Chicago, Burlington and Quincy -CBQ- Railroad Roundhouse and Shops, Aurora Illinois

Rod shop, roof and truss detail showing older pink roof truss, newer pratt truss, and longitudinal, truss for overhead traveling crane

Rod shop, truss detail showing structural system for overhead traveling crane

Corridor and wheel bay, facing south

Corridor and wheel bay, facing north

Looking from boiler room west towards corridor and rod shop

Corridor and wheel bay, roof truss detail, facing north