In County of Callaway v. Foster, the Supreme Court of the United States was asked to decide whether a county could be held liable for damages caused by a defective bridge. The plaintiff, Foster, was injured when his horse and wagon fell through a bridge that had been built by the county. The county argued that it was not liable for the damages because it had not been negligent in constructing the bridge. The Supreme Court held that the county was liable for the damages caused by the bridge. The Court reasoned that the county had a duty to maintain the bridge in a safe condition and that it had breached this duty by failing to inspect the bridge and repair any defects. The Court also noted that the county had received public funds to build the bridge and that it was responsible for ensuring that the bridge was safe for public use. In conclusion, the Supreme Court held that the county was liable for the damages caused by the defective bridge and that it had a duty to maintain the bridge in a safe condition. The Court also noted that the county had received public funds to build the bridge and that it was responsible for ensuring that the bridge was safe for public use.

In County of Callaway v. Foster, the Supreme Court was tasked with determining whether a county in Missouri could be held liable for damages caused by its failure to maintain a bridge over the Auxvasse Creek. The majority opinion found that counties are not responsible for such damages and thus dismissed the case. In dissent, Justice Field argued that it is within the power of states to impose liability on their counties when they fail to fulfill their duties as required by law or contract. He further argued that if this were not allowed then citizens would have no recourse against local governments who failed in their obligations, which would lead to injustice and inequality among citizens depending on where they lived. Ultimately he concluded that since there was an agreement between Callaway County and Mr Foster regarding maintenance of said bridge, it should be enforced accordingly despite any state laws prohibiting such action from being taken against them