Editing Hart Bridge (section)

{{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.