Garco Construction was a key subcontractor to WEMCO, Inc. on the the mechanical and electrical rehabilitation on two 250-Ton bridge cranes at the Oahe Powerhouse Dam. Garco supervised, planned and schedule the coordinated removal and reinstallation of the cranes at the Oahe Dam. This critical work including jacking and rigging services, site supervisions and essential plans for safety. Removal work was completed with careful consideration for the integrity of the cranes. To achieve this removal and reinstallation, we used an innovative system that allowed for the necessary space to lower the trolleys between the crane girders and safely use the second crane in the powerhouse to load the complete hoist trolleys out onto trucks for transport to WEMCO’s facility.