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Shapefile
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Express highways
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Roads
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Contra Costa County (Calif.)
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1. 1990 Census Roads - San Francisco Bay Area, California
1990. California. Metropolitan Transportation Commission. This line shapefile contains primary and secondary roads for the San Francosco Bay Area in California. Primary roads are generally divided, limited... California. Metropolitan Transportation Commission.
2. Highways: San Francisco Bay Area, California, 2011
2011. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polyline shapefile depicts most highways in the nine county San Francisco Bay Area Region, California and is not meant to be precisely accurat... Bay Area Open Space Council.