As part of Tampere Ring Road, Rajaniemi bridge was completed in 1973. Whole ring road was completed in mid '90s and upgraded to motorway 2008. As the old Rajaniemi bridge was too narrow to carry all the trafiic and it was upgraded in 2006 to motorway and the old bridge was left to carry local traffic, from Nokia to Pirkkala.
E12 is also called Pyhäjärventie at this section. Bridge connect Haikanlahti, Nokia and Soukonlahti, Pirkkala over Pyhäjärvi. There are 39 lakes that are named Pyhäjärvi in Finland.