Interstate 238 is a short (2.23 mi/3.59 km) Interstate Highway in the San Francisco Bay Area, California. Its western terminus is at I-880 in San Lorenzo and its east end is at I-580 in Hayward, California, with CA 238 continuing south. I-238 is the only three-digit Interstate that does not have a two-digit "parent"; there is no Interstate 38 (and even if there was, it would go well south of the Bay Area). The number was chosen by Caltrans, who wanted an Interstate for part of CA 238, but at the time there was no available number for a "child" of I-80 (280 to 980 were in use, and there is a CA 180). I-480 is now free thanks to the demolition of the Embarcadero Freeway. File links The following pages link to this file: Interstate 238 List of California State Routes California State Route 238 Categories: Department of Transportation images ... A typical rural stretch of Interstate Highway, with two lanes in each direction separated by a large grassy median, and with cross-traffic limited to overpasses and underpasses. ... USGS Satellite photo of the San Francisco Bay Area. ... State nickname: The Golden State Other U.S. States Capital Sacramento Largest city Los Angeles Governor Arnold Schwarzenegger Official languages English Area 410,000 km² (3rd) - Land 404,298 km² - Water 20,047 km² (4. ... San Lorenzo is a census-designated place located in Alameda County, California. ... Hayward is a city located in Alameda County, California. ... California State Highway 238, or CA-238 for short, is a north-south highway in the southeastern part of the San Francisco Bay Area. ... Caltrans logo The soaring ramps in the stack interchanges favored by Caltrans often provide stunning views. ... Interstate 80 as seen from an overpass in Davis, California Interstate 80 is the second-longest interstate highway in the United States. ... Section of the Embarcadero Freeway in front of the Ferry Building during demolition The Embarcadero Freeway was a freeway in San Francisco. ...
External links
"Indigestion 238" (http://www.gbcnet.com/roads/I-238/): A history of the route and a full explanation of its numbering
By initial planning, the Interstate system was designed to be able to move traffic at speeds of 75 to 80 miles per hour (120 to 130 km/h) except in limited stretches (such as steep mountain passes) where many vehicles cannot maintain such speeds.
In 1974, the maximum speed limit allowed on interstate highways (along with all others in the country) was reduced to 55 mph (90 km/h) as a gasoline conservation measure in response to the 1973 energy crisis.
Interstate238 near Oakland, California is one of two exceptions to the numbering scheme, as no Interstate 38 exists.
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