Nevertheless, there was controversy over the work in Arizona as well. In 1964, a U.S. House of Representatives investigation discovered that poor management and lack of efficiency were prevalent in four of the projects constructing the I-8 freeway. The Arizona Highway Department was specifically cited in the report for not taking into account protecting government interests when selecting labor for the projects. Several errors were discovered, and one of them, adding too much clay to the gravel mixture, cost the state of Arizona $26,278 (about $ in dollars) to fix. By that year, construction had begun on the freeway west of Casa Grande, while the rest of the Arizona routing was in the design stages.