330 RURAL CALIFORNIA 



Bond issues authorized by the State $ 73,000,000 



Bond issues by California counties 46,093,000 



Total amount allotted to California from Fed- 

 eral Aid Road Act 8,378,175 



Total $127,471,175 



Of the foregoing the bond isues of 1909 and 1915 

 ($33,000,000) were expended. The bond issue of 

 1919 ($40,000,000) remained in the State treasury 

 until the interest rate was raised to a limit of 6 per 

 cent by popular vote at the election of November 

 2, 1920. 



According to a compilation by the State Highway 

 Engineer, there had been constructed up to January 

 1, 1922, 1,765 miles of concrete-base roads, many 

 reinforced with steel rods, and many surfaced with 

 asphalt, 305 miles paved with asphaltic concrete of 

 other materials, and 937 simply graded roads. The 

 State system, including the roads specified in the 

 bond issues and those provided for by special State 

 appropriations, includes 6,300 miles or close to 10 

 per cent of all dedicated public roads in the State, 

 exclusive of incorporated cities. The Highway 

 Commission program called for expenditure of 

 $15,000,000 in new construction during 1922. 



A few facts about the way state highways are 

 constructed are interesting. When previously exist- 

 ing road locations are used, they are corrected as to 

 grade and alignment and to avoid traveling around 

 section corners. Eights of way are of uniform width, 

 preferably sixty feet. In mountainous country the 

 maximum gradient is 7 per cent and minimum radii 



