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National Route 22 is a highway located in Argentina, that connects the provinces of Buenos Aires, La Pampa, Río Negro and Neuquén in 685 km (426 mi). The route starts at the connection with National Route 3 (Argentina), 32 km (20 mi) at the west of Bahía Blanca and until 2004 the highway end was in Paso de Pino Hachado, on the border with Chile, but currently ends on the connection with National Route 40 (Argentina) in Zapala. The track between Las Lajas and Paso de Pino Hachado is now part of the National Route 242. The Highway has two lanes, mostly; only the Cipolletti - Plottier track has 4 lanes.