Ash, Howard, Needles, & Tammen

of Kansas City, Missouri
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This consulting engineering firm had operations in New York City and Kansas City

Brownville Bridge (Nemaha County, Nebraska)
Engineer, 1938
Through truss bridge over the Missouri River on US 136 in Brownville
Open to traffic

Centennial Bridge (Scott County, Iowa)
Designer, 1940
Steel through arch bridge over the Mississippi River on US 67 between Davenport and Rock Island
Open to traffic

Gordon Avenue Viaduct (Woodbury County, Iowa)
Built 1936
Steel stringer bridge over Over UPRR, Streets on IA 12/US Business 20 in Sioux City
Open to traffic

Greenville-Lake Village Bridge (Chicot County, Arkansas)
Engineer, 1940
Cantilevered Warren through truss bridge over the Mississippi River on US 82 between Greenville and Lake Village
No Longer Exists Western Portal pillars and markers still in place.

Raccoon Creek Bridge (Gloucester County, New Jersey)
Consulting Engineer Firm, 1940
Vertical lift bridge over Raccoon Creek on US 130
Open to traffic

Rainbow Bridge (Jefferson County, Texas)
Built 1938
Through truss bridge over Neches River on Westbound TX 73 in Port Arthur
Open to traffic

Sni-A-Bar Road Bridge (Jackson County, Missouri)
Consulting engineers, 1929
Open-spandrel concrete arch bridge over the Kansas City Southern Railway on Sni-a-bar Road in Kansas City
Replaced by a new bridge

South Omaha Bridge (Douglas County, Nebraska)
Design, 1936
Lost through truss bridge over Missouri River on US 275/NE 92/IA 92 in Omaha
Demolished and replaced

Stillwater Bridge (Washington County, Minnesota)
Consulting Engineers, 1931
Vertical lift bridge over St. Croix River on MN 36/WI 64 at Stillwater
Open to traffic