Speed limits in the United States by jurisdiction

Kentucky generally has a 70 mph speed limit on rural freeways as of 2007. The speed limit is reduced to 55 on multi-lane highways in some urban areas (I-71/75 south of Cincinnati, I-64, I-65, I-71 and I-264 in Louisville, U.S. 60 bypass in Owensboro), and KY 4 in Lexington. There are two 50 mph areas in Louisville. One approaching the Sherman Minton Bridge crossing the Ohio River into Indiana on I-64, and one approaching the Kennedy Bridge on I-65 towards Indiana. The Transportation Cabinet is now authorized to raise any multilane, divided rural highway up to 65 MPH based on speed and design studies. Anyone may request an increase by contacting their local Transportation Cabinet office and specifying the roadway to be raised. Two-lane, undivided highways are limited to 55 MPH. Points are not assessed for speeds less than 10 mph over the speed limit only on limited access highways, or for tickets received by Kentucky licensed drivers out of state.

Is this statement correct "is there a speed limit on the ohio river"?
yes