The Mississippi and Missouri Railroad (M&M Railroad) was the first railroad in Iowa and was chartered in 1853 to build a line between Davenport, Iowa on the Mississippi River and Council Bluffs, Iowa on the Missouri River and played an important role in the construction of the First Transcontinental Railroad.
The line was originally created so that the Chicago and Rock Island Railroad could extend its line across the Mississippi River via Government Bridge, the first bridge to cross the Mississippi.
Shortly after the bridge opened in 1856, a steamboat hit the bridge and steamboat companies sued to have the bridge dismantled. The M&M and Rock Island hired private attorney Abraham Lincoln to defend the bridge. The case was to work its way through the courts to reach U.S. Supreme Court in 1862 during the American Civil War when the court decided in the bridge's favor.
During Lincoln's investigation into the case he traveled to Council Bluffs to inspect M&M property in August 1859 under the guidance of the M&M attorney Norman Judd. On the visit Judd and M&M engineer Grenville Dodge described the merits of locating the eastern terminus of the railroad at Council Bluffs. After the Pacific Railroad Act in 1862, Lincoln selected Council Bluffs as the eastern terminus and the Union Pacific created by former M&M owner Thomas C. Durant as the company to build the railroad road eastward.
Durant was slow to build the M&M through Iowa although quick to manipulate its stock. He had gained control of the Union Pacific because of his stated plans for the M&M. However, the line under his ownership did not even make it half way across the state, terminating in Kellogg, Iowa 40 miles east of Des Moines, Iowa in 1865 with a branch to Muscatine, Iowa ending in Washington, Iowa.