D4085, roadworks direction Grenoble / Barrage du Sautet, between Col Bayard and Saint-Bonnet

D4085, construction work direction Grenoble / Barrage du Sautet, between Col Bayard and Saint-Bonnet

D4085, roadworks direction N85 / Gap, between Saint-Bonnet and Col Bayard

D4085, construction work direction N85 / Gap, between Saint-Bonnet and Col Bayard