Autoroute 28 is a French mainland motorway linking Abbeville in the Somme to Tours in Indre-et-Loire.

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.

[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.

[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.