Interstate 310 (Louisiana)

For the never-built freeway that would have been located in New Orleans, Louisiana, and once designated as Interstate 310, see Vieux Carré Riverfront Expressway.

Interstate 310
Route of I-310 highlighted in red
Route information
Maintained by Louisiana DOTD
Length	11.709 mi (18.844 km)
History	I-310 planned in 1977 and opened in stages between 1983 and 1993.
NHS	Entire route
Major junctions
North end	I-10 west of Kenner
Major intersections	US 61 in St. Rose
South end	US 90 / LA 3127 in Boutte
Location
Country	United States
State	Louisiana
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Louisiana State Highway System Interstate US State Scenic
← LA 309 → LA 310

Hale Boggs Memorial Bridge - Part of Interstate 310

Interstate 310 (abbreviated I-310) is a short spur route of Interstate 10 west of New Orleans, located entirely in St. Charles Parish, Louisiana, United States.

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

Route description

Interstate 310's southern terminus is at US 90, where it travels north through flat marshlands. The southernmost mile was originally built as part of Louisiana Highway 3127, an inland bypass to Louisiana Highway 18, and is cosigned with I-310. North of I-310's first interchange, LA 3127 leaves the interstate, as I-310 heads towards the Mississippi River. After the next interchange, LA 18, Interstate 310 crosses the Mississippi River via the Hale Boggs Memorial Bridge (Luling-Destrehan Bridge), a cable-stayed bridge connecting the towns of Luling and Destrehan.

North of the bridge, there is an interchange with LA 48. I-310 then proceeds to the LaBranche Wetlands Bridge, a five-mile (8 km) bridge over environmentally sensitive wetlands between Destrehan, Louisiana and the I-10 interchange. The northernmost two miles (3 km) of this bridge between the US 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. The interstate terminates at I-10 just west of Kenner.

Interstate 310's exits are numbered from the parent route to the remote terminus, as is normal for spur Interstates.

History

Interstate 310 was originally planned, along with Interstate 510, as part Interstate 410, a southern beltway around the New Orleans metro area. In 1977, I-410 was cancelled and the two interstates were split into their current components. The Hale Boggs Memorial Bridge was completed in 1983, one of the first parts of I-310 to open. I-310 was built through the 1980s and early 1990s and was completed on May 7, 1993, with the last section of construction being the LaBranche Wetlands Bridge.

Future

Future plans for I-310 are to relocate the southern end of the interstate to connect with the future extension of Interstate 49 from Lafayette to New Orleans. Another proposal in the Louisiana Statewide Transportation Plan proposes an extension of the Earhart Expressway (Louisiana Highway 3139) westward from Dickory Avenue to Interstate 310, to serve as a freeway alternative 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

The entire route is in St. Charles Parish.

Location	mi	km	Exit	Destinations	Notes
​	0.00	0.00	1A	I-10 east – New Orleans	Northbound exit and southbound entrance
​	0.00	0.00		I-10 west – Baton Rouge	Northbound exit and southbound entrance
St. Rose			2	US 61 – Kenner, Norco	To Louis Armstrong New Orleans International Airport
Destrehan			6	LA 48 – St. Rose, Destrehan
Mississippi River			Hale Boggs Memorial Bridge
Luling			7	LA 18 – Hahnville, Luling
Boutte			10	LA 3127 north – Donaldsonville	Northern end of concurrency with LA 3127
	11.25	18.11		US 90 – Houma, Boutte, New Orleans	Southbound exit and northbound entrance Southeastern terminus of LA 3127
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

External links

Template:Attached KML/Interstate 310 (Louisiana)

KML is not from Wikidata

• LA DOTD website
• Kurumi at I-310