Concrete-Steel Engineering Co.

of New York, New York
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In 1900 William Mueser formed the Concrete-Steel Engineering Company in partnership with Edwin Thacher.

Thacher, like Mueser, specialized in reinforced concrete engineering and held a number of concrete arch and reinforcing system patents. After 1912 when Thacher retired from the firm and from active practice, Mueser became the sole owner of the Concrete-Steel Engineering Company. One of his most notable bridges is the Galveston Causeway, Texas. Mueser continued to manage the firm until 1933 when he dissolved the company and entered the employment of the Federal Civil Works Administration as a Regional Director.

Broadway Bridge (Oswego County, New York)
Design, 1913
Lost Open-spandrel arch bridge over Oswego River & Oswego Canal on Broadway
Replaced by a new bridge

Clarksburg Street Bridge (Marion County, West Virginia)
Built 1926
Concrete tee beam bridge over Buffalo Creek on Clarksburg Street
Replaced by a new bridge

Clinch Avenue Viaduct (Knox County, Tennessee)
Built 1905
Closed-spandrel arch bridge over Second Creek, Norfolk Southern Railroad Tracks on Clinch Avenue
Open to traffic

Grand Avenue Viaduct (Milwaukee County, Wisconsin)
Designer, 1911
Lost Open-spandrel arch bridge over North 44th Street, Canadian National Railway, Menomonee River, North 39th Street, Miller Brewing Co on Grand Avenue/Wisconsin Avenue
Replaced by a new bridge

Illinois River Bridge (Peoria County, Illinois)
Built 1909
Lost concrete arch bridge over Illinois River in Peoria
Collapsed, and replaced

Lafayette Spring Street Bridge (St. Lawrence County, New York)
Consulting Engineers, 1916
Deck arch bridge over Oswegatchie River on Lafayette Spring Street in Ogdensburg
Open to traffic

Main Street Bridge (1927) (Danville, Virginia)
Built 1927
Lost concrete arch bridge over Dan River on Main Street in Danville
Replaced by new bridge in 2005

Main Street Bridge (Old) (Montgomery County, Ohio)
Built 1903
Lost Closed-spandrel arch bridge over Great Miami on N Main St
Replaced by new bridge

Mayo Bridge (Richmond, Virginia)
Designer, 1913
Concrete arch bridge over James River on 14th Street in Richmond
Open to traffic

Old Galveston Causeway (Galveston County, Texas)
1912 Bridge Engineer, 1912
Modern lift bridge with concrete arch approach spans over Galveston Bay on BNSF Railway (and former highway)
Open to railroad traffic only

Queensbury-Moreau Viaduct (Saratoga County, New York)
Design, 1915
Lost Open-spandrel arch bridge over Hudson River on US 9
Replaced by a new bridge

State Street Bridge (Albany County, New York)
Built 1913
Lost Closed-spandrel arch bridge over Albany Basin on State Street
Filled in

Tuscarawas Avenue Bridge (Tuscarawas County, Ohio)
Built 1907
Lost Closed-spandrel arch bridge over Tuscarawas River on Tuscarawas Avenue in Dover
Replaced by new UCEB

US11 Black River Bridge (Jefferson County, New York)
Consulting Engineer, 1921
Lost Open-spandrel arch bridge over Black River on US 11
Replaced by a new bridge

Van Buren Street Bridge (New Castle County, Delaware)
Design, 1906
Closed-spandrel arch bridge over Brandywine Creek on Van Buren Street
Open to traffic