Purdy Bridge

{{Use American English|date=January 2025}}

{{Use mdy dates|date=August 2023}}

{{Infobox NRHP

| name = Purdy Bridge

| nrhp_type =

| image = Purdy Bridge.jpg

| caption =

| location = Purdy, Washington

| coordinates = {{Coord|47|23|02|N|122|37|41|W|display=inline,title}}

| locmapin = Washington

| area =

| built = 1936

| architect = W. H. Craft

| architecture =

| added = July 16, 1982

| mpsub = Historic Bridges/Tunnels in Washington State TR

| refnum = 82004274{{NRISref|2007a}}

}}

The Purdy Bridge is a continuous reinforced concrete box girder bridge that spans {{Convert|550|ft}}, with a central span of {{convert|190|ft}}, between Henderson Bay and Burley Lagoon. The bridge connects Purdy, Washington with the Purdy Sand Spit Park and Wauna, Washington.

Purdy Bridge was completed on September 29, 1937,{{Cite web |url=http://www.historylink.org/index.cfm?DisplayPage=output.cfm&File_Id=7133 |title=Purdy (Spit) Bridge is completed in Pierce County on September 29, 1937}} at a cost of $62,000, from a design by Homer M. Hadley. It was the first bridge in the United States to utilize a reinforced-concrete box girder design and it was the longest continuous box girder bridge in the United States at the time.{{harvnb|Holstine|Hobbs|2005|pp=219–220}}{{harvnb|Slater|2007|p=102}}

The bridge was added to the National Register of Historic Places in 1982.