The Mallory Township Bridge was a historic structure located southwest of Osterdock, Iowa, United States.

[2] In the summer of 1890 Clayton County sought bids to provide small-scale iron and combination spans to cross several small streams.

D.H. Young of Manchester, Iowa won the contract, and provided eight superstructures for $2,730.

The spans were delivered the same year and erected by county work crews.

This article about a property in Clayton County, Iowa on the National Register of Historic Places is a stub.