A3 motorway (Luxembourg)
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|---|---|
| Autobunn 3 | |
| Autoroute de Dudelange | |
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| Route information | |
Part of 
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| Length: | 13.318 km (8.275 mi) |
| Existed: | 1978 – present |
| History: | Completed 21 June 1995 |
| Major junctions | |
| North end: | Hesperange for Luxembourg City |
|
Croix de Gasperich Bettembourg Dudelange |
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| South end: |
 Autoroute 31 for Metz
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| Highway system | |
| Motorways in Luxembourg | |
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The Autoroute 3, abbreviated to A3 or otherwise known as the Dudelange motorway (French: Autoroute de Dudelange), is a motorway in southern Luxembourg. It is 13.318 kilometres (8.275 mi) long and connects Luxembourg City to Dudelange. At Dudelange, it reaches the French border, whereupon it meets the A31, which leads to Metz.
The A3 was opened in three separate sections:
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