The road will have two lanes (3.50m each) on each side and will run at about 270m above the river Tarn.
The Millau Viaduct will not be straight. A straight road could induce a sensation of floating for drivers. A slight curve will remedy that. The curve will be of 20km in range. Moreover, the road will have a light hill of 3% to improve the visibility and reassure the driver.
A 3m wide emergency lane will bring increased security. It will, in particular, prevent drivers from seeing the valley from the viaduct.
As the bridge will be exposed to winds of up to 151km/h, side screens will reduce the effects of the wind by 50%. The speed of the wind at the level of the road will therefore reflect to speed of the wind found at ground level around Larzac and Sauveterre.
Slashdot Mirror
The road will have two lanes (3.50m each) on each side and will run at about 270m above the river Tarn. The Millau Viaduct will not be straight. A straight road could induce a sensation of floating for drivers. A slight curve will remedy that. The curve will be of 20km in range. Moreover, the road will have a light hill of 3% to improve the visibility and reassure the driver. A 3m wide emergency lane will bring increased security. It will, in particular, prevent drivers from seeing the valley from the viaduct. As the bridge will be exposed to winds of up to 151km/h, side screens will reduce the effects of the wind by 50%. The speed of the wind at the level of the road will therefore reflect to speed of the wind found at ground level around Larzac and Sauveterre.
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From http://www.roadtraffic-technology.com/projects/mi
Road Traffic Tech.com