Editing Interstate 19 (section)

==History==
The first sections of I-19 to be opened to traffic were a {{convert|3|mi|km|sp=us|adj=on|order=flip}} stub from I-10 to Valencia Road, in 1962 and a {{convert|2|mi|km|sp=us|adj=on|order=flip}} stretch in [[Green Valley, Arizona|Green Valley]] in 1963. The freeway between [[Rio Rico, Arizona|Rio Rico]] and [[Nogales, Arizona|Nogales]] was completed in 1974. The major section between Green Valley and Rio Rico was finished in 1978. The official completion date of the I-19 segment between Tucson (km&nbsp;100) and Green Valley (actually Helmet Peak Road at km&nbsp;75) was February 12, 1972. A 1978 project report for [[Arizona Department of Transportation|ADOT]] lists the entire I-19 project as "completed", which includes segments between Green Valley and Nogales.