Waddell & Harrington
| Company type | Private |
|---|---|
| Industry | Engineering, Bridge design |
| Founded | 1907 |
| Founder | John Alexander Low Waddell, John Lyle Harrington |
| Defunct | 1915 |
| Headquarters | Kansas City , United States |
Area served | United States, Canada |
| Products | Vertical-lift bridges, fixed bridges |
Waddell & Harrington was a U.S.-based engineering company focused on bridge design, operating from 1907 until 1915. Established in 1907 by John Alexander Low Waddell (1854–1938) alongside John Lyle Harrington (1868–1942), the firm maintained its main office in Kansas City, Missouri and additional branches in Portland, Oregon and Vancouver, British Columbia. The company was responsible for designing more than 30 vertical-lift bridges intended for both highway and railroad applications.
Beyond vertical-lift structures, the firm also engineered distinguished fixed bridges, such as the Colorado Street Bridge located in Pasadena. Multiple works by this company have earned recognition through inclusion on the U.S. National Register of Historic Places (NRHP).
Notable projects
Prominent bridges designed by Waddell & Harrington encompass:
- Hawthorne Bridge, which crosses the Willamette River in Portland, Oregon, listed on the NRHP
- Interstate Bridge, spanning the Columbia River between Portland, Oregon, and Vancouver, Washington, known on the NRHP as the Portland–Vancouver Highway Bridge
- Steel Bridge, situated over the Willamette River in Portland
- Iowa Central Railway Bridge over the Mississippi River at Keithsburg, Illinois (constructed in 1909, now demolished)
- Caddo Lake Bridge, LA 538 crossing Caddo Lake near Mooringsport, Louisiana, NRHP-listed
- City Waterway Bridge, extending across Ravenna Park Ravine in Tacoma, Washington, listed on the NRHP
- Colorado Street Bridge, Pasadena, California, included in the NRHP
- North 21st Street Bridge and North 23rd Street Bridge, both spanning Buckley Gulch in Tacoma, Washington, recognized by the NRHP
- Union Street Railroad Bridge and Trestle, located in Salem, Oregon, listed on the NRHP
- ASB Bridge over the Missouri River at Kansas City