Chicago Transit Authority:
Rail Replacement - Unbolting
Chicago Transit Authority:
Rail Replacement - Half-ties
Chicago Transit Authority:
Rail Replacement - Drilling
Chicago Transit Authority:
Rail Replacement - Measure twice, cut once
Chicago Transit Authority:
Rail Replacement
Chicago Transit Authority:
Rail Replacement
Chicago Transit Authority:
Rail Replacement
Chicago Transit Authority:
Rail Replacement
Chicago Transit Authority:
Rail Replacement
Chicago Transit Authority:
Rail Replacement
Chicago Transit Authority:
Rail Replacement
Chicago Transit Authority:
Rail Replacement
Chicago Transit Authority:
Rail Replacement
Chicago Transit Authority:
Rail Replacement