To the Senate and House of Representatives of the United States:
The States of Pennsylvania, Maryland, and Virginia having by their several acts consented that the road from Cumberland to the State of Ohio, authorized by the act of Congress of the 29th of March, 1806, should pass through those States, and the report of the commissioners, communicated to Congress with my message of the 31st January, 1807, having been duly considered, I have approved of the route therein proposed for the said road as far as Brownsville, with a single deviation, since located, which carries it through Uniontown.
From thence the course to the Ohio and the point within the legal limits at which it shall strike that river is still to be decided. In forming this decision I shall pay material regard to the interests and wishes of the populous parts of the State of Ohio and to a future and convenient connection with the road which is to lead from the Indian boundary near Cincinnati by Vincennes to the Mississippi at St. Louis, under authority of the act of the 21st April, 1806. In this way we may accomplish a continued and advantageous line of communication from the seat of the General Government to St. Louis, passing through several very interesting points of the Western country.
I have thought it advisable also to secure from obliteration the trace of the road so far as it has been approved, which has been executed at such considerable expense, by opening one-half of its breadth through its whole length.
The report of the commissioners, herewith transmitted, will give particular information of their proceedings under the act of the 29th March, 1806, since the date of my message of the 31st January, 1807, and will enable Congress to adopt such further measures relative thereto as they may deem proper under existing circumstances.
Thomas Jefferson, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202834