It depends how wide, or deep is the river.
The Ohio River was there long before the US. If you mean when did the US take control of the area then it was in 1783 after the Revolutionary War.
slowly! but in all seriousness... down the Ohio river, which will take you to the Mississippi river, through the gulf of Mexico, and on to Florida.
There were no roads yet in Ohio, and mostly muddy tracts in SW Pennsylvania. The Ohio River was the fastest way to go west. You could take flatboats from the origin of the Ohio River at PA, and go all the way to the Mississippi River.
The length of time it takes for you to cross the bridge over the Ohio River from Kentucky to Ohio. About 1-2 minutes.
Cincinnati OH is already in Ohio.
It doesnt take very long about 20- 30 minutes
Virgina lieutenant governor and his men was sent to build a fort at the head of the Ohio river
It takes less than 1 hour to get from Bradford PA to Pittsburgh by rowboat down the Allegheny river.
Too long!
how long does it take you to have sex
About 50 minutes.
About five hours.