| 词条 | Milton–Madison Bridge | ||
| 释义 |
|bridge_name= Milton–Madison Bridge |image= |caption= |official_name= |also_known_as= Madison–Milton Bridge |carries= 2 lanes of {{jct|country=USA|US|421}} |crosses= Ohio River |locale= Milton, Kentucky and Madison, Indiana |maint= |id= |design= |mainspan= 220 m |length= {{convert|3184|ft}} |width= {{convert|20|ft}} (original bridge) {{convert|40|ft}} plus {{convert|5|ft}} sidewalk (current bridge) |clearance= |below= |traffic= 3,498/day |open= 1929 (original bridge) 2014 (current bridge) |toll=none |coordinates = {{coord|38.729128|-85.370114|display=inline,title}} | map_type = Kentucky | map_relief = yes | map_alt = | map_caption = }} The Milton–Madison Bridge (also known as the Harrison Street Bridge) is a continuous truss bridge that connects Milton, Kentucky and Madison, Indiana. It carries approximately 10,000 cars a day.[1] The old structure was replaced with a completely new continuous truss which was constructed on temporary piers adjacent to the operational span between 2011 and 2012 and slid into place after demolition of the old span using a construction method called "truss sliding."[2] The new crossing opened to vehicle traffic in April 2014, and a pedestrian sidewalk opened that October.[3] DescriptionThis two lane vehicular bridge is the Ohio River crossing for U.S. Route 421. The bridge has a main span of {{convert|600|ft}} and total length of {{convert|3184.2|ft}}. The original bridge had a deck width of a mere {{convert|20|ft}}, and above the deck the vertical clearance was {{convert|16.8|ft}}. The new bridge has a {{convert|40|ft|adj=on}}-wide road bed, plus a {{convert|5|ft|adj=on}} cantilevered pedestrian-only path. Bicyclists are banned from the sidewalk, but may use the new bridge's {{convert|8|ft|adj=on}} shoulders.[3] This bridge is the only vehicular crossing of the Ohio River for {{convert|26|mi}} going upstream (the Markland Bridge near Vevay, Indiana) and {{convert|32|mi}} downstream (the Lewis and Clark Bridge in northeast Louisville).[4] The bridge provides the shortest distance between Indianapolis, Indiana, and Lexington, Kentucky.[5] HistoryBuilt by J.G. White Engineering Corp., construction was started in 1928, and completed in 1929, at the cost of $1,365,101.84. It was opened for traffic on December 20, 1929. Originally a toll bridge, on November 1, 1947 at noon the toll was removed.[5] In 1997 the bridge was refurbished.[4] This was after a 1995 study which could not agree on a new bridge location, so $10 million was used for the refurbishment.[1] ReplacementThe bridge was replaced in the first half of the 2010s, as the original bridge was "functionally obsolete" and "structurally deficient."[6] It had a sufficiency rating of 33 out of a possible 100; its superstructure condition rating was considered "poor".[4] Modern trucks were unable to safely use the old bridge.[1] One of the boons of the new bridge would be to aid a $20 million "resort and entertainment center" where a cotton mill once stood.[7] A Milton–Madison bridge study was begun by the Indiana Department of Transportation and Kentucky Transportation Cabinet on August 26, 2008. The study had to take in account the Madison Historic District, which is a National Historic Landmark, and the National Environmental Policy Act.[1] The Indiana Department of Transportation (INDOT), in a partnership with the Kentucky Transportation Cabinet (KYTC), designed a new bridge to replace the original bridge. The new project was headed mostly by INDOT.[8] The bridge was removed except for several piers in the waterway, which were rehabilitated and widened to accommodate a new, wider steel-truss superstructure. Scour mitigation was also performed on the existing piers. The new bridge also features an ADA-compliant pedestrian walkway. Construction for the new bridge began in the fall of 2010, with the old bridge remaining open during work on the piers. Walsh Construction Company planned to close the bridge for only 10 days during construction rather than an anticipated year-long closure. The team used an innovative construction method called "truss sliding" to "slide" the {{convert|3181|ft|m|adj=mid|-long}} truss into place along steel rails and plates.[9] Emergency ferry service during the 2012 and 2014 bridge closure periods was provided by Madison, Indiana-based, Madison Milton Ferry LLC, in partnership with Anderson Ferry of Hebron, Kentucky. Passenger ferry service was provided by Madison based Rockin Thunder Jet Boat Rides LLC during the bridge closure for the final slide. In 15 days over 4000 passengers and 12 dogs were transported in a 6 passenger Jet Boat between Milton Kentucky and Madison Indiana. The cost of the replacement was $103.7 million.[10] Incidents
