North 21st Street Bridge
United States historic place
North 21st Street Bridge | |
 | |
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 |
| MPS | Historic Bridges/Tunnels in Washington State TR |
| NRHP reference No. | 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 (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.[2]
The bridge was listed on the National Register of Historic Places in 1982.[1]
See also
- List of bridges documented by the Historic American Engineering Record in Washington (state)
- List of bridges on the National Register of Historic Places in Washington (state)
- North 23rd Street Bridge, similar, nearby, narrower, longer, also designed by Waddell & Harrington, and also NRHP-listed
References
- ^ a b "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
- ^ a b Soderberg, Lisa (1979). "HAER/Washington State Bridge Inventory: North 21st Street Bridge". National Park Service. Retrieved June 10, 2016. with two photos
External links
Media related to North 21st Street Bridge at Wikimedia Commons- Historic American Engineering Record (HAER) No. WA-83, "North 21st Street Bridge, North 21st Street spanning Buckley Gulch, Tacoma, Pierce County, WA", 20 photos, 10 data pages, 2 photo caption pages
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