State 57 once followed Brea Blvd and Brea Canyon Blvd to Mission Blvd in Pomona. In 1998, Route 57 was extended north from I-10 to the present SR-210/I-210 junction. Signage was changed in 2002 when the Foothill Freeway was extended.
Old alignment of Hwy 57 near the Temple Ave interchange. Only one lane of the two lane concrete survives intact here.
Stamp from 1933 on the old concrete alignment.
57-60 HOV direct connection – Southbound view from my motorcycle
At the entrance to Brea Canyon, Tonner Canyon Road crosses underneath. Distant mountains are the San Gabriel Mountains, with Mt San Antonio visible (10,064′).
Northbound at Imperial Hwy (SR-90), the highway makes a sweeping curve to the west. It was “avoiding” a few oil wells when it was built.
