b'FEATUREIMAGE A build team CreateTO, it was decided that a crawler of this size and capacity would work best as it required the least amount of rail trafficdisruptionandnotrackprotection. The crane weighs 725 metric tonnes, has a footprint of roughly 30 metres by 13 metres and can lift 894 metric tonnes. The machine performed a lift radius of 165 feet and exerted a weight of 4 million lbs. onto the crane pad. The terminology super-lift is correctly used on this project.InOctober2018,theSouthspanwas erected. The second of the two bridges was morecomplicatedtoinstall,asitfeatures an inverted arch beneath the deck, forming IMAGE Ba support foot. The same crane and similar methodswereusedtoinstallthebridge over the south rail corridor under shutdown conditions similar to the North span. Image A shows the North bridge span being prepared for lifting. The surface of the structure was white glass-bead blasted onsite, giving the finish a uniform anodized look.Image B shows the crawler crane hooked onto the bridge, ready for the super-lift. The bridge was fitted with a 4-way bridal rigging setup, with legs up to 145 feet long, and an auxiliary stabilizing sling on the arch, using a 20-ton chain-fall. For protection of the finish onthebridge,theriggingusedwaslight-weightKevlar/Nylonslings,completewith IMAGE Ccustom-made triangular stainless steel arch softeners. The bridge arch alone at 48 tons is an architecturally inspired true triangular shape with sharp corners.Image C shows the super-lift over the rail corridor, just 1.4 miles from Union Station. A lengthy traffic diversion plan was developed andenforcedbyMetrolinxduringtherail corridor shutdown.In precise adherence with the engineered super-lift plan, Image D depicts the bridge structure being landed onto the permanent bearings,justafter2:13a.m.Therail operators had issued a full shutdown of all rail traffic, including the Go-Train, freight traffic, IMAGE D andallUnion-Pearsontraffic.Duetothe asymmetricalloading,atemporaryanti-tip restraint system was installed prior to cutting the crane loose and welding out the bearing plates. Crews worked simultaneously on both abutments. During the shutdown, the precast panels were also installed. Rebar placement started immediately after the precast panels wereset,tooptimizetheshutdowntime granted, and adhere to the tight schedule.AS28|FALL 2019 ADVANTAGE STEEL'