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Walkerton has one signature crossing, and it is not a single intersection but a shared piece of street: US 6 and SR 23 do not merely cross in Walkerton, they run together through downtown for a tenth of a mile — the concurrency the Story of Walkerton section leg's junction table measures — before SR 23 departs north toward North Liberty and South Bend and US 6 leaves southeast toward Bremen. SR 104 ends at the same corridor a short distance west, its designation terminating at US 6 on Roosevelt Road (a carrier's route description states the terminus and the street name in terms; the direction forms of SR 104's approach stand in conflict between two banked files and that conflict, DF-W-25, is touched here and left open for assembly, exactly as flagged). A crossing that is also a concurrency is a place with a length, and its biography is the biography of the downtown blocks it threads.
What stands at the crossing, in the order the record seats it. First, the older junction underneath it: the highway crossing sits inside a town the railroads had already made a crossing place — the two plats of 1854 and 1856, the B&O diamond of 1873–74 and KN Tower's triangle are all within the same few blocks, so the automobile crossing inherited a junction town rather than creating one. Second, the trade the crossing carries: Roosevelt Road — US 6's street through town — holds the present corridor almost entire, as the Food leg's November 2026 directory table prints it: Casey's at 200 Roosevelt, the Walkerton Express at 201, Subway at 511, Walter's Corner at 600, McDonald's at 801 and Lions Convenience at 803, with the corridor's older institutions at its western end, the former license branch at 302 Roosevelt Road (305 in the historical society's printing — the conflict stands banked, unresolved here) become in 2023 the Walkerton Heritage Museum.
Closure: MIXED — the crossing DUG as a place at concurrency, fabric and present-trade strength; its building-by-building historical seating a NAMED GAP. Settler: the town and Polk directory runs read for the Roosevelt Road / SR 23 junction blocks, with the Sanborn run measured at #140 (which covers these blocks sheet by sheet) as the fabric settler.
Sources: the Story of Walkerton section leg of this build (the junction table; the tenth-mile concurrency); route descriptions of US 6 in Indiana and of State Roads 23 and 104 (US 6 through downtown with its short SR 23 overlap; SR 104's eastern terminus at US 6, Roosevelt Road), read for this section; the Food, Businesses, Arts & Culture and Transportation legs of this build (the Roosevelt Road table, November 2026; 408 Michigan Street, 1951; 302/305 Roosevelt Road, in conflict; the FRA inventory's US 6 crossing and its 2018 count of 3,538 vehicles a day).