{{I-{{{1}}} aux}}
Template documentation
3di displays a navbox for all the auxiliary Interstate routes associated with a parent route.
Usage:
{{3di|Parent Interstate #}}
{{3di|Parent Interstate #|
for the reused numbers such as I-76east
orwest
}}
ex.
{{3di|96}}
for Interstate 96:
{{3di|76|east}}
for Interstate 76 (east):