North 21st Street Bridge

North 21st Street Bridge
Location Spans Buckley Gulch, N. Fife and Oakes, Tacoma, Washington
Coordinates 47°16′3″N 122°28′11″W / 47.26750°N 122.46972°W / 47.26750; -122.46972Coordinates: 47°16′3″N 122°28′11″W / 47.26750°N 122.46972°W / 47.26750; -122.46972
Area less than one acre
Built 1910
Built by Creelman, Putnam & Healy
Architect Waddell & Harrington
Architectural style Rigid-frame girder bridge, Other
MPS Historic Bridges/Tunnels in Washington State TR
NRHP reference # 82004280[1]
Added to NRHP July 16, 1982

The North 21st Street Bridge in Tacoma, Washington was built in 1910. It was designed by engineers Waddell & Harrington and is a continuous concrete rigid-frame girder bridge. It is significant as one of the very earliest examples of its type. It was built "almost simultaneously" with the 950-foot (290 m) Asylum Avenue Aqueduct in Knoxville, Tennessee, which was documented by Carl W. Condit to be the first continuous concrete girder bridge to be built.[2]:1–2

It has three 60 feet (18 m) reinforced concrete spans with four continuous girders. Its spans are supported by reinforced concrete columns and abutments. The bridge has "massive and over-designed" slabs (9 feet deep) and beams (from 4 to 7 feet wide, from 9 to 11 feet deep. It is 48 feet (15 m) wide to accommodate trolley tracks in the middle.[2]

It was listed on the National Register of Historic Places in 1982.[1]

See also

References

  1. 1 2 National Park Service (2010-07-09). "National Register Information System". National Register of Historic Places. National Park Service.
  2. 1 2 Lisa Soderberg (1979). "HAER/Washington State Bridge Inventory: North 21st Street Bridge". National Park Service. Retrieved 2016-06-10. with two photos


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.