Autostrada A58 or Tangenziale Est Esterna di Milano ("Milan external east ring road") is an autostrada (Italian for "motorway") 32 kilometres (20 mi) long in Italy located in the region of Lombardy.

It is the second east ring road of Milan after the Autostrada A51, managed by the company Tangenziale Esterna S.p.a.

On 11 June 2012, the first construction site of the external ring road opens.

On 23 July 2014, the entire section of the Autostrada A35 or BRE.BE.MI opens and with it also the first completed section of the external ring road, called "Arco TEEM, enters into operation.

The opening of the entire route took place on Saturday 16 May 2015, while 2016 was the deadline for the realization of all the related works.