--The Louisville Courier, of to day, confirms the destruction of two spans of the railroad bridge over Green river, by a misapprehension of the orders to the officer in charge. Any forward movement of our forces, which may have been contemplated, has thus been delayed by this great blunder.

Lincoln forces are at Smithland, and the report is that four hundred Lincolnites have destroyed water-craft of every kind on the Cumberland river, as far up as Ross' Ferry, a distance of 27 miles.

Returned parties from Western Virginia, and who came direct, report that Rosencranz has gone to Kentucky.

The Louisville Journal, of the 9th instant, reports the capture of New Orleans, without firing a gun!