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1956 – 1998 · Run B #181
The parkway half stands whole in the Transportation leg, and is carried here in its dated form: the St. Joseph Valley Parkway took US 20 off the valley's main streets in sections — US 31 to State Road 19 opened 11 December 1991, State Road 19 to County Road 17 opened 9 October 1992 — and the route histories date the formal end of the through-town US 20 designation to 1998. From those openings the Chicago-to-the-east through stream ran south of Mishawaka and Osceola for good; Lincolnway kept its name, its houses and its local trade, and became a state road, SR 933, in a town of 2,590 rather than a nation's main street.
The toll/interstate edge, dated against this ground: the Indiana Toll Road — the Indiana East–West Toll Road, 156.28 miles from the Illinois line to the Ohio line, signed I-80/I-90 — was publicly financed, built from September 1954, and opened in stages east to west through 1956: the first half, from the Ohio line to US 31 outside Roseland, north of South Bend, opened 16 August 1956; the formal dedication was held at South Bend on 17 September 1956; and the road was completed 15 November 1956. Its course crosses the county's northern tier, through Harris Township across the river from Penn, and it gives this ground an edge, not a crossing: no Toll Road interchange stands in Penn Township or serves Osceola by name. The exits that bracket the town are Exit 77 at State Road 933, South Bend, to the west — the same SR 933 that is Osceola's Lincolnway, followed north through Mishawaka and Granger — and, east, Exit 83 at SR 331 (Capital Avenue), Mishawaka, opened 17 November 1982, and Exit 92 at SR 19, Elkhart. The town's relation to the toll/interstate system is therefore dated and plain: from November 1956 the continent's east–west toll stream has run across the county's north side, a short drive up Ash Road or SR 933, while the town's own street spent those same decades first carrying and then, in 1991–98, surrendering the free through route. The two successions are one story told from the street: what the parkway took away in the 1990s, the Toll Road had already been carrying, at a toll, since 1956.
This build's Transportation leg (“The bypass: US 20 leaves the street”) for the parkway sections and the 1998 designation end; the Indiana Toll Road route history (AARoads / the Toll Road Commission record): 156.28 miles, opened in stages August–November 1956, first half opened 16 August 1956, dedication 17 September 1956 at South Bend, completed 15 November 1956; the interchange table (Exit 77, SR 933, South Bend; Exit 83, SR 331, Mishawaka, opened 17 November 1982; Exit 92, SR 19, Elkhart).