Important Moments in H&H History
| 1887 | J.A.L. Waddell, Consulting Engineer is formed in Kansas City, MO |
| 1894 | South Halsted Street Bridge, Chicago, IL – Became the prototypical vertical lift bridge |
| 1899 | Waddell & Hedrick formed |
| 1904 | 1904 Fraser River Swing Bridge, British Columbia – still in operation |
| 1907 | Waddell & Harrington formed; Waddell appointed Principal Engineer of the Trans-Alaska Siberian Railway Co. |
| 1910 | Hawthorne Bridge across the Williamette River, Portland, OR; oldest vertical lift bridge still in operation in the United States |
| 1911 | Armour-Swift-Burlington Railroad Bridge, Kansas City, MO – still in operation |
| 1912 | Steel Bridge across the Williamette River, Portland, OR – still in operation |
| 1913 | Arroyo Seco Bridge (Colorado Street Bridge over Arroyo Seco), Pasadena, CA – still in operation |
| 1913 | City Waterway Bridge (aka Murray Morgan Bridge), Tacoma, WA – still in operation |
| 1914 | Harrington leaves the firm; goes on to form Harrington & Cortelyou |
| 1914 | Calumet River Bridge, IL – still in operation |
| 1915 | Waddell & Son formed |
| 1917 | Columbia River Interstate Bridge (I-5 Bridge) – still in operation |
| 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), OH |
| 1935 | North Grand Island Bridge (Truss), NY |
| 1937 | Marine Parkway Bridge (Vertical Lift) NY The Marine Parkway-Gil Hodges Memorial Bridge was one of the many public works projects carried out by the great builder, Robert Moses. |
| 1941 | Rainbow Bridge (Arch), NY/Canada – AISC Award Winner – Most Beautiful Bridge |
| 1945 | Hanover joins the firm as a partner – HARDESTY & HANOVER formed |
| 1952 | Southeast Fourth Avenue (Skew Bascule), FL |
| 1954 | Hoover Avenue Bridge (Girder), NY |
| 1962 | Lewiston-Queenston Bridge (Arch), NY/Canada |
| 1963 | Alexander Hamilton Bridge over the Harlem River |
| 1968 | Robert Moses Causeway over Great South Bay and State Boat Channel Bridges twin), Long Island, NY |
| 1973 | Piscataqua River Bridge (Truss), ME and NH- still in operation |
| 1976 | Stratford Avenue (Vertical Lift), CT |
| 1982 | Elizabeth River Bridge (Bascule), VA |
| 1987 | Firm celebrates 100th Anniversary |
| 1988 | New York State Thruway over Schoharie Creek Bridge Replacement, NY On the morning of April 5, 1987, a swollen Schoharie Creek’s swift current 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 investigate the collapse and plan a replacement bridge along this critical route. |
| 1991 | Greenpoint Avenue Bridge (Bascule), NY |
| 1996 | Route I-80/Route 19 Interchange, NJ – AISC Award Winner – Best Project of its Kind |
| 2002 | Tomlinson Bridge over Quinnipiac River, New Haven, CT |
| 2003 | Marine Parkway Bridge (Reconstructed – Vertical Lift), NY |
| 2005 | New Croton Dam Spillway Bridge (Arch), NY |
| 2008 | New Woodrow Wilson Bridge over Potomac River, MD – VA |
| 2010 | Ben Sawyer Swing Bridge, Mount Pleasant/Sullivan’s Island, SC |
| 2012 | Firm celebrates 125 Anniversary with the publishing of a 163-page history book |
| 2013 | Murray Morgan Bridge dedicated in Tacoma, WA |
| 2013 | Jacques Chaban-Delmas Bridge, Bordeaux, France-Grand National Prize of France for Engineering |
| 2014 | Principal Emeritus, Andrew Herrmann, PE, named winner of ENR New York’s Inaugural Legacy Award |
| 2014 | The firm receives the NY Construction Legacy Award from New York Building Congress |
| 2015 | Innovation, Science & Technology Building at Florida Polytechnic University Named ENR Global Project of the Year |
| 2016 | Acquisition of The Heimburg Group |
| 2018 | Sarah Mildred Long Bridge opens, Portsmouth, NH – Kittery, ME |
| 2019 | Acquisition of New York traffic & planning firm Frederick P. Clark |
| 2019 | The Shed opens, New York, NY |
| 2019 | Sarah Mildred Long Bridge Replacement Project wins National ACEC Grand Award and named ENR Best Project of 2020 |
| 2020 | Charlie Gozdziewski elected Chair of ACEC National |
| 2021 | Acquisition of Corven Engineering |
| 2022 | Acquisition of P.E. Structural Consultants |
| 2022 | Firm Announces Name Change to H&H and New Logo |
