Welcome to the Interstate 10/Wildwood Canyon Road Interchange Project
In 2008, the City of Yucaipa adopted the Freeway Corridor Specific Plan (Plan) which encompasses 1,242 acres located in the southwest portion of the City. This Plan, which is bisected by Interstate 10 (I-10), has carefully studied and reviewed the increase in economic development and population growth occurring within the City, eastern San Bernardino County as well as Riverside County. As a result, the Plan has identified the need for a new interchange between Live Oak Canyon/Oak Glen Road and County Line Road, the Wildwood Canyon Road Interchange. Not only will the proposed interchange mitigate local and regional traffic congestion, but it will also help the City secure long-term economic sustainability while incorporating community amenities such as trails and open spaces in order to create a cohesive area where residents can live, work, shop, and play.
In 2018, the City of Yucaipa and the San Bernardino County Transportation Authority (SBCTA) initiated the Interstate 10 (I-10)/Wildwood Canyon Road Interchange Project (Project). The proposed Project is part of an effort provide better access to the City of Yucaipa as well as I-10 for commuter vehicles and trucks, and to address future traffic volumes and travel demands.
A Project Study Report (PSR) studied traffic impacts, environmental constraints, and Project costs. The PSR evaluated three design concepts for a new interchange at the I-10 and Wildwood Canyon Road to be further evaluated in the Project Approval and Environmental Document (PA&ED) phase (current phase). During PA&ED, a total of four alternatives will be evaluated, one No-Build alternative and the three build alternatives identified in the PSR. All alternatives will be further studied and evaluated for planning, design, and construction.

The proposed Project is part of an effort to alleviate local and regional traffic congestion and support Yucaipa’s long-term economic sustainability while incorporating community amenities like trails and open spaces. Connecting local traffic to a regional network, relieving road congestion, and accommodating future freeway operations and growth are additional Project benefits.
The Project would provide better access to and from I‑10 for commuter vehicles and trucks. As a result, the access and congestion at the other local interchanges would also be improved. These adjacent interchanges along I-10 at Live Oak Canyon Road and County Line Road are over 2.0 miles apart and currently, local residents must use one of them to access the freeway.
View the Notice of Preparation (NOP) for more detailed information on the proposed Project. 1K090 NOP
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The proposed Project is located approximately 1.0 mile east of Live Oak Canyon Road/Oak Glen Road Interchange and 1.0 mile west of the County Line Road Interchange. The proposed Project is generally bounded by Calimesa Boulevard and Yucaipa Creek to the north, and Wildwood Creek and the Wildwood Safety Roadside Rest Area (Wildwood SRRA) to the south.
Under Alternative 1, the proposed Project would not be constructed. Describing and analyzing a No-Build Alternative helps both decision-makers and the public to compare the impacts of approving the proposed Project with the consequences of not approving the proposed Project. Alternative 1 – No Build
Alternative 2 proposes a new diamond interchange overcrossing with a centerline alignment perpendicular to I-10, that would be located on the west side of the Wildwood SRRA. Alternative 2 – Diamond Interchange
- The overcrossing would be located on the west side of the Wildwood SRRA and would provide the minimum one-mile interchange spacing to adjacent interchanges.
- The proposed Project under Alternative 2 would reconfigure and realign portions of Wildwood Canyon Road and Calimesa Boulevard into four-lane local roadways with signalized intersections.
- A striped median lane would also be proposed to allow vehicles to make left turns into private properties located on either side of Wildwood Canyon Road.
- Additional improvements include Americans with Disabilities Act (ADA) compliant sidewalks, curb ramps, and crosswalks; parkways; and two new bridge structures over I-10 and Calimesa Boulevard.
Alternative 3 proposes a new diamond interchange overcrossing with a skewed centerline alignment over I-10 that would be located further west of the Wildwood SRRA compared to the proposed Project under Alternative 2. Alternative 3 – Skewed Diamond Interchange Overcrossing
- In this case the spacing to the Live Oak Canyon Road interchange would be slightly less than one mile and the spacing to the County Line Road interchange would increase compared to Alternative 2.
- Similar to Alternative 2, the new four-lane roadway alignment for Wildwood Canyon Road would have signalized intersections.
- A striped median lane is also proposed to allow vehicles to make left turns into private properties located on either side of Wildwood Canyon Road.
- Portions of Calimesa Boulevard would be reconfigured and realigned into a four-lane local roadway.
- Additional improvements include ADA compliant sidewalks, curb ramps, and crosswalks; parkways; and two new bridge structures over I-10 and Calimesa Boulevard.
The roadway alignments for Alternative 4 are similar to those proposed in Alternative 2, the primary difference is that a Diverging Diamond Interchange (DDI) overcrossing is proposed under this alternative. Alternative 4 – Diverging Diamond Interchange Overcrossing
- The proposed centerline alignment would be perpendicular to I-10 and would be located on the west side of the Wildwood SRRA, providing the minimum one-mile interchange spacing from adjacent interchanges.
- Portions of Wildwood Canyon Road and Calimesa Boulevard would be reconfigured and realigned into four-lane local roadways.
- A striped median lane is also proposed to allow vehicles to make left turns into private properties located on either side of Wildwood Canyon Road.
- Additional improvements include ADA compliant sidewalks, curb ramps, and crosswalks; parkways; and two new bridge structures over I-10 and Calimesa Boulevard.
Shane Massoud
Public Information Officer/Grant Coordinator
Phone: 909.797-2489 ext. 291
Email: smassoud@yucaipa.org