Ouvrage Saint Ours Bas

{{Infobox Military Structure

|name=Ouvrage Saint Ours Bas

|partof=Maginot Line, Alpine Line

|location=Southeast France

|coordinates = {{coord|44.47133|6.80881|type:landmark|display=inline}}

|image=Vue générale de l'ouvrage de Saint-Ours-Bas.jpg

|caption=

||map_type = France

|map_size = 300

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|builder=CORF

|materials=Concrete, steel

|height=

|used=Preserved

|demolished=

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|ownership=

|open_to_public=Yes

|controlledby=France

|garrison=

|current_commander=

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|battles=Italian invasion of France

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}}{{Maginot Line Infobox

|localisation=

|type=PO

|year=

|sector=Fortified Sector of the Dauphiné, Vallée de l'Ubaye

|sub-sector=Ubaye-Ubayette, Quartier Meyronnes

|number=

|regiment=83rd BAF

|blocks=1

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|strength=1 officer, 24 men

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Ouvrage Saint Ours Bas is a lesser work (petit ouvrage) of the Maginot Line's Alpine extension, the Alpine Line. The ouvrage consists of one infantry block. The location is unusual in lacking the underground galleries typical of a Maginot fortification, making it more like a blockhouse than an ouvrage. It was armed with two machine gun cloches and three heavy twin machine guns and six light machine gun embrasures.{{cite web|url=http://www.fortiff.be/maginot/index.php?p=5745|title=Saint-Ours (po bas)|last=Puelinckx|first=Jean|last2=Aublet |first2=Jean-Louis |last3=Mainguin |first3=Sylvie|year=2010|work=Index de la Ligne Maginot|publisher=fortiff.be|language=fr|access-date=1 February 2010}} The interior is laid out on two levels.Mary, Tome 5, p. 34

Construction began in July 1931, and cost 4.2 million francs to complete.Mary, Tome 4 - La fortification alpine, p. 29 The position controlled movement along RN 100.

:See Fortified Sector of the Dauphiné for a broader discussion of the Dauphiné sector of the Alpine Line.