Willard Bridge (Shawnee County, Kansas)
Built 1955; rehabilitated 1983
Deck truss bridge over Kansas River on Carlson Road at Willard
Open to traffic

Willey Road Bridge (Hamilton County, Ohio)
Built 1931; rehabilitated 1996
Rainbow arch bridge on Willey Road in Crosby Township
Open to two-lane traffic

William H. Natcher Bridge (Daviess County, Kentucky)
Opened October 21, 2002
Cable-stayed bridge over the Ohio River on US 231 northeast of Owensboro
Open to four-lane traffic

Williams Bend Bridge (Hickory County, Missouri)
Through truss bridge over Pomme de Terre River on CR 281 north of Hermitage, between Route Y and Route U
Open to traffic(?)

Williams Covered Bridge (Lawrence County, Indiana)
Built 1884 by J.J. Daniels
Two-span covered bridge over East Fork White River on Huron & Williams Road
Open to one-lane traffic

Willow Springs Viaduct (Howell County, Missouri)
Built 1939
Plate girder bridge over the BNSF Railroad yard on MO 137 in Willow Springs
Open to two-lane traffic

Wilsons Bridge (Carroll County, Indiana)
Built 1898 by the Lafayette Bridge Co.
Through truss bridge over Deer Creek on CR 300 North
Open to traffic, but in poor condition

Windom Railroad Bridge (Cottonwood County, Minnesota)
Built 1900, replacing an earlier bridge
Two-span through truss bridge over West Fork Des Moines River on the Union Pacific Railroad at Windom
Open to railroad traffic

Windsor Mills Covered Bridge (Ashtabula County, Ohio)
Built 1867; reconstructed 2004
Covered bridge over Phelps Creek on Warner Hollow Road
Open to traffic

Winfield Ferry (Lincoln County, Missouri)
Ferry across the Mississippi River just below Lock and Dam No. 25 at Winfield
Open to toll traffic

Winnebago River Bridge (Floyd County, Iowa)
Built 1925; rehabilitated 1957
Through truss bridge over Winnebago River on 200th Street (CR B43) northwest of Rockford
Open to traffic

Wittenberg Railroad Bridge (Perry County, Missouri)
This railroad line was completed in 1904, although I don't know if this particular bridge is that old or not
Through truss bridge over Brazeau Creek at Wittenberg on the Burlington Northern Santa Fe railroad
Still in use

Wolcott Bridge (Eagle County, Colorado)
Built ca. 1910 by the Pueblo Bridge Co.
Two-span arch bridge over Eagle River on CO 131 at Wolcott
Open to two-lane traffic

Wolf Creek Tributary Bridge (Russell County, Kansas)
Stone arch bridge over Wolf Creek Tributary on Fairview Road
Open to traffic

Wolf River Bridge (Outagamie County, Wisconsin)
Built 1949
Three-span continuous pony truss bridge over Wolf River on CTH S
Open to traffic

Wolf River Bridge (Langlade County, Wisconsin)
Built 1936; rehabilitated 1967
Through truss bridge over Wolf River on WI 52
Open to traffic

Woodford Road Viaduct (Washington County, Wisconsin)
Built 1910
Bridge over Union Pacific Rr on Lrd Woodford Drive
Open to traffic

Woodland Bridge (Iroquois County, Illinois)
Built 1911
Through truss bridge over Sugar Creek on 2100E Road near Woodland, .5 mi. north of Woodland
Open to traffic

Woodrow Wilson Bridge (Hinds County, Mississippi)
Built 1925; closed to traffic Jan. 2000; reconstructed bridge opened Dec. 15, 2003
Reconstructed open-spandrel arch bridge over Pearl River on Silas Brown Street in Jackson
Open to traffic

Wyaloosing Creek IN 3 Bridge (Jennings County, Indiana)
Built 1935; rehabilitated 1984
Concrete arch bridge over Wyaloosing Creek on IN 3
Open to traffic

Yashau Creek Bridge (McCurtain County, Oklahoma)
Built 1936
Pony truss bridge over Yashau Creek on US 70
Open to traffic

Yates Avenue Bridge (Marshall County, Iowa)
Built ca. 1900
Pony truss bridge over the Union Pacific Railroad (formerly Chicago & Northwestern Railroad) on Yates Avenue
Open to traffic

Yazoo River US 82 Bridge (Leflore County, Mississippi)
Built 1954
Through truss bridge over Yazoo River on US 82 in Greenwood
Open to traffic

Yellowstone River Bridge (Stillwater County, Montana)
Built 1931
Through truss bridge over Yellowstone River on Frontage Road 115
Open to traffic

York Blvd. Bridge (Los Angeles County, California)
Built 1912
Concrete arch bridge over I-110 on York Blvd. in Los Angeles
Open to traffic

Youngs Creek Bridge (Orange County, Indiana)
Built 1935
Pony truss bridge over Youngs Creek on CR 350 West
Open to traffic

Youngstown-Poland Road Bridge (Lawrence County, Pennsylvania)
Built 1936 by the Fort Pitt Bridge Works
Through truss bridge over Mahoning River on US 224/PA 551 (Youngstown-Poland Road)
Open to traffic

Yount Bridge (Perry County, Missouri)
Built 1950
Three-span concrete bridge over Whitewater River on Route J at Yount
Open to traffic

Zachery Road Bridge (Linn County, Kansas)
Built 1915
Concrete arch bridge over Walnut Creek on Zachery Road, 4.0 mi. east and 3.4 mi. north of Prescott
Open to traffic

Zack Wheat Drive Bridge (Caldwell County, Missouri)
Pony truss bridge over Long Creek on S.W. Zack Wheat Drive
Open to traffic

Zacke Cox Covered Bridge (Parke County, Indiana)
Built 1908 by J.A. Britton; rehabilitated 1991 and 2002
Covered bridge over Rock Run Creek on CR 500 South
Open to one-lane traffic

Zalma Bridge (Bollinger County, Missouri)
Built 1929-30, replacing a 1900 span that was then moved to Gipsy
Through truss bridge over Castor River on MO 51 at Zalma
Open to one-lane traffic on a paved road

Zanesville Y Bridge (Muskingum County, Ohio)
First bridge built 1814; rebuilt 1819, 1832, 1902, and 1984
Three-legged bridge over the Muskingum and Licking Rivers on US 40/US 22 at Zanesville
Open to traffic

Zinni Bridge (Carroll County, Indiana)
Built 1945
Through truss bridge over Wildcat Creek on Prince William Road
Currently undergoing repairs through mid-April 2006

Zion Bridge (Madison County, Missouri)
Built 1922
Pony truss bridge over Twelvemile Creek at Zion on CR 417 (Old US 67)
Open to traffic