Editing Hart Bridge

{{short description|Bridge in Jacksonville, Florida, US}}
{{Use American English|date=January 2025}}
{{Use mdy dates|date=September 2019}}
{{Infobox bridge
|name= Isaiah D. Hart Bridge
|image= HartBridgeJax.jpg
|image_size=300px
|caption= The Hart Bridge from the south bank
|official_name=Isaiah David Hart Bridge
|id=720107
|locale=[[Jacksonville, Florida]]
|maint=[[Florida Department of Transportation]]
|carries={{jct|state=FL|US-Alt|1|dab1=Jacksonville|SR|228}}<br />(four general purpose lanes)
|crosses=[[St. Johns River]]
|design= [[Continuous truss bridge]]
|mainspan={{convert|331.6|m}} 
|length={{convert|1171.7|m}}|width={{convert|19.7|m}}|clearance={{convert|6.14|m}}
|below={{convert|42.9|m}} 
|open={{start date|1967|11|2}}
|coordinates = {{coord|30.315|-81.6266|region:US-FL|display=inline,title}}
}}

The '''Isaiah David Hart Bridge''' is a [[truss bridge]] that spans the [[St. Johns River]] in [[Jacksonville, Florida]]. It carries [[U.S. Route 1 Alternate (Jacksonville, Florida)|U.S. Route&nbsp;1 Alternate]] (US&nbsp;1 Alt.) and [[Florida State Road 228|State Road&nbsp;228]] (SR&nbsp;228). It is named after [[Isaiah Hart]], the founder of Jacksonville and is often referred to as the Hart Bridge. It was designed by [[Sverdrup & Parcel]].<ref name=Durkee>Durkee, Jackson, [https://bridgeworld.net/wordpress/archives/docs/longest%20bridge.pdf "World's Longest Bridge Spans"], National Steel Bridge Alliance, May 24, 1999</ref> The Hart Bridge is one of the longest truss bridges in the world, and has the world's third [[List of longest continuous truss bridge spans|longest main span]] of any truss bridge.

==History==
The Isaiah David Hart Bridge was completed in 1967 at a cost of $8.83 million. The official name of the bridge is the Isaiah David Hart Bridge after the founder of Jacksonville, [[Isaiah Hart]]. The bridge was built on a bond to be paid off with tolls until they were lifted in 1989. The bridge helped relieve congestion from the [[Mathews Bridge]] and the [[Main Street Bridge (Jacksonville)|Main Street Bridge]].<ref>{{cite web|title=Call Box: Hart Bridge has a distinctive history and a heady aroma|url=https://jacksonville.com/reason/call-box/2013-06-28/story/call-box-hart-bridge-has-distinctive-history-and-heady-aroma|website=Jacksonville.com|access-date=January 18, 2018}}</ref> In 1999 the Hart Bridge was ranked 19th as one of the longest [[cantilever bridge]]s in the world.<ref>{{cite web|title=Seven Bridges: Hart Bridge|url=https://thecoastal.com/culture/seven-bridges-jacksonville/|website=thecoastal.com|access-date=January 18, 2018}}</ref>

==Details==
[[File:Isaiah David Hart Bridge 5.jpg|thumb|left|Interior view of the Hart Bridge.]] 
The bridge has traditionally been painted green and is often referred to as "The Green Monster" by locals.<ref>{{cite web|url=https://www.jacksonville.com/tu-online/stories/030908/spo_255229021.shtml|title=SUNDAY MORNING RIVER RUNNER|publisher=[[Jacksonville.com]]|access-date=October 14, 2008|archive-url=https://web.archive.org/web/20110812133410/https://jacksonville.com/tu-online/stories/030908/spo_255229021.shtml|archive-date=August 12, 2011|url-status=dead}}</ref><ref>[https://www.jaxairnews.com/stories/031705/mil_riverrun001.shtml Jax Air News] {{webarchive|url=https://web.archive.org/web/20061018222514/https://www.jaxairnews.com/stories/031705/mil_riverrun001.shtml |date=October 18, 2006 }}</ref> Daily traffic averages 52,000 vehicles.<ref>{{cite web|last1=Strickland|first1=Sandy|title=Call Box: At 50, Hart has carried vehicles, runners and movie cameras|url=https://jacksonville.com/news/metro/call-box/2017-10-20/call-box-50-hart-has-carried-vehicles-runners-and-movie-cameras|website=Jacksonville.com|access-date=January 18, 2018}}</ref> The stretch of highway between downtown and [[Beach Boulevard (Jacksonville)|Beach Boulevard]] is known as the Commodore Point Expressway, but more commonly referred to by locals as the Hart Bridge Expressway.

The bridge is a steel [[cantilever bridge]] which is a type of [[continuous truss bridge]]. The bridge's main span is uncommon for a cantilever bridge in that the truss over the main channel tapers upward and the roadway below is suspended from the truss by steel hangers.
{{clear}}

==Gallery==
<gallery>
File:Hart Bridge in Jacksonville.jpg|Hart Bridge view from [[TIAA Bank Field]].
File:Isaiah David Hart Bridge.jpg|Driving on the Hart Bridge in 2019.
File:Below hart bridge.jpg|Underneath the Hart Bridge.
File:Isaiah D. Hart Bridge.jpg|View of the Hart Bridge from the [[Neighborhoods of Jacksonville#Eastside|Eastside]].
File:Hart bridge at night.jpg|Hart Bridge at night.
</gallery>

==See also==
* {{Portal-inline|Transport}}
* {{Portal-inline|Engineering}}
* {{Portal-inline|Florida}}
* [[List of crossings of the St. Johns River]]

==References==
{{Reflist}}

==External links==
{{Commons category|Hart Bridge}}
* {{Structurae|id=20013197|title=Isaiah D. Hart Bridge}}
*[http://www.ci.jax.fl.us/NR/rdonlyres/e37inchbtgsjncjqzrmjkbnjoneublrb3q7z5ocwut7kuyo22ni7qxthqlglaqzgwamppxzyauisv42gzd7qqmj3qcd/bridges.pdf City of Jacksonville article about the bridges]{{dead link|date=October 2017 |bot=InternetArchiveBot |fix-attempted=yes }}
{{jaxbridges}}

{{Crossings navbox
|structure       = Crossings
|place           = [[List of crossings of the St. Johns River|St. Johns River]]
|bridge          = Hart Bridge
|bridge signs    = [[File:alt plate.svg|20px]][[File:No image wide.svg|20px]]<br />[[File:US 1.svg|20px]][[File:Florida 228.svg|25px]]
|upstream        = [[Main Street Bridge (Jacksonville)|Main Street Bridge]]
|upstream signs  = [[File:US 1.svg|20px]] [[File:US 90.svg|20px]]
|downstream      = [[Mathews Bridge]]
|downstream signs = [[File:alt plate.svg|20px]] [[File:no image wide.svg|25px]]<br />[[File:US 90.svg|20px]] [[File:Florida 115.svg|25px]]
}}
{{Bridges of Florida}}
{{Jacksonville attractions}}

[[Category:Bridges in Jacksonville, Florida]]
[[Category:Bridges over the St. Johns River]]
[[Category:Road bridges in Florida]]
[[Category:Steel bridges in the United States]]
[[Category:Continuous truss bridges in the United States]]
[[Category:Bridges completed in 1967]]
[[Category:Former toll bridges in Florida]]
[[Category:Southside, Jacksonville]]
[[Category:U.S. Route 1]]
[[Category:Bridges of the United States Numbered Highway System]]
[[Category:1967 establishments in Florida]]
[[Category:Cantilever bridges in the United States]]