View source for Interstate 310 (Louisiana)

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{{Short description|Interstate Highway in Louisiana}}
{{For|the never-built freeway that would have been located in New Orleans, Louisiana, and once designated as Interstate 310|Vieux Carré Riverfront Expressway}}
{{Use mdy dates|date=January 2025}}

{{Infobox road
|state=LA
|type=I
|route=310
|map={{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|frame-height=290|frame-lat=29.949|frame-long=-90.351|zoom=11|type=line|raw={{Wikipedia:Map data/Wikipedia KML/Interstate 310 (Louisiana)}}}}
|map_custom=yes
|map_notes=I-310 highlighted in red
|alternate_name=
|length_mi=11.709
|length_ref=<ref name="LRS 2015">{{cite web |url= http://wwwsp.dotd.la.gov/Inside_LaDOTD/Divisions/Mgmt_Finance/GIS/Pages/GIS_Data.aspx |title= GIS Data |date= September 2015 |author= Louisiana Department of Transportation and Development |author-link= Louisiana Department of Transportation and Development |publisher= Louisiana Department of Transportation and Development |access-date= February 9, 2016}}</ref>
|formed= 1983<ref name="T-P 10-7-1983"/>
|history=I-310 planned in 1977 and opened in stages between 1983 and 1993.
|spur_type=I
|spur_of=10
|direction_b=North
|terminus_b={{jct|state=LA|I|10}} west of [[Kenner, Louisiana|Kenner]]
|junction={{jct|state=LA|US|61}} in [[St. Rose, Louisiana|St. Rose]]
|direction_a=South
|terminus_a={{jct|state=LA|Future|49|US|90|LA|3127}} in [[Boutte, Louisiana|Boutte]]
|parishes=[[St. Charles Parish, Louisiana|St. Charles]]
|previous_type=LA
|previous_route=309
|next_type=LA
|next_route=310
}}

'''Interstate&nbsp;310''' ('''I-310''') is a short [[spur route]] of [[Interstate 10 in Louisiana|I-10]] west of [[New Orleans]], located entirely in [[St. Charles Parish, Louisiana]]. It begins at a point on I-10 just west of [[Louis Armstrong New Orleans International Airport]] and the city of [[Kenner, Louisiana|Kenner]]. It travels southward as an elevated freeway across the [[LaBranche Wetlands]] and intersects [[U.S. Route 61 in Louisiana|U.S. Route&nbsp;61]] (US&nbsp;61) in [[St. Rose, Louisiana|St. Rose]]. The highway crosses the [[Mississippi River]] from [[Destrehan, Louisiana|Destrehan]] to [[Luling, Louisiana|Luling]] via the [[Hale Boggs Memorial Bridge]]. After a brief concurrency with [[Louisiana Highway 3127|Louisiana Highway&nbsp;3127]] (LA&nbsp;3127), I-310 terminates at [[U.S. Route 90 in Louisiana|US&nbsp;90]] in [[Boutte, Louisiana|Boutte]].

==Route description==
[[File:Haleboggsbridge.jpg|thumb|left|[[Hale Boggs Memorial Bridge]]—Part of I-310, November&nbsp;2006]]
I-310's southern terminus is at US&nbsp;90, where it travels north through flat marshlands. The southernmost mile ({{convert|1|mi|km|disp=out}}) was originally built as part of [[Louisiana Highway 3127|LA&nbsp;3127]], an inland bypass to [[Louisiana Highway 18|LA&nbsp;18]], and is cosigned with I-310. North of I-310's first interchange, LA&nbsp;3127 leaves the Interstate, as I-310 heads towards the [[Mississippi River]]. After the next interchange, LA&nbsp;18, I-310 crosses the Mississippi River via the [[Hale Boggs Memorial Bridge]] (Luling–Destrehan Bridge), a cable-stayed bridge connecting the towns of [[Luling, Louisiana|Luling]] and [[Destrehan, Louisiana|Destrehan]].

North of the bridge, there is an interchange with LA&nbsp;48. I-310 then proceeds to the [[LaBranche Wetlands Bridge]], a {{convert|5|mi|km|adj=on|spell=in}} bridge over environmentally sensitive wetlands between Destrehan and the I-10 interchange. The northernmost {{convert|2|mi|km|spell=in}} of this bridge between the US&nbsp;61 and I-10 interchanges was constructed using a method known as "end-on construction". This is a top–down technique in which construction platforms are mounted on concrete piles to avoid disrupting the environment below. From these platforms, the next set of piles and bridge viaducts are placed, allowing the platform to progress forward for the next set.<ref>{{cite web |first= Deirdre |last= Remley |date= n.d. |url= http://www.fhwa.dot.gov/Environment/wetlands.htm |archive-url= https://web.archive.org/web/19990504190949/http://www.fhwa.dot.gov/environment/WETLANDS.htm |url-status= dead |archive-date= May 4, 1999 |title= Wetlands and Aquatic Ecosystem |publisher= [[Federal Highway Administration]] |access-date= February 9, 2016}}</ref> The interstate terminates at I-10 just west of [[Kenner, Louisiana|Kenner]].<!--http://maps.google.com/maps?saddr=Unknown+road&daddr=I-310+S&hl=en&sll=30.000566,-90.294399&sspn=0.009607,0.013797&geocode=FabPyQEdgjme-g%3BFRAmyAEdYp2c-g&vpsrc=0&mra=ls&t=h&z=12-->{{clear left}}

