The I-210 Pilot is located on a 22-mile section of the I-210 freeway (the Foothill Freeway) in the San Gabriel Valley in Los Angeles County. It extends from the SR-134/I-210 interchange near downtown Pasadena (west end of the study area) to the Foothill Boulevard interchange in La Verne (east end of the study area). This section of the I-210 runs through an urban environment and includes the most heavily congested sections of the freeway.
Due to the magnitude of the project, it will be divided into two phases:
- Phase 1 will focus on the western portion of the study area, between SR-134 and I-605 in the cities of Pasadena, Arcadia, Monrovia, and Duarte.
- Phase 2 will extend the project eastward from I-605 to Foothill Boulevard in the cities of Irwindale, Azusa, Glendora, San Dimas, and La Verne.
South of the I-210, the area of interest to the project extends to the I-10 freeway. While the aim is to improve operations along the I-210 corridor, the close proximity of the I-10 freeway, located only four to five miles south of the I-210, creates some operational interdependencies between the two freeways. Incidents or events affecting operations along the I-10 often affect operations along the I-210, and vice versa.