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| Route information | |
Part of  E611 | |
| Length | 52.3 km (32.5 mi) |
| Major junctions | |
| North end | A40 |
| South end | Lyon |
| Location | |
| Country | France |
| Highway system | |
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The A42 autoroute is a short motorway in France. Being completed in 1987, the road connects the city of Lyon to its junction with the A40 roughly 50 km north-east of Lyon.