Arcadis has won a $22.5 million contract from Qatar Rail to carry out design work for the Gold Line of the Doha Metro.

The global design and consultancy firm says it will provide architectural, branding and construction consultancy services for the project, following its earlier involvement in the Red Line South.

Design is expected to take one year, and construction support an additional two years.

Doha’s Gold Line is one of four lines under development for the planned 354km metro network.

The $3.5bn project includes 32km of bored tunnel along with 10 of 13 new underground stations, as well as services buildings, tunnels and entrances, in addition to landscaping, traffic and utilities works.

The remaining three stations of the Gold Line have been priced separately and may be assigned to Arcadis later.

“The design element of the metro line will be absolutely critical to Doha and its community. We believe that Doha’s projects are becoming more advanced and intricate as the market matures,” Sameer Daoud, Arcadis’ infrastructure global business leader in the Middle East, said in a statement.