US 421

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Brown Ditch US 421 Bridge (White County, Indiana)
Built 1929; rehabilitated 1960
Concrete arch bridge over Brown Ditch on US 421
Open to traffic

Cane Creek bridge (Lee County, Virginia)
Built 1932
Concrete deck girder bridge over Cane Creek on Highway 421
Open to traffic

Cape Fear Memorial Bridge (New Hanover County, North Carolina)
Built 1969
Vertical lift bridge over Cape Fear River on US 76/421 in Wilmington
Open to traffic

Clay's Ferry Bridge (Fayette County, Kentucky)
Built 1998 by the C.J. Mahan Construction Co. to replace a pair of deck truss bridges from 1946 and 1963
Deck truss bridge over the Kentucky River on I-75/US 25/US 421 at Clay's Ferry south of Lexington
Open to six lanes of traffic

Clay's Ferry Bridge (1946) (Fayette County, Kentucky)
Built 1946 by the Mount Vernon Bridge Co. as part of US 25; twin span added 1963 as part of I-75; both spans demolished and replaced 1998
Lost Warren deck truss bridge over Kentucky River on I-75/US 25/US 421 at Clay's Ferry south of Lexington
Replaced by a new bridge

Clay's Ferry Bridge (1963) (Fayette County, Kentucky)
Built 1963 for I-75 as twin span to original US 25 bridge built in 1946; both spans demolished and replaced 1998
Lost Warren deck truss bridge over Kentucky River on I-75/US 25/US 421
Replaced by a new bridge

Clifty Creek Old US 421 Bridge (Decatur County, Indiana)
Built 1935; replaced 2014
Lost concrete arch bridge over Clifty Creek on Old US 421
Replaced by a new bridge

Cove Creek Bridge (Scott County, Virginia)
Built 1930; Replaced 2007
Lost pony truss bridge over Cove Creek on US 58 / US 421
Replaced by new bridge

Cripe Run US 421 Bridge (Clinton County, Indiana)
Built 1931
Concrete arch bridge over Cripe Run on US 421
Open to traffic

Finley Creek US 421 Bridge (Boone County, Indiana)
Built 1931; rehabilitated 1986
Concrete arch bridge over Finley Creek on US 421
Open to traffic

Hoagland Ditch US 421 Bridge (White County, Indiana)
Built 1929; rehabilitated 1960
Concrete arch bridge over Hoagland Ditch on US 421
Open to traffic

Kilmore Creek US 421 Bridge (Clinton County, Indiana)
Built 1940; rehabilitated 1985
Pony truss bridge over Kilmore Creek on US 421
Open to two-lane traffic

Little Graham Creek US 421 Bridge (Ripley County, Indiana)
Built 1931; rehabilitated 1968
Concrete arch bridge over Little Graham Creek on US 421
Open to traffic

Madison-Milton Bridge (Jefferson County, Indiana)
Built 1928-29; rehabilitated 1997, imploded August 2013
Cantilevered through truss bridge over Ohio River on US 421 between Madison, IN, and Milton, KY
All main spans demolished.

New Madison-Milton Bridge (Trimble County, Kentucky)
Opened to traffic on April 17, 2014 after being slid onto its permanent piers a week prior.
Warren through truss bridge - modern
Open to traffic

Old US421 Branch of Hays Fork Bridge (Madison County, Kentucky)
Built 1938
Steel stringer bridge over Branch of Hays Fork on Old US 421
Closed to all traffic

Snow's Cut Bridge (New Hanover County, North Carolina)
Built 1963 to replace previous swing bridge
Deck plate girder bridge over Snow's Cut (Intracoastal Waterway) on North Lake Park Boulevard (U.S. 421)
Open to traffic

South Fork Wildcat Creek US 421 Bridge (Clinton County, Indiana)
Built 1940; rehabilitated 1985
Pony truss bridge over South Fork Wildcat Creek on US 421
Open to traffic

US421 Cape Fear River Bridge (Old) (New Hanover County, North Carolina)
Lost Deck plate girder bascule bridge over Cape Fear River on US Highway 421
Superstructure replaced

US421 Cape Fear River Bridge (Older) (New Hanover County, North Carolina)
Warren through truss with all verticals bridge over Cape Fear River on US 421
Replaced by a new bridge

US421 Wabash River Bridge (Carroll County, Indiana)
Built 1934-35, replaced in 1996
Lost concrete arch bridge over Wabash River on US 421
Replaced by new bridge

US421 Yadkin River Bridge (Forsyth County, North Carolina)
Replaced 1953
Lost Pratt through truss bridge over Yadkin River on US 421
Replaced by a new bridge

Vernon Fork-US 421 Bridge (Decatur County, Indiana)
Built 1929; rehabilitated 1961
Concrete arch bridge over Vernon Fork Muscatatuck River on US 421
Open to traffic