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| Route information | |
Part of  E402 E44  E502 | |
| Length | 405 km (252 mi) |
| Major junctions | |
| North end | Abbeville |
| South end | Tours |
| Location | |
| Country | France |
| Highway system | |
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Autoroute 28 is a French mainland motorway linking Abbeville in the Somme to Tours in Indre-et-Loire. The motorway starts at Abbeville, splitting from the A16 and, after merging with the A13 near Rouen, ends at Tours, merging with the A10. It is 405 km long.[citation needed] The motorway between Rouen and Tours was added to the Schéma Directeur Routier National[further explanation needed] in 1987.
Between Abbeville and Rouen, the first part, the motorway was built by the Ministry of Public Works and Transport.[clarification needed] This portion of the motorway, 97 km long, is toll-free.
Between Rouen and Alençon, the second part, the motorway is operated by Alis[further explanation needed] (partly owned by Sanef[further explanation needed]) and is the first autoroute of France to have had offers[clarification needed] by European companies following the withdrawal of the SAPN[further explanation needed] in 1998 despite its contract initiated in 1995.[clarification needed] The second stretch of road, opened on 27 October 2005, is 125 km long and passes over two large viaducts; the Viaduc de la Risle and the Viaduc du Bec.
The third and final stretch of road, between Alençon and the A10 near Tours, is operated by Cofiroute.[further explanation needed] A portion of road between Écommoy and Tours was prevented from being built due to the presence of a protected species of beetle, Osmoderma Eremita, or the Pique Prune.[further explanation needed] Construction began only in 2004, and the stretch was opened on 14 December.