By 1971, the projected start of construction had slipped to within three to four years from then; however, Caltrans had approved the project. In July 1974, the California Coastal Commission unanimously decided to halt the entire project, since many of the necessary approvals from governmental bodies had not been obtained; this overrode an exemption granted by the San Diego Coast Regional Commission. Both the mayors of Chula Vista and National City were dismayed; Mayor Kile Morgan of National City stated that "we in the South Bay are getting tired of being kicked around", in reference to other stalled projects such as SR 157 and SR 125. Meanwhile, the interchange at I-805 was under construction, with completion scheduled for the next year. A U.S. Fish and Wildlife report predicted that the project would destroy of marshland and harm three bird species that were endangered, among other negative environmental consequences; the conclusions were disputed by local officials.