Caltrans eliminates several interchange designs; RCTC, cities move forward with Joshua Palmer realignment as preferred Highland Springs/I‑10 option

Jun 18, 2025

Riverside County Transportation Commission (RCTC) and project partners told Beaumont City Council that Caltrans rejected diverging‑diamond and hook‑ramp options for the Highland Springs Avenue/I‑10 interchange, and that the project team will carry forward a Joshua Palmer Way realignment alternative (Alternative 5) into environmental review.

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During a June 17 presentation to the Beaumont City Council, RCTC project managers and their consultants updated the council on the I‑10 Highland Springs Avenue interchange study and said Caltrans has ruled out previously studied diverging diamond and hook‑ramp options because of operational, safety and right‑of‑way concerns.

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