Die bestehende Bogenbrücke konnte nicht auf 6 Fahrspuren erweitert werden. Es wurden neben der vorhandenen Brücke rechts und links eine neue Brücke gebaut, die alte Brücke abgetragen.
Extension of 2001<br><bR>Information by Heidi Zahir:<br><br>With the six-digit expansion of the BAB A4 between Jena and the Hermsdorfer Kreuz, the Devil's Valley bridge is the easternmost major bridge in this area.<br><br>The new building should be built in the same geometric shape as the existing building. The exception is in the supporting position of the pillar with the proviso of double supports distance compared to the present building and the cross-sectional design of the pillar itself.<br><br>After a thorough examination by the road construction management and implementation of bid talks the company Kirchner awarded with an aggregate sum of 14,58 million DM.<br><br>Period of execution was 1/96-11/97.<br><br>It started with construction site setting up East and West building, Holzung work until the 28.02.1996, manufacture of access ramps and Baustraßen considering the complex traffic control and traffic organization in the vicinity of the construction site.<br><br>The actual construction started with the installation and Foundation work in the Eastern plot, including the construction of the rising components for the units, as well as the fighters for the axes 90 to 120.<br><br>Parallel carried out the supporting structure and reinforcement - concrete work on the superstructure in this eastern area.<br><br>The centerpiece of the entire construction project was the supporting structure of the Bogegns.<br><br>By way of derogation from the basic idea to manufacture the arch structure, this built closed phases in three different in itself.<br><br>
<b>some data from the period between 1936 and 1938:</b>
<br><br>3/1936 Was tender, the contract was awarded 6/1936. The Falsework construction South Bend was realized in the period 10/1936 to 12-36 and moved 10/1937 for the establishment of the northern arc.<br><br>Up to 1100, workers were working at the construction site. The traffic release was in June 1938.
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