George S. Morison

of New Bedford, Massachusetts
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One of the most noteworthy engineers in American history, George Shattuck Morison designed some of the earliest and largest metal truss bridges in the United States.

Armitage Bridge (Lane County, Oregon)
Likely Designer Based On Portal Style, 1887
Whipple through truss bridge over McKenzie River on Pedestrian Path in Coburg
Open to pedestrians

Bellefontaine Bridge (St. Louis County, Missouri)
Consulting engineer, 1893
Baltimore through truss bridge over the Missouri River on the BNSF Railway
Open to one track of railroad traffic

BN - Alton Bridge (Madison County, Illinois)
Built 1894
Lost through truss swing bridge over the Mississippi River on the Burlington Northern Railroad at Alton
Removed after the railroad line was abandoned

BN - Sioux City High Bridge (Woodbury County, Iowa)
Built 1888
Lost Whipple through truss bridge over Missouri River on Burlington Northern Railroad
Replaced by a new bridge

BNSF - Burlington Bridge (Des Moines County, Iowa)
Built 1893
Through truss bridge over Mississippi River on BNSF Railway in Burlington
Replaced by a new bridge 2011-2012

Bridge Camp Bridge (King County, Washington)
Built 1902
Pratt pony truss bridge over White River on Pedestrian Walkway
Open to traffic

Butler Bridge (Berkshire County, Massachusetts)
Engineer, 1882
Pratt truss bridge over Housatonic River on Butler Road
Open to pedestrians

CB&Q - Rulo Bridge (Richardson County, Nebraska)
Chief engineer, 1887
Lost Whipple through truss bridge over Missouri River
Superstructure replaced

CB&Q - Winona Bridge (Winona County, Minnesota)
Built 1891
Lost through truss bridge over Mississippi River on Chicago, Burlington and Quincy Railroad (later BN RR)
Removed

CTT - West Fork South Branch Chicago River Bridge (Cook County, Illinois)
Built 1898
Lost deck plate girder bridge over West Fork South Branch Chicago River (No longer exists) on Chicago Terminal Transfer Railroad
No longer exists

EIRR - Snake River Bridge (Cassia County, Idaho)
Probable Designer Based On Style
Whipple through truss bridge over Snake River on Eastern Idaho Railroad (EIRR)
Open to traffic

ERIE - Genessee River Bridge (Wyoming County, New York)
Built 1875
Lost Pratt deck truss bridge over Gennessee River
Replaced by a new bridge

First Bismarck Railroad Bridge (Burleigh County, North Dakota)
Chief engineer, 1882
Lost through and deck truss bridge over the Missouri River carrying the Northern Pacific Railway in Bismarck
Orginal Whipple truss spans replaced with through Warren truss spans, reusing the original piers

First Cairo Railroad Bridge (Alexander County, Illinois)
Built 1889
Lost through and deck truss bridge over the Ohio River carrying the Illinois Central Railroad in Cairo
Replaced by the current bridge, reusing many of the piers in the process

First Hannibal Bridge (Jackson County, Missouri)
Assistant Engineer, 1869
Lost through truss bridge over Missouri River on Railroad in Kansas City
No longer exists

Frisco Bridge (Shelby County, Tennessee)
Chief Engineer, 1892
Cantilevered through truss railroad bridge over the Mississippi River at Memphis
Open to railroad traffic

Kate Shelley High Bridge (Boone County, Iowa)
Consulting Engineer, 1901
Deck truss bridge over Des Moines River on Union Pacific Railroad west of Boone
Bypassed

Leavenworth Terminal Bridge (Leavenworth County, Kansas)
Built 1893
Lost through truss swing bridge over the Missouri River on Chicago & North Western Railway at Leavenworth
Removed

Marent Trestle (Missoula County, Montana)
Design of 1885 Structure, 1885
Bridge over Marent Gulch on MRL (former Northern Pacific) Railway
Open to traffic

Maroon Creek Bridge (Pitkin County, Colorado)
Built 1888
Trestle over Maroon Creek on CO 82 at Aspen
Bypassed by a replacement bridge and left in place for pedstrian use.

Merchants Bridge (St. Louis, Missouri)
Consulting engineer, 1890
Three-span through truss railroad bridge over the Mississippi River between St. Louis and Venice, Illinois on Terminal Railroad Assosiation
Open to two tracks of railroad traffic. Only one train is allowed to cross the bridge at a time, due to its age.

Nebraska City Railroad Bridge (Otoe County, Nebraska)
Chief engineer, 1888
Lost Whipple through truss bridge over Missouri River
Removed

O Street Viaduct (Douglas County, Nebraska)
Lost Whipple through truss bridge over South Omaha Stockyards on "O" Street
Removed

Old Plattsmouth Railroad Bridge (Cass County, Nebraska)
Chief engineer, 1880
Lost Whipple through truss bridge over Missouri River
Replaced by new bridge

Steel Bridge (Old) (Multnomah County, Oregon)
Design, 1888
Lost Truss bridge over Willamette river on Oregon Railway and Navigation Co. & Road
Replaced by a new bridge

Taft Bridge (Washington, District of Columbia)
engineer, 1907
Concrete arch bridge over Rock Creek on Connecticut Avenue
Open to traffic

UP - Blair Bridge (Old) (Washington County, Nebraska)
Chief engineer, 1883
Lost Whipple through truss bridge over Missouri River on Union Pacific Railroad
Superstructure replaced

UP - Omaha Railroad Bridge (2nd) (Douglas County, Nebraska)
Built 1887
Lost Whipple through truss bridge over Missouri River on Union Pacific Railroad
Replaced by new bridge

UP - Riparia Bridge (Whitman County, Washington)
Built 1889
Lost Pratt through truss swing bridge over Snake River on Union Pacific Railroad
Removed

Wyoming Heritage Trail - Wind River Bridge (Fremont County, Wyoming)
Chief engineer, 1883
Whipple through truss bridge over Wind River on Wyoming Heritage Trail (former railroad)
Open to pedestrians