| 词条 | Helena Bridge |
| 释义 |
|bridge_name= Helena Bridge |image= Helena_Bridge.jpg |image_size=300px |caption= |official_name= |also_known_as= |carries= 2 lanes of {{jct|country=USA|US|49}} |crosses= Mississippi River |locale= Helena, Arkansas and Lula, Mississippi |maint= |id= 000000000002899 |design= Cantilever bridge |mainspan= {{Convert|804|ft|m|0}} |length= {{Convert|5204|ft|m|0}} |width= {{Convert|28|ft|m|0}} |clearance= |below= {{Convert|119|ft|m|0}} |traffic= 6,000 (2007) |open= July 27, 1961 |closed= |toll= |map_cue= |map_image= |map_text= |map_width= |coordinates= {{Coord|34|29|48|N|90|35|17|W|region:US_type:landmark}} }} The Helena Bridge is a cantilever bridge carrying U.S. Route 49 across the Mississippi River between Helena, Arkansas and Lula, Mississippi. The main cantilever span was modeled on the similar Benjamin G. Humphreys Bridge which had been built downstream by Arkansas and Mississippi roughly two decades earlier. However, the river navigation issues that led to the replacement of the Humphreys Bridge with the Greenville Bridge do not apply to the Helena Bridge, as the river curve here is far less severe than the one just upstream from the Humphreys and Greenville Bridges. The bridge had a stated construction cost of $14 million, and was opened as a toll bridge in 1961, replacing the previous ferry. The total length of the bridge is slightly less than a mile. [1][2] The bridge superstructure suffered its first substantial damage from a barge accident in July 1997.[3]References1. ^[https://www.arkansashighways.com/historic_bridge/Early%20Arkansas%20Highway%20Magazines/1960-69%20Volumes%208-15%20pdfs/Volume%209%20%E2%80%93%201961/Vol.%209,%20August%201961,%20No.%208.pdf "Helena Celebrates! July 27, 1961"], Arkansas Highways, Vol. 9, no. 8 (August 1961). 2. ^[https://www.newspapers.com/clip/4070274/the_delta_democrattimes/ "Helena Bridge Adds One More River Gateway, Helps Helena"], Delta Democrat-Times, March 31, 1963. Accessed 2016-01-18 via Newspapers.com{{Openaccess}}. 3. ^"Mississippi River bridge out after hit; casino artery severed", 'Associated Press in Log Cabin Democrat, July 17, 1997. See also{{commons category}}
|structure = Crossings |place = Mississippi River |bridge = Helena Bridge |bridge signs = |upstream = Memphis & Arkansas Bridge |upstream signs = |downstream = Charles W. Dean Bridge (proposed) |downstream signs = Future }}{{Arkansas-bridge-struct-stub}}{{Mississippi-bridge-struct-stub}} 11 : Road bridges in Arkansas|Bridges over the Mississippi River|Bridges completed in 1961|Transportation in Phillips County, Arkansas|Buildings and structures in Phillips County, Arkansas|Road bridges in Mississippi|U.S. Route 49|Bridges on the United States Numbered Highways|Articles containing video clips|Cantilever bridges in the United States|Interstate vehicle bridges in the United States |
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