What new challenge does Carnegie face after successfully constructing the bridge?

The challenge that Carnegie faces after successfully constructing the bridge revolves around convincing the public of its safety. During the period in which Carnegie operated, bridges were significant engineering feats, and public skepticism regarding their reliability was common, especially as they were relatively new technologies. Even if the bridge was constructed using the latest engineering techniques and materials, such as steel, public perception played a crucial role in its acceptance and use.

Earning public trust was essential for the project’s success. Carnegie needed to not only demonstrate the bridge's structural integrity through tests and visible indicators of safety but also communicate effectively with the community to alleviate any fears. If the public perceived the bridge as unsafe, it could hinder traffic flow and reduce the bridge’s overall utility and profitability.

Other challenges such as hiring skilled workers or acquiring steel were more logistical and could be resolved through managerial decisions and planning. Maintenance of the bridge would be a future concern, but in the immediate aftermath of its construction, addressing public confidence was paramount for the bridge to serve its intended purpose effectively.