A joint venture (JV) team of Fluor and Walsh Construction Company has been selected as the preferred partner for phase one of the Red and Purple Line Modernization Program in the US state of Chicago.

The $2.1bn project awarded by the Chicago Transit Authority (CTA), aims to upgrade the infrastructure and increase the capacity of the red and purple lines.

Fluor infrastructure business head Terence Easton said: “When complete, this project will help build prosperity and empower progress for the region, as well as improve transit for the citizens of Chicago.

“This selection further solidifies Fluor’s industry-leading expertise in North America as a frontrunner in transit projects and the delivery of infrastructure megaprojects.”

“This project will help build prosperity and empower progress for the region, as well as improve transit for the citizens of Chicago.”

The scope of the project includes designing and building elevated rail tracks along a 1.9-mile section in Chicago, and upgrade 3.2 miles of the signal system. The building of the elevated track will include construction of bridges and supporting structures.

Additionally, the JV will develop a grade-separated bypass for the Brown line at Clark Junction to enhance mobility and redevelop four CTA stations.

The four stations to be rehabilitated are Lawrence, Argyle, Bryn Mawr and Berwyn stations.

Along with Fluor and Walsh, Stantec Consulting Services will be associated with this project, providing designing services.

The project works are scheduled to begin in the first quarter of next year and are expected to be completed in early 2025.

Established in 1912 and headquartered in Texas, Fluor provides engineering, procurement, construction and maintenance services across the world.

The company posted annual revenue of $19.5bn last year.