Road bridge
A road bridge , also a road overpass , is a bridge structure that can be used by motor vehicles or motor vehicles and usually also by pedestrians, bicycles and other vehicles.
The width of the bridge and the type of its protection (railing, etc.) depends on the purpose of the traffic route ( forest road , secondary and main road , federal and expressway , motorway ), while the type of bridge and its span depends on the topographical and geological Conditions of the terrain (creek or river bed , bypassing a village, valley crossing or gorge , sliding slope , rockfall, pass road and so on), but also according to the costs and the integration into the surrounding landscape.
Highway bridge
Motorway bridges can be designed with either one superstructure or with two superstructures, separated for each directional lane . The most common construction methods are reinforced concrete and prestressed concrete bridges . As a rule, steel and composite steel bridges are only built with large spans; on some motorway sections from the period before 1945, brick arched bridges are also available.
There are also some motorway bridges with special features: for example, on the Rhine crossing of the A 6 at Ludwigshafen am Rhein, there is a cycle path on the median and in Bratislava there is a tower restaurant on the pillar of the bridge of the Slovak National Uprising over the Danube.
Slope bridge
A form of road bridge that runs along a steep mountain slope . Your foundation is often carried out for unstable ground conditions deeply established pillars that against damage from landslides may be hedged. For many of these structures, which are increasingly common in the high mountains, complex monitoring is necessary.
Temporary bridge
A bridge that is only being erected temporarily until another bridge is built, modified or expanded. They are often set up by military engineers' units. An example of a makeshift bridge is the Bailey Bridge .
