Photo entitled: "Raising Bridgeport Drawbridge," circa 1902.

The crossing point over the South Fork (or "Bubbly Creek") of the Chicago and Alton; the Atchison, Topeka and Santa Fé and Chicago, Madison and Northern railroads. Actually, contrary to the original caption, this is a swing bridge. Note the mucky condition of the water in the river. It was much worse farther south -- in particular the stock yard slip (or, more officially: the East Fork of the South Fork of the South Branch of the Chicago river). That slip was eventually filled in, as it was considered unredeemable. The bridge here was soon replaced with a drawbridge.

Source: Chicago Department of Public Works Annual Report 1902, p. 272f. See bibliography for publication information.