Editing Interstate 19 (section)

===Nogales loop===
{{Infobox road small
|state=AZ
|type=BL
|route=19
|name=Interstate 19 Business
|alternate_name=State Business Route 19 (1)
|location=[[Nogales, Arizona|Nogales]]
|length_mi=5.88
|length_ref=<ref name="ADOT Highway Log" />
|formed=1992
|yr_ref=<ref name="Nogales BL Start" />
}}
{{maplink|frame=yes|frame-align=right|frame-width=260|frame-lat=31.365|frame-long=-110.946|zoom=11|type=line|from=Interstate 19 Business (Nogales, Arizona).map|stroke-width=3|text=A map of the Nogales business loop. The route is highlighted in red.|align=right}}
[[File:AZ 82 in Nogales.jpg|thumb|right|I-19 Bus. (Grand Avenue) junction with SR&nbsp;82 in Nogales]]
'''Interstate&nbsp;19 Business''' ('''I-19 Bus.''') begins at the Mexican border in Nogales near the southern end of the Interstate. I-19 Bus. follows Grand Avenue in Nogales and has intersections with [[Arizona State Route 82|SR&nbsp;82]] and [[Arizona State Route 189|SR&nbsp;189]] before terminating at I-19 just north of Nogales.<ref name="ADOT Highway Log" /> The route follows the former alignment of [[U.S. Route 89 in Arizona|US&nbsp;89]], [[Arizona State Route 93|SR&nbsp;93]], and [[Former state routes in Arizona#State Route 789|SR&nbsp;789]], back when all three highways traversed through southern Arizona.<ref name="AARoadsMap1963">{{cite ADOT map |year = 1963 |access-date = August 24, 2018 }}</ref> The route has been commissioned as I-19 Bus. since US&nbsp;89 was decommissioned from southern Arizona in 1992.<ref name="Nogales BL Start">{{ADOT res|link=no|year=1992|A|056|month=08|access-date=October 15, 2019|text=Renumber U.S. 89 from Mexico border to jct of I-19 north of Nogales}}</ref>

'''Major intersections'''<br>
{{jcttop|state=AZ|county=Santa Cruz|length_ref=<ref name="ADOT Highway Log" />}}
{{AZint
|location=Nogales
|lspan=4
|mile=0.00
|road={{jct|state=SON|FH|15|dir1=south|location1=[[Mexico]]}}
|notes=[[Nogales-Grand Avenue Port of Entry|Dennis DeConcini Port of Entry]]; international border with Mexico; continues south as Mexican Federal Highway 15}}
{{AZint
|mile=0.14
|road={{jct|state=AZ|I|19|dir1=north|nolink1=yes|name1=Crawford Street|city1=Tucson}}
|notes=[[Arizona Department of Transportation|ADOT]] defines this intersection as southern terminus of I-19}}
{{AZint
|mile=1.66
|road={{jct|state=AZ|AZ|82|dir1=east|name1=Patagonia Highway|city1=Patagonia}}
}}
{{AZint
|mile=2.77
|road={{jct|state=AZ|AZ|189|dir1=south|name1=Mariposa Road|to2=to|I|19|nolink2=yes}}
}}
{{AZint
|location=none
|mile=5.88
|type=incomplete
|road={{jct|state=AZ|I|19|dir1=north|nolink1=yes}}
|notes=Northern terminus; no access to I-19 south}}
{{jctbtm|keys=incomplete}}
{{-}}