National Road 12 Lahti southern ring road

National Road 12 Lahti southern ring road project started in 2017 and it will be completed by the end of 2023. The customer is Finnish Transport Infrastructure Agency. The project is implemented as three contracts: 1A, 1B and 2 – Destia is the contractor of project 1A. In this project 1A, National Road 12 is built in a new terrain corridor as a two-lane road for motor traffic between Soramäki and Okeroinen.

In addition, project 1A includes building 18 bridges and new multi-level interchanges in Soramäki, Nostava and Okeroinen. Noise protection and traffic connections for pedestrians and cyclists are improved also. The project is implemented as a design-build contract.

The project increases convenience for the residents, improves land use and the flow and safety of traffic.

The project in numbers:

  • About 13 km of new terrain corridor
  • Over 5 km of noise barriers built
  • Project 1A includes 18 new bridges

Customer: Finnish Transport Infrastructure Agency

Contract time: 2017-2023

See more about the project:

In Finnish: Destia tositoimissa Vt 12 Lahden eteläinen kehätie: Vähäjoen siltaa pystyttämässä