Editing Interstate 19 (section)

===Sahuarita–Tucson loop===
{{Infobox road small
|state=AZ
|type=BL
|route=19
|name=Interstate 19 Business
|alternate_name=State Business Route 19 (2)
|location=[[South Tucson, Arizona|South Tucson]]–[[Green Valley, Arizona|Green Valley]]
|formed=1992
|deleted=2004
|yr_ref=<ref name="Tucson BL Start">{{ADOT res|link=no|date=August 21, 1992|year=1992|month=08|A|056|access-date=October 16, 2019|text=Renumber U.S. 89 from jct with I-19 near Green Valley to I-10 in Tucson }}</ref><ref name="Tucson BL End">{{ADOT res|link=no|date=March 19, 2004|year=2004|month=03|A|09|access-date=October 16, 2019|text=Abandon B-19 (old 89) from Duval Mine Road going north to Los Reales Road; Portion goes to Pima County, portion goes to the Town of Sahuarita; PR: 9-9-27, p. 26; + various; and 92-08-A-56.}}</ref>
|length_mi=20.24
|length_ref=<ref name="ADOT Highway Log 1998">{{ADOT log |year = 1998 |access-date = June 10, 2019 |link = no }}</ref>
}}
{{maplink|frame=yes|frame-align=right|frame-width=260|frame-lat=32.05|frame-long=-110.948|zoom=9|type=line|from=Interstate 19 Business (Tucson, Arizona).map|stroke-width=3|text=A map of the Tucson business loop. The route is highlighted in red.}}
'''Interstate&nbsp;19 Business''' ('''I-19 Bus.''') began at I-19 exit&nbsp;69 in Green Valley at West Duval Mine Road and South Nogales Highway. I-19 Bus. followed Nogales Highway north through unincorporated Pima County and Sahuarita into [[Tucson, Arizona|Tucson]]. In Tucson, I-19 Bus. curved from Nogales Highway onto South 6th Avenue where it served as the eastern terminus of [[Arizona State Route 86|SR&nbsp;86]] at West Ajo Way, before terminating at [[Interstate 10 in Arizona|I-10]] exit&nbsp;261 and South 6th&nbsp;Avenue in South Tucson.<ref name="ADOT Highway Log" /> The route follows the former alignment of US&nbsp;89, SR&nbsp;93, and SR&nbsp;789, back when all three highways traversed through southern Arizona.<ref name="AARoadsMap1963" /> The route was commissioned as I-19 Bus. since US&nbsp;89 was decommissioned from southern Arizona in 1992.<ref name="Tucson BL Start" /> In 2002, the state handed maintenance of I-19 Bus. between Los Reales Road and I-10 to the city of Tucson.<ref>{{ADOT res|link=no|date=October 18, 2002|year=2002|month=10|A|049|access-date=October 16, 2019|text=Abandon to City of Tucson B19 from I-10 south to Los Reales Rd.}}</ref> The rest of the route was handed over to Pima County and the city of Sahuarita in 2004. This also meant the designation was retired from the state highway system completely.<ref name="Tucson BL End" />
{{-}}
'''Major intersections'''<br>
{{jcttop|state=AZ|former=yes|county=Pima|length_ref=<ref name="ADOT Highway Log 1998" />}}
{{AZint
|location=Green Valley
|mile=43.88
|road={{jct|state=AZ|I|19|city1=Nogales|road|West Duval Mine Road|nolink1=yes}}
|notes=Southern terminus; I-19 Exit&nbsp;69; road continues west as West Duval Mine Road
}}
{{AZint
|location=Sahuarita
|mile=48.15
|road={{jct|state=AZ|road|East Sahuarita Road|I|19|to2=y|nolink2=yes}}
|notes=
}}
{{AZint
|location=Tucson
|lspan=2
|mile=60.41
|road={{jct|state=AZ|road|East Valencia Road|to2=y|I|19|I|10|BL|10|dab4=Tucson|nolink2=yes|location1=[[Tucson International Airport]]|extra=airport}}
|notes=
}}
{{AZint
|mile=63.50
|road={{jct|state=AZ|SR|86|to2=to|I|19|dir1=west|name1=West Ajo Way|road|East Ajo Way|city1=Ajo|nolink2=yes}}
|notes=Eastern terminus of SR&nbsp;86
}}
{{AZint
|location=South Tucson
|mile=64.12
|road={{jct|state=AZ|I|10|road|South 6th Avenue|city1=Casa Grande|location2=[[El Paso, Texas|El Paso]]}}
|notes=Northern terminus; I-10 Exit&nbsp;261; road continues north as South 6th Avenue
}}
{{jctbtm}}
{{-}}