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Design and renovation of the infrastructure of Tallinn tram line no. 4


Civil engineering

Energy supply

Concrete works


Description of work




Within the contract for the construction of the tram tracks of tram line no. 4, the tram tracks and the depot sidings on the Pärnu highway were reconstructed along with the transfer of the tracks onto a concrete foundation; the power transmission grid from Tondi to Ülemiste and Kadriorg was replaced and six traction substations were reconstructed. In addition, an extension to the tram line, including a U-turn circuit for trams was added to the registered immovable at 2 Peterburi road. During reconstruction work, about 30 km of overhead transmission lines with amortised poles of the power transmission grid were replaced. A total of about 11 km of existing rails were reconstructed, 54 new track points were added and 12 of these are controlled automatically. In addition to the construction of new tram tracks, the utility lines under the tracks, the roadways, pavements and green areas along the line were reconstructed. The drainage of rainwater from the tram tracks was also undertaken and new waiting platforms with waiting pavilions for passengers were built in stops.

The work was performed by a consortium consisting of AS Merko Ehitus Eesti, a subsidiary of the AS Merko Ehitus Group, and KMG Inseneriehituse AS and Ratatek OY.

Tallinna Linnatranspordi AS
Name of the project:
Design and renovation of the infrastructure of Tallinn tram line no. 4
Civil engineering
Type of construction:
Cooperation partner:
KMG Inseneriehituse AS and Ratatek OY
Description of work:
Tallinn, Harjumaa
Beginning of the project:
Year of completion:

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