How public roadworks violate business in Helsinki

My dear friend has a laundry business in Mechelininkatu Helsinki. Mechelininkatu (Mechelin street) has been under construction for a very long time.

My friend and all his neighbour entrepreneurs are suffering because of long-lasting public roadworks drive away many customers.

I understand that Helsinki needs to repair its old infrastructure but when traffic jams and lack of parking space lasts for years there must be something wrong.

Yle wrote an article about how public roadworks disturb traffic in Helsinki. The map below shows all the public roads under construction in Helsinki.

How to improve things?

I could decide how public infrastructure repairs would be done in Helsinki, I would organize the work into smaller chunks. Then I would demand that these smaller chunks should be completed as fast as possible. That would eliminate years lasting public roadworks.