state route state highway northern central region state california running east west state north sacramento west end heads east past near eastbound traffic continue routes lake nevada built near routing wagon road later late nineteenth century road extended state highway system way early twentieth century missing link near completed official designation highway subsequent improvements road conversion portion route freeway standards route description state route east california freeway expressway system lane surface road highway system connects major economic centers state selected high designated corridor following south eligible designated miles near east end federally designated uses east state route begins southern mile pacific_ocean heads east quickly climbing ridge crossing highway continues rise alongside tributaries crossing summit descending overlap begins heads southeasterly north valley turns east crossing passing north shore rising summit roadway descends alongside junction settlement clear closely follows northeast shore staying right water line avoid adjacent hills lake ends continues east intersecting following tributaries lake county line final descent intersects curves north east entering valley enters flat takes generally straight path crossing williams overlapping near west bank southeast turning east cross bypass way route crosses west central runs east northern crosses 10th street bridge central city makes turns turning south 10th street street east 9th street overlapping north street east 12th street splitting highway leaves northeast paralleling north enters foothills sierra nevada rises north crossing south near climbing current alignment built mid-1980s lane freeway continues east rugged terrain city joins golden center freeway routes travel northeast turns northwest resumes eastward course lane highway roadway climbs follows descending series turns climbing north end parallels point includes parts branch california trail history east end closely follows branch route california trail california bound later built company opened lake road end 1910s dirt gravel road connected south portion impassable wet weather times springs available way round trip route generally followed present clear lake rough ready road old instead present available eastward drivers williams road paved concrete added state highway system bond issue specifically route connecting west sacramento valley trunk route county seat state highway significantly extended directions west east creating known connecting combination route route law defined extension simply stated connect city state decided september run highway north shore combining planned lower lake highway route east completion segment highway ready heavy travel sign route initial signed state route system legislature added extension route north west near constructed existing county road sign route prior route designation adopted subsequent improvements include construction golden center freeway connecting late 1960s new alignment west bypassing rough ready mid-1980s major intersections letter measured road based alignment existed time necessarily reflect current mileage reflects realignment route indicates second realignment refers overlap correction change indicates classified temporary list list definitions segments remain relinquished local control omitted numbers reset county lines start end county given county column
California State Route 20