| 词条 | Market Street Bridge (Chattanooga) |
| 释义 |
|bridge_name = Market Street Bridge |image = Market Street Bridge 02.jpg |image_upright = 1.2 |caption = |official_name = Chief John Ross Bridge |also_known_as = |carries = 4 lanes of North Market St. |crosses = Tennessee River |locale = Chattanooga, Tennessee |maint = |id = |design = Double-leaf bascule bridge |mainspan = 358.8 ft (109 m){{Citation needed|date=August 2013}} |length = 1894.5 ft (577 m) |width = 36 ft (11 m) |clearance = |below = |traffic = |open = 1917{{Infobox NRHP | embed = yes | name = Market Street Bridge | nrhp_type = | locmapin = | map_alt = | map_caption = | coordinates = {{coord|35|3|31|N|85|18|33|W|display=inline,title}} | location = | built = | architect = | architecture = | added = December 20, 2010[1] | designated_nrhp_type = | visitation_num = | visitation_year = | refnum = 10001047[1] | mpsub = | governing_body = }} |closed= |toll= }} The Market Street Bridge, officially referred to as the John Ross Bridge, is a bascule bridge that spans the Tennessee River between downtown Chattanooga, Tennessee, and the Northshore District. It carries North Market Street (formerly designated as U.S. Route 127), and was named in honor of Cherokee Chief John Ross. The bridge was completed in 1917 at a cost of $1 million. In the mid-1970s, the southern terminus of US 127 was moved several miles north to the intersection of Dayton Boulevard and Signal Mountain Boulevard in the nearby suburb of Red Bank. The bridge has concrete arch spans flanking a center draw span, which is a steel truss with double-leaf Scherzer rolling lift bascule mechanism. At the time of its completion in 1917, the {{convert|300|ft|m|adj=on}} main span was the longest rolling-lift bascule span in the world.[1] Vehicular traffic originally included streetcars, but streetcar service across the bridge ended in the 1930s.[1] The bridge was formally renamed the Chief John Ross Bridge in 1950.[1] The bridge closed in 2005 for a renovation, but reopened on August 4, 2007, ahead of its originally scheduled September completion date.[2] The bridge was listed on the National Register of Historic Places on December 20, 2010.[3] Four times per year, the bridge is closed for a brief inspection to test its hinge mechanism, as mandated by the US Coast Guard.[4] See also
References1. ^1 2 {{cite book|last=Engstrom|first=Ian C.|title=Historic Bridges: Evaluation, Preservation, and Management|year=2008|publisher=CRC Press|location=Boca Raton, Florida|isbn=978-1-4200-7995-1|page=265|url=https://books.google.com/books?id=vbIz7h2OXR8C&lpg=PA265&dq=%22Market%20Street%20Bridge%22%20Chattanooga&pg=PA265#v=onepage&q=%22Market%20Street%20Bridge%22%20Chattanooga&f=false|editor=Adeli, Hojjat|chapter=Chapter 14: The Historic Rehabilitation of the Market Street Bridge in Chattanooga, TN|accessdate=August 27, 2013}} 2. ^{{cite web|title=Market Street Bridge Project: What's Happening |publisher=Mountain States Contractors |url=http://www.marketstbridge.com/happening.html |accessdate=2013-09-08 |deadurl=yes |archiveurl=https://web.archive.org/web/20130722190038/http://www.marketstbridge.com/happening.html |archivedate=2013-07-22 |df= }} 3. ^1 2 {{cite web |url=http://www.nps.gov/history/nr/listings/20101230.htm |title=National Register of Historic Places: Weekly list of actions taken on properties: 12/20/10 through 12/23/10 |date=December 30, 2010|publisher=National Park Service |accessdate=August 27, 2013}} 4. ^http://www.nooga.com/165186/photos-testing-the-market-street-bridge/ External links{{Commons category|Market Street Bridge (Chattanooga)}}
|structure = Bridges |place = Tennessee River |bridge = Market Street Bridge |bridge signs = |upstream = Walnut Street Bridge |upstream signs = |downstream = P.R. Olgiati Bridge |downstream signs = / TN 29 }}{{NRHP}} 11 : Bascule bridges in the United States|Bridges completed in 1917|Bridges over the Tennessee River|Bridges in Chattanooga, Tennessee|Road bridges on the National Register of Historic Places in Tennessee|Road bridges in Tennessee|U.S. Route 127|Drawbridges on the National Register of Historic Places|National Register of Historic Places in Chattanooga, Tennessee|Steel bridges in the United States|Concrete bridges in the United States |
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