It is crossed by the Paris to Reims motorway, A4/E50 about halfway along the river's length.
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The Ardre became a footnote in British military history as the river down the valley of which the British 51st and 62nd Divisions, with attached New Zealanders, fought in cooperation with French V Army forces on each flank and with Italian artillery support, in July 1918, during the Second Battle of the Aisne.
The Ardre image stones are a collection of ten rune and image stones, dated to the 8th to 11th centuries, that were discovered at a church in Ardre, which is about four kilometers north of Stånga, Gotland County, Sweden.