The city of Champaign, Ill., was ex...

The city of Champaign, Ill., was experiencing the deterioration of a number of residential subdivision roads some of which were les than five years advanced in years The Engineering Division of the Public Works Department felt that road building standards povertyed to be upgraded but recognized that this would be a sensitive issue, since higher standards would inevitably raise growth costs.

A review through Eres Consultants, Champaign, revealed several deficiencies in the existing standards with a noted lack of uniform enforcement of several of the city's requirements. Standard improvement recommendations were created to help increase pavement life expectancy to 30 years. Previous subdivision road design standards had required a 6 in minimum pavement thickness in succession local streets and a 7 in minimum thickness in succession collector streets; now, a number of the just discovered streets constructed in Champaign consist of undoweled jointed plain solidify pavement (JPCP) placed directly onward a compacted soil subgrade.