Highway signs have changed as much as the roads over the last century, but it might be nice to put this one back. This classy sign showed drivers the way to La Jolla and San Diego when the Million Dollar Highway opened in late 1932.

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Back in February 1925, before there was a U.S. 101, the folks in California’s highway department were proud of the solution they’d come up with to “warn and protect motorists at the sharp curve approaching the San Mateo Creek bridge, northern San Diego County, where many deaths have occurred recently.”

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Anyone sitting in the traffic at Rosecrans Street and Sports Arena Boulevard today might want to have a word with traffic engineers from 1940s and 1960s. Touted as “modernization of the highway system in San Diego” was the 1941 construction of a new interchange between then-U.S. 101 and Mission Valley Road, today’s Interstate 8.

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Explore San Diego County's backroads, beaches, mountains and deserts with Joyride Guru® and award-winning author Jack Brandais. Make them your San Diego day trip.