StreetPave 12 is the latest in jointed plain concrete pavement thickness design. Newly added with this version is jointed plain concrete overlay designs for all six types (bonded on ashpalt, unbonded on asphalt, bonded on concrete, unbonded on concrete, bonded on composite, unbonded on compsosite).  This software utilizes new engineering analyses to produce optimized designs for city, municipal, county, and state roadways.    For existing concrete pavements and overlays, StreetPave 12 may be used to estimate service life and/or failure criteria.