Reserved powers are those powers reserved for not reserved for- but  granted to the states. The definition of reserved powers: All  powers not expressed in the Constitution â¦are granted to the states  and called reserved powers.
While the vast majority of Interstate highways have no tolls, approximately 2,900 miles of Interstates are tolled in 21 states. These tolled facilities range in length from 500-mile New York State Thruway to tolled sections of I-95 in Delaware and Maryland.
It runs through two states â Minnesota and Louisiana â and was used to define the borders of eight states (the river has since shifted) â Wisconsin, Iowa, Illinois, Missouri, Kentucky, Arkansas, Tennessee, and Mississippi â before emptying into the Gulf of Mexico about 100 miles (160 km) downstream from New Orleans.