The San Bernardino County Transportation Authority (SBCTA), Caltrans, and the City of Colton are developing a project to improve Mount Vernon Avenue over Interstate 10. Once constructed, the project will improve circulation during high demand hours along Mount Vernon Avenue between East Valley Boulevard to the north and the I-10 eastbound ramps/Mount Vernon Avenue intersection to the south.
A virtual open house was held in July 2021 to provide an overview of the proposed improvements and provide the public with an opportunity to comment on the Draft Environmental Document (DED). Caltrans studies showed the project would not significantly affect the quality of the environment. The Final Environmental Document (FED) was approved in Spring 2022 and the project is currently in the design phase, with anticipated completion of final design and right of way in Summer 2023. The anticipated start of construction is Winter 2023.