 The Matthew E. Welsh Bridge was completed in 1966 in Mauckport . It connected Harrison County with neighboring Meade County . This is the only bridge over the Ohio River between Tell City and New Albany . In 1969 Dr. Samuel P. Hays donated the 311 @-@ acre ( 1 @.@ 26 km2 ) Hayswood Nature Reserve to the county . It was developed in 1973 by the Harrison County Park Board by adding public facilities to the western part of the preserve . It is the second largest nature reserve in the county . 
