1887

Waddell establishes his own firm in Kansas City, MO

1894

South Halsted Street Bridge, Chicago, IL - Became the prototypical vertical-lift bridge. 

1899

Waddell & Hendrick formed

1907

Waddell & Harrington formed
Waddell appointed Principal Engineer of the Trans-Alaska Siberian Railway Co.

1913

Arroyo Seco Bridge (Colorado Street Bridge over Arroyo Seco), Pasadena, CA

1917

Waddell & Son Formed

1920

Waddell moves the firm to New York City from Kansas City

1927

Hardesty joins Waddell as Partner; Waddell & Hardesty formed

1928

Goethals Bridge and Outerbridge Crossing, NY – NJ

1931

Anthony Wayne Bridge (Suspension), Ohio – AISC Award Winner

1935

North Grand Island Bridge (Truss), New York – AISC Award Winner

1937

Marine Parkway Bridge (Vertical-Lift) New York – AISC Award Winner
The Marine Parkway-Gil Hodges Memorial Bridge was one of the many public works projects carried out by the great builder, Robert Moses. The bridge features the longest vehicular vertical-lift span at that time at 540’, providing a 500’ navigable channel into Jamaica Bay.

1941

Rainbow Bridge (Arch), NY/Canada – AISC Award Winner – Most Beautiful Bridge - Waddell & Hardesty was chosen by the Commission to be responsible for the planning, design and construction oversight of the bridge

1945

Hanover joins the firm as a partner - HARDESTY & HANOVER FORMED

1952

Southeast Fourth Avenue (Skew Bascule), Florida – AISC Award Winner

1954

Hoover Avenue Bridge (Girder), New York – AISC Award Winner

1962

Lewiston-Queenston Bridge (Arch), NY/Canada – AISC Award Winner

1963

Alexander Hamilton Bridge over the Harlem River - This 555-foot arch carries 8 lanes of traffic along southbound I-95 linking New England, New York and New Jersey and affecting commerce throughout the entire region. 

1968

Rober Moses Causeway over Great South Bay and State Boat Channel Bridges twin), Long Island, NY

1973

Piscataqua River Bridge (Truss), Maine and New Hampshire – AISC Award Winner - This Piscataqua River Bridge carries Interstate I-95 135 feet over the Piscataqua River between Portsmouth, NH and Kittery, ME.  This six-lane continuous arch structure features a main span of 756 feet flanked on each end by 294 foot anchor spans.

1976

Stratford Avenue (Vertical Lift), Connecticut – AISC Award Winner

1982

Elizabeth River Bridge (Bascule), Virginia – AISC Award Winner

1988

New York State Thruway over Schoharie Creek Bridge Replacement, NY
On the morning of April 5, 1987 the swift current of a swollen Schoharie Creek took its toll on the shallow foundations of the original New York State Thruway bridge over Schoharie Creek. That same day, engineers from Hardesty & Hanover arrived to start both investigating the collapse and planning a replacement bridge along this critical route. 

1991

Greenpoint Avenue Bridge (Bascule), New York – AISC Award Winner

1996

Route I-80/Route 19 Interchange, New Jersey – AISC Award Winner – Best  Project of its Kind

2001

Ninth Street Bridge (Vertical Lift), NY – AISC Award Winner

2002

Tomlinson Bridge over Quinnipiac River, New Haven, CT - This bridge carries four lanes of US Route 1 and a dedicated rail track on a single level, resulting in a bridge approximately 90 feet wide.  A 270-foot vertical lift span provides a 240-foot wide by 63-foot high clearance envelope when fully opened. 

2003

Marine Parkway Bridge (Reconstructed – Vertical Lift), NY – AISC Award Winner

2005

New Croton Dam Spillway Bridge (Arch), NY – AISC Award Winner
Third Avenue Bridge (Swing), NY – AISC Award Winner

2008

Woodrow Wilson Bridge over Potomac River, MD – VA
The new Woodrow Wilson Bridge is a signature crossing over the Potomac River just south of Washington, DC. It carries twelve lanes of Interstate I-95/495 traffic (with provision for two of the lanes to be converted to commuter rail).