In 2000, the Helsinki-Tampere motorway was completed and a 9-way route was added: about eight kilometers of new roads were built north of Kylmäkoski to the north-west of Toijala, where 9-road joins Highway 3. The journey between Turku and Tampere was extended by a few kilometers. 19 kilometers of new motorway section were created. The old road from Kylmäkoski to Lempäälä was numbered 190. In 2001–2003, the road between Orivesi and Jämsä and between Korpilahti and Muurame was significantly improved. The orientation of the road was improved by leveling hills and straightening bends, the road was widened, medium-railed bypass lanes and game fences were built on it, as well as new bridges and level crossings.
