But an increasing number seem put off by the high level of tolls.
Financing will come from a mix of state grants and tolls.
The charging of tolls came to an end on June 10, 1896.
It operates seven days a week, and is free of tolls.
Federal approval for the use of tolls came in January 2007.
This changed to a system of tolls from 1704, which allowed other boats to use the Beck.
The Act also set out exemptions for the payment of tolls.
By 1321, river rights had been extended to the charging of tolls.
They're blaming a new system of tolls which means drivers only have to pay going one way.
The existing span had been free of tolls since 1965.