| Autoroute 73 | ||||
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| Autoroute Robert-Cliche Autoroute Laurentienne Autoroute Henri-IV |
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| Route information | ||||
| Maintained by Transports Québec | ||||
| Length: | 135.0 km (83.9 mi) | |||
| Existed: | 1963 – present | |||
| Major junctions | ||||
| South end: | Saint-Georges, Quebec | |||
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| North end: | Stoneham-et-Tewkesbury, Quebec | |||
| Location | ||||
| Major cities: | Lévis, Quebec City, Saint-Georges, Sainte-Marie | |||
| Highway system | ||||
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A-20 (TCH) / Route 132 in Lévis (Saint-Nicolas)![]()
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Route 138 / A-40 / A-440 / A-540 in Quebec City (Sainte-Foy)
A-573 in L'Ancienne-Lorette