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WIKIPEDIA: The main bridge of Stockstadt is a building of the Autobahn a 3 (Frankfurt-Nuremberg) in Stockstadt am Main. Highway km 208 she spanned the main river km 80,048. The bridge is located between the interchanges of Stockstadt and Aschaffenburg Centre and was opened to traffic on July 9, 1958, as part of the section of Stockstadt Hösbach. The first main bridge was built in 1958 within the framework of the new building of the motorway from Offenbach to Aschaffenburg and cost of 6.4 million marks. The 25.0 m wide girder bridge dismissed for each roadway of direction of a superstructure, each for two lanes but without hard shoulders for cost reasons laid out was. The main and 42.75 m on the right bank of the main consisted the structure system of steel composite construction in longitudinal direction two continuous girders with four and three openings and spans of 5 x 48 m on the left bank of the main 78 above as the main opening. The transverse direction of the two constant 2.2 m high superstructures was trained as a t-beams and had three steel solid wall mount with a reinforced concrete road slab it arranged. Worn were the buildings of massive pillar panels, which were disguised as the abutment with red sandstone. In 1987, the replacement construction of main bridge began in the part of the six stripe-expansion of the highway. It was for each roadway of direction of a superstructure with three lanes and a hard shoulder built. In addition was the construction of a separate superstructure with two lanes for the right main port of Aschaffenburg Centre. For the link main junction of Stockstadt was an old superstructure to a transverse thrust further downstream uses. The three new bridges above buildings were unchanged spans than continuous beams with seven fields, but this time as a tie-concrete beams with constant cross section height and hollow cross-section box. The completion was in 1991, the construction costs amounted to 36 million DM. The bridge construction was overshadowed by a serious construction accident with one dead and several injured, occurred on August 30, 1988. The two-lane, upstream bridge superstructure, which was built in the built with the help of Hilfspylons and angle attachments, collapsed over the long shipping opening. The pylon with inserted during the crossing and caused a pier pressure in addition to the current pillar. The static calculation of the structural designer was faulty, the test engineer is not recognized. The main was locked a long time. The reconstruction and the building of two other buildings was carried out with a yoke of aid in the waterway, which was initially not allowed. 

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