who maintains the bridge?
Leffert L. Buck
Niagara Falls Suspension Bridge
Civil engineer Leffert L. Buck, who had been hired to maintain the Suspension Bridge, was selected to design the replacement bridge. 
what kind of bridge is the niagara falls bridge Suspension Bridge where is the niagara falls suspension bridge located? iagara Falls, Ontario to Niagara Falls, New York. who designed it? Charles Ellet, Jr. who built it? Charles Ellet, Jr., later John Augustus Roebling  to complete the project what is the designer's full name? UNANSWERABLE when was the bridge built? 1855 to 1897 why was the construction given to roebling midway? Because Ellet left the project after a financial dispute with the bridge companies which countries does it connect? It connects Niagara Falls, Ontario to Niagara Falls, New York. who financed it? William Hamilton Merritt is this bridge only meant for people to walk on? No, it was the world's first working railway suspension bridge. what are the main components for this bridge? Two limestone towers on each side of the gorge, four thick main cables held up the bridge; two cables ran through iron saddles at the top of each tower. Each cable comprised 3,059 wires that were spun with Roebling's patented technique used in his Allegheny Suspension Aqueduct which is the longest bridge of this type? UNANSWERABLE was there a temporary bridge built before the original one was built? Schuylkill River, Pennsylvania was the bridge replaced? UNANSWERABLE
wiki:12838350
Niagara Falls Suspension Bridge [SEP] Maintenance and replacement
Civil engineer Leffert L. Buck, who had been hired to maintain the Suspension Bridge, was selected to design the replacement bridge. He settled for a bridge of the arch design. At that time, arch bridges were the new models for railway bridges and were more cost-efficient than suspension bridges. Buck built the new bridge around and below the Suspension Bridge, replacing it a piece at a time. His plan allowed bridge traffic—train and pedestrian—to continue without disruption. By August 27, 1897, the last pieces of the Suspension Bridge were dismantled, leaving the Lower Steel Arch Bridge—later renamed the Whirlpool Rapids Bridge—in its stead.