“A Highway that Will Serve as a Model for the Future Development of Freeways in California”

 On July 20, 1940, a 3.7-mile section of the Arroyo Seco Parkway opened to vehicle traffic.

It was not only California’s first “freeway” – a high-speed divided road with onramps and off-ramps – but also the first to be built in the urban Western United States and a prototype for future super highways.

The 8.2-mile roadway, finally completed in 1941, remains largely unchanged from its original configuration. Onramps and off-ramps are still exceedingly tight requiring swift acceleration from 5-miles-per-hour to 55-miles-per-hour or similarly quick braking.

A guardrail has replaced the plants that once graced the median, however.

Although engineered to accommodate 27,000 vehicles traveling at Read more »