A report of the State-wide highway planning survey, Project no. SWHP-1: Summary report, State-wide highway planning survey
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GENERAL DESCRIPTION OF THE STATEWIDE HIGHWAY PLANNING SURVEY
THE RURAL HIGHWAYS OF THE STATE
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20 feet amount annual average classification county roads county trunk roads county trunk system Data from Highway dustless expenditures Highway Commission highway facilities Highway Planning Survey highway purposes Highway-railway Grade Crossings included incorporated places Iowa State Highway Length of 20 Main Structure motor vehicle imposts Municipal Extensions November 30 Number Percent passenger cars Paved Percent of total Planning Survey Tables presented in Table primary road fund primary road system property tax levies railroad reported restricted sight distances roadway surfaces rural county trunk rural highway mileage rural highway systems rural highway traffic rural local county rural places rural primary roads Rural Secondary Roads shown in Table Span Length State-wide Highway Planning Sub-total surface type tabulations total number total rural highway total traffic traf Traffic on Rural traffic survey Traffic Volume Groups trips Type of Main Unsurfaced Untreated wood vehicle type groups vehicle-miles volumes of traffic Width of Roadway Wigwag