SR-210/Alder Avenue Interchange Improvements FSR, PEER, and PS&E
As a result of new developments in the City of Rialto, the SR-210/Alder Avenue interchange experiences increasingly heavy traffic. Improvements are being prepared to maintain the efficient operation of this interchange.
Improvements to the SR-210/Alder Avenue interchange are critical to improve access to nearby commercial developments.
The City of Rialto is experiencing substantial growth as a new retail center and several new warehouse buildings have been developed near SR-210. The adjacent SR-210/Alder Avenue interchange is projected to see significant traffic increases as a result, which the interchange will not adequately accommodate. Intersections in the project area have been identified as deficient for future traffic volumes, and the interchange will operate at an unacceptable level of service by 2040 unless improvements are made.
Improvements to the SR-210/Alder Avenue interchange are critical to improve access to nearby commercial developments.
Interchange off-ramps will be widened to provide an additional turn lane.
Advanced Civil Technologies has been responsible for delivering the Feasibility Study Report, PEER phase, and PS&E phase for improvements to the interchange. To ensure the project accommodates future demand, our staff has worked closely with the traffic team to identify operational constraints and propose effective solutions. The project will widen and restripe Alder Avenue to accommodate additional turn lanes to SR-210 as well as Casmalia Street and Renaissance Parkway. The WB and EB off-ramps will also be widened to accommodate one additional turn lane each. Our team has been responsible for providing project management, roadway design, cost estimates, drainage design, and fact sheet preparation. The project is currently in the PS&E phase.
Interchange off-ramps will be widened to provide an additional turn lane.
During the preparation of the Feasibility Study Report, Advanced Civil Technologies identified an opportunity to combine the PID and PA/ED phases into a single PEER phase, reducing the overall delivery schedule. Also, the team is minimizing right-of-way impacts wherever possible. One new retaining wall is being developed along the EB off-ramp, which will allow the ramp to be widened without impacting a Caltrans access road. Also, a small retaining wall was added along NB Alder Avenue to accommodate an additional lane without right-of-way impacts.
Close coordination with City of Rialto and Caltrans District 8
Right-of-way impacts reduced through retaining wall designs
Close coordination with City of Rialto and Caltrans District 8
Right-of-way impacts reduced through retaining wall designs
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Drainage Design
Fact Sheet Preparation
