB
Attachment J-2_11.pdf – 1.74 MB
Attachment J-2_12.pdf – 8.16 MB
Attachment J-2_13.pdf – 531.94 KB
Attachment J-2_14.pdf – 1.74 MB
Attachment J-2_2.pdf – 2.58 MB
Attachment J-2_3.pdf – 1.95 MB
Attachment J-2_4.pdf – 1.45 MB
Attachment J-2_5.pdf – 13.24 MB
Attachment J-2_6.pdf – 394.75 KB
Attachment J-2_7.pdf – 755.16 KB
Attachment J-2_8.pdf – 3.26 MB
Attachment J-2_9.pdf – 6.31 MB
Attachment J-3.pdf – 17.56 MB
Attachment J-4.pdf – 20.93 MB
Attachment J-5.pdf – 2.87 MB
Attachment J-6.pdf – 5.97 MB
Attachment J-7.pdf – 791.41 KB

Volume III

Vol III Cover.pdf – 64.50 KB
App O Parcel Acquisitions.pdf – 342.94 MB
App P Habitat Mitigation and Monitoring.pdf – 17.19 MB
App Q References.pdf – 73.07 KB
App R Index.pdf – 108.43 KB
App S RTC.pdf – 105.52 MB
App T MSHCP.pdf – 47.66 MB
App U MOA.pdf – 46.78 MB
App V RTC.pdf – 8.22 MB
App W BO.pdf – 662.15 KB

  1. Addendum to the Community Impact Assessment (January 2012; 21 MB)
  2. Air Quality Analysis (March 2012; 7 MB)
  3. Archaeological Evaluation Proposal (November 2007)
    Contact RCTC: Confidential Content
  4. Community Impact Assessment (June 2008; 150 MB)
  5. Draft Preliminary Drainage Report (March 2011; 37 MB)
  6. Draft Project Report (November 2012; Approved January 2013; 2 MB)

  7. Draft Relocation Impact Report (December 2011; 700 KB)
  8. Extended Phase I Survey Proposal (May 2007)
    Contact RCTC: Confidential Content
  9. Finding of Effect (November 2012)
    Contact RCTC: Confidential Content
  10. Hazardous Waste Initial Site Assessment (July 2011; 7 MB)
  11. Historic Property Survey Report (June 2012)
    Contact RCTC: Confidential Content
  12. Natural Environmental Study (July 2008; 146 MB)
    (Appendicices A-R) Jurisdictional Delineation Report (May 2007; revised February 2008):

  13. Noise Abatement Decision Report (April 2012; 19 MB)
  14. Noise Study Report (January 2012; 161 MB)
  15. Paleontological Resources Identification and Evaluation Report (March 2008; 494 MB)
  16. Preliminary Geotechnical Design Report for the Project Report and Environmental Document (March 2008; 43 MB)
  17. Preliminary Recommendations of Eligibility and Level of Effects Report (July 2008)
    Contact RCTC: Confidential Content
  18. Storm Water Data Report (October 2011; 11 MB)
  19. Summary of Floodplain Encroachment (September 2011; 145 MB) Includes: Location Hydraulic Studies
  20. Supplemental Extended Phase 1 Proposal (October 2007)
    Contact RCTC: Confidential Content
  21. Supplemental Paleontological Resources Identification and Evaluation Report (September 2011; 47 MB)
  22. Supplement to the Natural Environment Study (December 2011; 33 MB) Includes: Potential Impacts of Alternatives to Waters of the United States, Riparian Ecosystems, and Threatened and Endangered Species (October 2011) and Supplemental Jurisdiction Delineation Report (October 2011)
  23. Errata Memorandum for the Supplement to the Natural Environment Study (November 2012; 2 MB)
  24. Traffic Technical Report (February 2012; 23 MB)
  25. Visual Impact Assessment (August 2011; 19 MB)
  26. Water Quality Assessment Report (6 MB)