One of the first uses of diamond grinding of highway pavement was in 1965 on a 19-year-old section of Interstate 10 in California to eliminate excessive faulting.
The Transit Coalition also supported the installment of express lanes on Interstate 10 and Interstate 110 in Southern California.
In the 1950s, the construction of the Harbor Freeway destroyed many large homes on the east side of West Adams, while the 1960s construction of the Santa Monica Freeway completely obliterated Berkeley Square, which held significant houses designed by Elmer Grey, and bisected West Adams Heights.
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