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The existing Interstate 10/Indian Canyon Drive (formerly Indian Avenue) Interchange is a diamond configuration. The proximity of the frontage roads to the interchange pose challenges for this project. The location of the north frontage road relative to the ramp intersection does not meet current design standards.
Dokken Engineering developed a locally preferred alternative that meets the requirements of the City, CVAG and the County of Riverside, while gaining acceptability from FHWA and Caltrans. The preferred alternative includes a westbound loop on-ramp from Indian Canyon Drive and a westbound hook off-ramp that joins with 20th Avenue, the frontage road.
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To ensure driver comfort a short, slip on-ramp was created at 20th Avenue allowing drivers to re-enter the freeway at the terminus of the westbound off-ramp. In the eastbound direction, both the on-ramp and off-ramp will terminate at an intersection with Garnet Avenue a frontage road; the ramps are both hook ramps.
The obsolete overcrossing will be replaced and the non-standard vertical profile of Indian Canyon Drive will be improved. Other key issues include maintaining access to businesses during construction, right-of-way acquisition and ensuring that the interchange design allows for future freeway widening.
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