SR 210 Lane Addition/Base Line Interchange
The SR 210 Lane Addition/Base Line Interchange project, designed to provide increased traffic flow throughout this corridor, was built as one project. To eliminate the existing bottleneck and provide lane continuity, the SR 210 was widened from Sterling Avenue to San Bernardino Avenue in the cities of San Bernardino, Highland, and Redlands, as well as an unincorporated portion of San Bernardino County. Base Line Interchange was also widened from Buckeye Street to Seine Avenue in the City of Highland.
Fact Sheets
Project Reports
Approved Supplemental Report 
Initial Study March 4, 2020: SR 210 Lane Addition/Base Line Interchange Project Community Meeting
Ribbon Cutting Ceremony for the SR 210 Lane Addition and Base Line Interchange Project in Highland, on June 21, 2023.
Photos by Stan Lim
Ribbon Cutting Ceremony for the SR 210 Lane Addition and Base Line Interchange Project in Highland, on June 21, 2023.
Photos by Stan Lim
Ribbon Cutting Ceremony for the SR 210 Lane Addition and Base Line Interchange Project in Highland, on June 21, 2023.
Photos by Stan Lim
Ribbon Cutting Ceremony for the SR 210 Lane Addition and Base Line Interchange Project in Highland, on June 21, 2023.
Photos by Stan Lim
SB Express Lanes
The SB Express Lanes on I-10 are now open. Visit SBExpressLanes.com to learn how the new express lanes can save you time on the road. Have questions? Get answers on our Q&A page.
