MILAN- Shares in Atlantia were down 1.9% at 1030 GMT on Wednesday, after falling as much as 3%, weighed down by renewed concerns over the fallout of two investigations on the collapse of a motorway bridge operated by the infrastructure group.

Daily la Repubblica on Wednesday reported that Italy's finance police seized documents at Atlantia's motorway unit Autostrade per l'Italia (ASPI), dated back to 2014, which mentioned a risk of collapse for the bridge in Genoa, four years before the disaster.

"The judicial inquiry on the Morandi bridge continues to reveal new elements that put ASPI's defensive position in an increasingly weak position," Marco Opipari, financial analyst at broker Fidentiis wrote in a report.

Atlantia was not immediately available for comment. The company, which makes around one-third of its core earnings from its Italian motorway business, has always denied accusations it neglected maintenance on the bridge.

(Reporting by Francesca Landini, Giancarlo Navach and Stefano Bernabei) ((francesca.landini@thomsonreuters.com; +39 02 66129437; Reuters Messaging: reutersitaly.thomsonreuters@reuters.net))