UK-based Arup has won a contract from Metro de Santiago to design 11 stations on lines 3 and 6 being built for Chile's capital city.
Under the deal, Arup will be responsible for creating new interchanges with existing lines on the metro network.
According to Metro de Santiago, lines 3 and 6 will extend the reach of the metro network by about 28 stations and 37km in total.
The new lines, which are expected to open in 2016 - 2017, will add more capacity to some of the busiest existing metro lines.
According to Arup project director Leszek Dobrovolsky, Arup's team has some interesting technical and design challenges ahead as the new lines will run deeper than the existing network.
Work under the deal will also include station planning, tunnel and station ventilation, fire engineering, passenger movement analysis, and optimisation of passenger experience.
Metro de Santiago currently operates a 103km long network on five separate lines and branches, serving about 6 million people in the metropolitan area around Santiago.
Upon completion of the two lines, the Santiago metro network will have a total of 140km of lines, 136 stations and will reach 26 municipalities.
It is expected to make a total of 2.7 million journeys per day or 800 million journeys per year.
In March this year, Metro de Santiago had selected SYSTRA to assist with the design, works and commissioning of the two new lines.
The 22.1km line 3 will have 18 stations and will run from Américo Vespucio to Tobalaba/Larrain, while line 6 will extend for 15.3km with ten stations, linking Pedro Aguirre Cerda and Los Leones.
Image: Lines 3 and 6, which are expected to open in 2016 - 2017, will extend the reach of the metro network by about 28 stations and 37km in total. Image: Arup