An upgrade to three power substations will improve service and reliability for riders on the CTA's Red and Brown lines.
The CTA last week approved the $25.6 million contract to upgrade existing electrical equipment and buildings at Princeton substation on West 63rd Street, the State Street substation in the Loop and the Kimball substation at the Brown Line terminal. The project also will increase the electrical power capacity at both State and Kimball by 20 percent.
The work by Clark Construction Group will replace aging equipment and allow the CTA to increase power at key areas. The project will rehabilitate electrical systems and replace AC/DC conversion equipment, new cables and switches as well as perform masonry work, install new roofs, doors and floors to weather proof the substations, the CTA said in a news release.
The $25.6 million will cover both design and construction. Clark is expected to start in the spring of 2014 and finish by the end of 2015. The money comes from the CTA capital budget.
Meanwhile, work continues on construction of three new power substations at Farwell and Armitage for the Red and Brown lines. That $66.5 million project is expected to be completed by the end of 2014.
Monday was a big day at the Farwell substation as crews poured concrete. MaryAnne Lyons, the writer of the blog How to Build a Substation, has a bird's eye view of the construction. Check out the photos and the well-documented construction process.