^Looking east from the intersection with Tonkel Road on the north side of Fort Wayne, a mile east of I-65, July 2024.
Indiana State Route 1 runs north-south along the eastern edge of Indiana. It's split into two sections: one north of Fort Wayne, and another south of Fort Wayne. The northern section runs from a point along US Route 20 east of Angola, south to Interstate 69 on the north side of the Fort Wayne area. The southern section runs from Interstate 469 on the south side of Fort Wayne, south to Indiana's only interchange with Interstate 275 west of Cincinnati.
My photo of Indiana 1 hails from the south side of Bluffton, where Indiana 124 approaches it from the east. At the junction indicated by the signage, Indiana 124 pauses its westward motion to jog northerly along Indiana 1. Indiana 116, incidentally, is already jogging north along Indiana 1, so the duplex becomes a "triplex". The signage faces east in advance of the intersection. This photo is from June, 2016.
Here are a few more photos from Indiana State Route 1:
The southwestern end marker of the northern piece of Indiana Route 1, at Interstate 69 just north of Interstate 469.
Indiana 1 at the junction where Indiana 116 and Indiana 124 both from from the east to join in toward the south. This is on the north side of Bluffton.
On the south side of Bluffton, Indiana 124 splits away from Indiana 1 to continue east.
Indiana 1 crosses US Route 40 at Cambridge City.
Indiana 1 joins US Route 52 east in Brookville.
Indiana 1 follows US Route 52 west on the way to Brookville.