The four bids, opened on July 15, are now being analysed by the international public tender board.

The tender for the Violet Line was launched by the Lisbon Metro on April 15, with a base price of €600 million, plus VAT.

In a statement, the Lisbon Metro indicated that a proposal from MasterStylo – Eletricidade e Telecomunicações, Lda. presented a value of €600 million (M€) for the design and construction of the new line, while the group composed of Mota Engil, Engenharia e Construção, S.A./Zagope – Construções e Engenharia, S.A./Spie Batignolles Internacional – Sucursal em Portugal proposed construction for €598.8 million.

Another proposal, valued at €716.0 million, was presented by Teixeira Duarte – Engenharia e Construções, S.A./Casais - Engenharia e Construção, S.A./Tecnovia – Sociedade de Empreitadas, S.A./E.P.O.S. – Portuguese Underground Works Company, Inc./Somafel – Railway Engineering and Works, Inc./Jayme da Costa – Energy and Systems, Inc.

The fourth proposal, submitted by the companies FCC Construcción, Inc./Contratas y Ventas, Inc./Comsa, Inc./Comsa Instalaciones Y Sistemas Industriales, Inc./Fergrupo – Technical and Railway Construction, Inc., advanced with a value of €629.9 million.

According to the São Paulo Metro, the "public tender is intended to contract various components of the project, such as the design and construction of the Light Rail System infrastructure and the surrounding urban redevelopment, the preparation of all studies for the purposes of public utility expropriation proceedings, and the supply of vehicles."

The bid values were released after the legal deadline for deciding on any complaints regarding the list of bidders had passed.

This investment is part of the implementation of the Lisbon Metro network expansion plan and is scheduled for completion in 2029.

The 11.5-kilometer Violet Line includes 17 stations: nine in the municipality of Loures (serving the parishes of Loures, Santo António dos Cavaleiros, and Frielas, covering a distance of approximately 6.4 kilometers) and eight in the municipality of Odivelas (serving the parishes of Póvoa de Santo Adrião and Olival de Basto, Odivelas, Ramada, and Caneças), covering a total distance of approximately 5.1 kilometers.

The stations will have different typologies: 12 aboveground, three underground, and two in trenches.

The first public tender for the Violet Line project was launched on March 15, 2024, and resulted in the exclusion of all proposals submitted by economic operators, as they exceeded the base price of the tender by an average of approximately 46%.

"In this context, it was necessary to update the investment cost to reflect the price adjustments that occurred between the completion of the preliminary study (in 2023) and the estimated start date of the new public procurement process for the project. This update resulted in an increase in the total investment cost of 150.2 million euros," the note states.