March 23, 2018 – CTA Track workers get in a short amount of track time during the start of rush hour in downtown Chicago, Illinois at Tower 18 after #706 clears the interlocking and heads into the Clark/Lake Street Station, with another “L” train not too far behind it. The tower 18 intersection is one of the busiest ones on the Chicago “L” line that circles the downtown area and other points around the Chicago area. – #jimstrainphotos #illinoisrailroads #trains #nikond800 #railroad #railroads #train #railways #railway #cta #chicagotrains