==History==
I-310 was originally planned, along with [[Interstate 510|I-510]], as part of '''Interstate 410''', a southern beltway around the New Orleans metro area. In 1977, I-410 was canceled and the two Interstates were split into their current components.<ref>{{cite web |first= Richard F. |last= Weingroff |date= November 18, 2015 |url= https://www.fhwa.dot.gov/infrastructure/neworleans.cfm |title=The Battles of New Orleans: Vieux Carré Riverfront Expressway (I-310) |work= Highway History |publisher= Federal Highway Administration |access-date= February 9, 2016}}</ref> The [[Hale Boggs Memorial Bridge]] was completed in October&nbsp;1983 and was the first portion of I-310 to open.<ref name="T-P 10-7-1983">{{cite news |last=Thibodeaux |first=Ron |title=Goodbye Ferry, Hello New Bridge, St. Charles Cheers |newspaper=The Times-Picayune The States-Item |location=New Orleans |date=October 7, 1983 |page=1}}</ref> The west bank approach, extending to US&nbsp;90 in Boutte was opened in March&nbsp;1988,<ref name="T-P 3-23-1988">{{cite news |title=Roemer to Speak at Opening of I-310 Link |newspaper=The Times-Picayune |location=New Orleans |date=March 23, 1988 |page=B5}}</ref> followed in July&nbsp;1991 by the east bank approach as far as US&nbsp;61.<ref name="T-P 10-1-1992">{{cite news |last=Scallan |first=Matt |title=Spring Opening Set as I-310 Work Enters Last Leg |newspaper=The Times-Picayune |location=New Orleans |date=October 1, 1992 |page=B1}}</ref> I-310 was completed on May&nbsp;7, 1993 when the final section between US&nbsp;61 and I-10, including much of the [[LaBranche Wetlands Bridge]], was opened to traffic.<ref name="T-P 5-8-1993">{{cite news |last=Scallan |first=Matt |title=Last Link of I-310 Completed |newspaper=The Times-Picayune |location=New Orleans |date=May 8, 1993 |page=A1}}</ref>

==Future==
{{Unreferenced section|date=October 2023}}
Future plans for I-310 are to relocate the southern end of the interstate to connect with the future extension of [[Interstate 49 in Louisiana|I-49]] from [[Lafayette, Louisiana|Lafayette]] to [[New Orleans, Louisiana|New Orleans]]. Another proposal in the Louisiana Statewide Transportation Plan proposes an extension of the [[Earhart Expressway]] ([[Louisiana Highway 3139|Louisiana Highway&nbsp;3139]]) westward from Dickory Avenue to I-310, to serve as a freeway alternative to I-10.

With discussions of extending I-510 across the Mississippi River, there is speculation of reviving the idea of a connection between I-310 and I-510.

==Exit list==
{{LAinttop|exit|parish=St. Charles|length_ref=<ref name="LRS 2015"/>}}
{{LAint|exit
|location=Boutte
|mile2=11.445
|mile=11.705
|type=concur
|exit=
|road={{jct|state=LA|<!--I|49|-->US|90|LA|3127|dir3=south|city1=Boutte|city2=New Orleans|city3=Houma}}
|notes=Southern terminus of I-310 / LA&nbsp;3127
}}
{{LAint|exit
|location=Luling
|lspan=2
|mile2=9.579
|mile=10.813
|type=concur
|exit=10
|road={{jct|state=LA|LA|3127|dir1=north|city1=Donaldsonville}}
|notes=North end of LA&nbsp;3127 concurrency
}}
{{LAint|exit
|mile2=7.743
|mile=8.457
|exit=7
|road={{jct|state=LA|LA|18|city1=Luling|city2=Hahnville}}
|notes=
}}
{{jctbridge|exit
|state=LA
|location_special=[[Mississippi River]]
|mile2=6.144
|mile=8.242
|bridge=[[Hale Boggs Memorial Bridge]]
}}
{{LAint|exit
|location=Destrehan
|lspan=2
|mile2=6.286
|mile=6.765
|exit=6
|road={{jct|state=LA|LA|48|city1=Destrehan|city2=St. Rose}}
|notes=
}}
{{jctbridge|exit
|mile=5.379
|bridge=South end of [[LaBranche Wetlands Bridge]]
}}
{{LAint|exit
|location=St. Rose
|mile2=2.367
|mile=3.583
|exit=2
|road={{jct|state=LA|US|61|city1=Kenner|city2=Norco}}
|notes=US&nbsp;61 is [[Airline Highway]] (not signed here)
}}
{{LAint|exit
|location=none
|mile2=0.000
|mile=0.620
|exit=1-1A
|road={{jct|state=LA|I|10|city1=New Orleans|city2=Baton Rouge}}
|notes=Northern terminus; signed as exits 1 (west) and 1A (east); exit 220 on I-10
}}
{{jctbridge|exit
|location=none
|mile=0.000
|bridge=North end of [[LaBranche Wetlands Bridge]]
}}
{{jctbtm|exit|keys=concur}}

==See also==
{{portal||U.S. Roads|Louisiana}}
* [[List of auxiliary Interstate Highways]]
* [[List of Interstate Highways in Louisiana]]

==References==
{{reflist}}

==External links==
{{commons category|Interstate 310}}
{{Attached KML|display=inline,title|from=Interstate 310}}
* [https://web.archive.org/web/20130526094137/http://www.dotd.la.gov/planning/mapping/home.aspx La&nbsp;DOTD State, District, and Parish Maps]

{{3di|10}}

{{authority control}}

{{DEFAULTSORT:Interstate 10-3}}
[[Category:Auxiliary Interstate Highways|10-3]]
[[Category:Interstate 10|310]]
[[Category:Interstate Highways in Louisiana|10-3]]
[[Category:Transportation in St. Charles Parish, Louisiana]]

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