This project is for the replacement of the rectifiers at substations along the Metra Electric Line. The rectifiers are 35 years old and they have long exceeded their useful life. Replacement parts are not available. The Matteson Substation has been identified as a high priority location. Planned work at Matteson includes construction services to replace and add traction power equipment including a 15kv AC switchgear lineup and two‐dry type copper‐winding traction power transformers. Other locations identifed under this project include Jackson Substation and Homewood Substation.