The Cotter Bridge, also known as the R.M. Ruthven Bridge and the White River Concrete Arch Bridge, carries U.S. Route 62 Business across the White River west of the city of Cotter in Baxter County, Arkansas. Upon completion, the bridge allowed access to a part of the Ozarks previously undiscovered by motorists. Constructed in 1930, it is the only bridge built by the Marsh Engineering Company of Des Moines, Iowa in the state of Arkansas.