Gallery{{Commons category|Milton-Madison Bridge}}See also
References1. ^1 2 3 {{cite web|url=http://www.roundaboutmadison.com/Inside%20Pages/Archived%20Articles/2008/09_08BridgeStudy.htm|title=Kentucky officials announce kickoff of bridge study|date=September 2008|publisher=Kentuckiana Publishing, Inc.|accessdate=2009-01-30|deadurl=yes|archiveurl=https://web.archive.org/web/20110929112436/http://www.roundaboutmadison.com/Inside%20Pages/Archived%20Articles/2008/09_08BridgeStudy.htm|archivedate=2011-09-29|df=}} 2. ^{{cite web|url=http://www.miltonmadisonbridge.com/schedule-funding/|title=Milton–Madison bridge project milestones|accessdate=2014-04-21}} 3. ^1 {{cite press release |url=http://www.miltonmadisonbridge.com/wp-content/uploads/2014/11/Sidewalk-release-FINAL-10-30-14.pdf |title=Madison, Milton Residents Enjoying New Sidewalk |publisher=Milton–Madison Bridge Project |date=October 30, 2014 |accessdate=August 10, 2015 |deadurl=yes |archiveurl=https://web.archive.org/web/20151001133748/http://www.miltonmadisonbridge.com/wp-content/uploads/2014/11/Sidewalk-release-FINAL-10-30-14.pdf |archivedate=October 1, 2015 |df= }} 4. ^1 2 {{cite web|url=http://bridgehunter.com/in/jefferson/madison/|title=Madison-Milton Bridge|last=Baughn|first=James|date=2002–2009|publisher=Historic Bridges of the United States|accessdate=2009-01-30}} 5. ^1 {{cite web|url=http://www.nkyviews.com/trimble/text/trimble_text_free_bridge.htm|title=The Story of the Splendid Milton–Madison Bridge|publisher=nkyviews.com|accessdate=2009-01-30|deadurl=yes|archiveurl=https://web.archive.org/web/20080511210451/http://www.nkyviews.com/trimble/text/trimble_text_free_bridge.htm|archivedate=2008-05-11|df=}} 6. ^{{cite news|url=http://www.courier-journal.com/article/20090130/NEWS0204/901300448|archive-url=https://archive.is/20130119181531/http://www.courier-journal.com/article/20090130/NEWS0204/901300448|dead-url=yes|archive-date=January 19, 2013|title=Indiana panel may focus on Ohio River bridges|last=Weidenbener|first=Lesley|date=January 30, 2009|publisher=Courier-Journal|accessdate=2009-01-30}} 7. ^{{cite web|url=http://www.fox41.com/Global/story.asp?S=8910476|title=Indiana, Kentucky highway officials launch effort to build new Milton–Madison bridge|publisher=FOX 41 (Louisville)|accessdate=2009-01-30}} 8. ^{{cite web|url=http://transportation.ky.gov/contract/Memos/INDOT%20Design%20-%20Build.PDF |title=Archived copy |accessdate=2010-07-06 |deadurl=no |archiveurl=https://web.archive.org/web/20100701080749/http://transportation.ky.gov/contract/Memos/INDOT%20Design%20-%20Build.PDF |archivedate=2010-07-01 |df= }} 9. ^{{cite web|url=http://www.miltonmadisonbridge.com/construction |title=Milton–Madison Bridge Official Construction site |accessdate=2011-02-05 |deadurl=yes |archiveurl=https://web.archive.org/web/20101206204120/http://www.miltonmadisonbridge.com/construction/ |archivedate=2010-12-06 |df= }} 10. ^{{citation | url = http://www.bridgeweb.com/MemberPages/Article.aspx?typeid=3&id=2786 | title = Raising Expectations | journal = Bridge Design & Engineering | date = 28 August 2012 | accessdate = 8 August 2014 }} 11. ^{{cite news|url=http://www.wdrb.com/story/24946225/no-word-on-when-milton-madison-bridge-will-reopen-after-accident |title=No word on when Milton–Madison Bridge will reopen after accident |first=Courtney |last=Godfrey |publisher=WDRB |location=Louisville, Kentucky |date=March 11, 2014 |accessdate=March 12, 2014}} External links
|structure = Bridges |place = Ohio River |bridge = Milton–Madison Bridge |bridge signs = |upstream = Markland Dam Bridge |upstream signs = KY 1039 |downstream = Lewis and Clark Bridge |downstream signs = }}{{DEFAULTSORT:Milton-Madison Bridge}} 22 : Bridges completed in 1929|Buildings and structures demolished in 2013|Bridges completed in 2014|Bridges over the Ohio River|Madison, Indiana|Continuous truss bridges in the United States|Transportation buildings and structures in Jefferson County, Indiana|Buildings and structures in Trimble County, Kentucky|Transportation in Trimble County, Kentucky|Road bridges in Indiana|Road bridges in Kentucky|U.S. Route 421|Bridges on the United States Numbered Highways|Former toll bridges in Indiana|Former toll bridges in Kentucky|1929 establishments in Indiana|1929 establishments in Kentucky|2013 disestablishments in Indiana|2013 disestablishments in Kentucky|2014 establishments in Indiana|2014 establishments in Kentucky|Steel bridges in the United States |
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