Statistics for occurrence #1 of “Jackson” in page 612 of Benson J. Lossing, Pictorial Field Book of the Civil War. Volume 2.:
...ructing floating bridges.
Grant's only pontoon train was with Sherman, who, under his chief's orders, and while the events we have just been considering were occurring, had been making his way from Jackson to Bridgeport, on the Big Black, a few miles above the railway bridge.
He arrived there
...