A roundabout to be introduced at the intersection of Hatanpään Valtatie and Lahdenperänkatu in week 18
Construction of the tramway on Hatanpään Valtatie is progressing as planned. At the turn of April and May, the work area will expand further south along the street. As part of this extension, a new roundabout will be introduced at the intersection of Hatanpään Valtatie and Lahdenperänkatu on Tuesday 29 April. In addition, within the coming weeks, Hatanpään Valtatie will operate with only one lane of traffic in each direction along the entire stretch under construction.
Traffic arrangements at the intersection will be implemented during the night between Monday and Tuesday, 28–29 April. The roundabout is expected to remain in use until summer 2027, with its layout being updated as the construction work progresses. Other signal-controlled intersections along Hatanpään Valtatie will also be temporarily replaced by roundabouts as traffic lights are taken out of use during the works.
The temporary roundabouts support the smooth progress of construction and aim to improve traffic flow in the area throughout the tramway project.
Work area expanding along the full length of Hatanpään Valtatie
In early 2025, several single-lane sections have already been introduced along Hatanpään Valtatie. Similar arrangements will soon be extended to cover the entire work area. Once the tramway is completed, Hatanpään Valtatie will continue to operate with one lane in each direction.
Work on Hatanpään Valtatie includes the construction of municipal infrastructure, as well as bridge and retaining wall works. During the summer, construction will primarily take place on the west side of the street, with traffic redirected to the eastern edge. In the autumn, work will shift to the east side, and the final phase will focus on the central section of the street, where the future tramway will run. The objective is to keep routes as consistent, clear, and safe as possible throughout the project.
Pedestrian and cycling routes will be maintained at all stages of the work, but for example, pedestrian crossings may shift as construction advances. Regional main cycling routes have been diverted away from Hatanpään Valtatie. During construction, a narrower shared pedestrian and cycling path will remain in use, with its location changing between different sides of the street. Access to local properties, businesses and services will be ensured at all times.
