Report on Bridging the Mississippi River Between Saint Paul, Minn., and St. Louis, Mo

50 feet abutment Act approved amendment approved July authorized barge bill Board of Engineers boats Bridge Company built Chief of Engineers Civil Engineer clear Clinton committee Congress construction Creek Crosse deposits Diagram distance draw draw-opening draw-span Dubuque feet above low feet above low-water feet long feet wide Fort Snelling G. K. WARREN headway height high bridges high water high-water width Illinois inch Iowa junction Keokuk Lake Pepin left bank limestone loess low to high low water lower main channel masonry miles Minn Minnesota River Mississippi River Missouri River mouth navigation number of days obstruction Ohio River opening pass passage PHOTO-LITHO piers piles ponton Prairie du Chien Quincy rafts Railroad Company railway draw-bridge rest-pier right bank riprap rise from low Saint Anthony Saint Paul sand Senate sheet shore side slope slough spans steamboats steamer stream tion trestling truss upper valley velocity