(NHS). The NHS is a network of highways that are identified as being most important for the economy, mobility and defense of the nation. The highest traffic count is between SR 46 and I–74, where 24,559 vehicles travel the highway on average each day. The lowest traffic count is immediately north of SR 48, where 423 vehicles travel the highway on average each day. History In 1930, the Indiana State Highway Commission designated SR 1 along the modern routing of SR 229, between Batesville and US 52. SR 229 had its beginning in 1931 when it was designated from Napoleon to US 52, replacing SR 1 from Batesville to US 52. An interchange with I-74 was opened between 1963 and 1964. The entire roadway was paved between 1966 and 1967. Major intersections References External links 229 Transportation in Franklin County, Indiana Transportation in Ripley County, Indiana