North 21st Street Bridge
About this property
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. 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 (2.7 m) deep) and beams from 4 to 7 feet (1.2 to 2.1 m) wide, from 9 to 11 feet (2.7 to 3.4 m) deep. It is 48 feet (15 m) wide to accommodate trolley tracks in the middle. The bridge was listed on the National Register of Historic Places in 1982.
Location
Categories
Property data from the National Register of Historic Places, National Park Service (public domain).
Description adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License.
Everything a full report reveals about North 21st Street Bridge
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Questions about this property
When was North 21st Street Bridge listed on the National Register?
North 21st Street Bridge was listed on the National Register of Historic Places on July 15, 1982.
What type of historic resource is North 21st Street Bridge?
North 21st Street Bridge is classified as a structure in the National Register of Historic Places.
What is the period of significance for North 21st Street Bridge?
The period of significance for North 21st Street Bridge is recorded as the industrial era.
Can I research the history near North 21st Street Bridge?
Yes. Aubrey Research reports search National Register listings, battlefield records, land patents, and other primary historical sources within any radius of a US address. A report for an address near North 21st Street Bridge will include this listing and all other historical records in the area.
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