Stock Photo - 25 September 2018, Mecklenburg-Western Pomerania, Tribsees: A consortium of two large construction companies is working on the foundation for the temporary bridge on the A20 construction site. A total of 232 drilled piles with a diameter of 1.20 metres and an average length of 24 metres are required for the foundation work. The first individual parts of the future temporary bridge have been delivered to the major construction site of Autobahn 20 near Tribsees. According to the State Office for Road Construction and Transport, traffic will probably be able to roll on one lane per direction over this bridge from December onwards. The temporary bridge has a total length of 773 metres. The total of 81 individual parts, from which the 7.50 metre wide bridge will be formed at the end, are made of steel. last autumn, the A20 roadway sank into the marshy ground at Tribsees over a length of almost 100 metres. The huge hole had caused a sensation nationwide. The cause of the collapse has not yet been determined. Photo: Stefan Sauer/dpa. - Tribsees/Mecklenburg-Western Pomerania/Germany