Interstate 240 (Tennessee)

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Interstate 240 marker
Interstate 240
I-240 highlighted in red
Route information
Auxiliary route of I-40
Maintained by TDOT
Length19.27 mi[1] (31.01 km)
Existed1970–present
Major junctions
West end I-40 in Memphis
 
East end I-40 / Sam Cooper Boulevard in Memphis
Location
CountiesShelby
Highway system
← SR 239→ SR 240

Interstate 240 (I-240) is a 19.27-mile-long (31.01 km) Auxiliary Interstate Highway in the U.S. state of Tennessee. It forms a loop with its parent I-40 around the eastern neighborhoods of Memphis. It travels from an interchange with I-40 east of downtown to an interchange with I-40, US 79, and Sam Cooper Boulevard in East Memphis, providing access to Memphis International Airport and the eastern neighborhoods. The section in East Memphis around Walnut Grove Road is the busiest interstate in Tennessee, with an AADT of just under 200,000 vehicles.[2] The western leg of I-240 has been approved to be signed as I-69.

Route description[]

I-240 begins east of Downtown Memphis at an interchange with I-40. The freeway continues south, running through Midtown Memphis and intersects US 78, though unsigned. I-240 continues to an interchange with I-55 in South Memphis, where it changes direction. Continuing east, I-240 travels along the northern bank of Nonconnah Creek, providing access to Memphis International Airport and the eastern neighborhoods of Memphis. The highway crosses US 78 again, this time, signed. At an interchange with SR 385, I-240 turns and proceeds north. One mile later is the modified interchange with US 72 and I-240 ends at a stack interchange with I-40, US 70, US 79, US 64, and Sam Cooper Boulevard in East Memphis.

History[]

1955 Interstate Highway plan for Memphis

I-240 was first planned circa 1955, but it was to have been a 30.8-mile (49.6 km) beltway to completely encircle midtown Memphis, with the exception of the segment between Interstates 40 and 55, which was proposed as Interstate 255. Later, that number was decommissioned in favor of I-240 running in a full loop, with I-40 running from downtown to east Memphis. However, in 1957 citizens collected 10,000 signatures protesting the route, which cut through Overton Park in midtown. The controversy lasted until the 1970s, when the Supreme Court ruled in favor of the citizens. This effectively cancelled the Overton Park routing, shifting I-40 onto the northern leg of I-240. Part of the proposed I-40 route was already built from N. Highland St. east to the I-40/240 junction. The road is now called Sam Cooper Boulevard, and is owned by the city.

On December 23, 1988, a tank truck hauling liquefied propane crashed at the interchange between I-40 and the western terminus of I-240 and exploded, producing a massive fireball that enveloped the interstate and started multiple structural fires. The tank was then propelled from the highway by the force of the combusting gas within the tank and crashed into a nearby duplex, starting additional fires. The incident resulted in the deaths of six motorists and three occupants of nearby buildings, and injured ten people.[3][4][5]

In 2000, the City of Memphis built an extension to the former I-40 section of Sam Cooper Blvd. This extension runs west from N. Tillman St. (the former entry/end point for Sam Cooper Boulevard) as a limited access parkway to East Parkway N. (a former exit for the proposed "Overton Park route").

The interstates overlapped around the northern bypass of Memphis for many years, but the northern leg eventually came to be known only as I-40, eliminating the concurrency and turning I-240 into a semi-beltway. Exits were not renumbered.

On January 18, 2008, the Federal Highway Administration authorized the states of Mississippi and Tennessee to extend I-69 from the I-40/TN 300 interchange in north Memphis to the I-55/I-69 interchange in Hernando; however, Tennessee has not yet signed the extension of the route, although Mississippi has already done so.[6]

On March 24, 2010, a sinkhole formed in the two leftmost northbound lanes north of the Walnut Grove interchange. It was initially thought to have been a smaller pothole and had been paved over the day before. It formed around 3:00 in the afternoon and damaged several cars, although no injuries were reported. These two lanes were shut down until March 28 while the sinkhole was filled.

Recent construction[]

I-240 has seen significant reconstruction over the past decade, as usage has exceeded design capacity. Both interchanges with I-40 have been reconstructed due to the amount of traffic taking I-40 through Memphis. The portion between Lamar Ave to Mt. Moriah Rd was widened to 8 through lanes in the early 2000s.

A widening project began on the stretch of I-240 from north of TN 385 to north of Walnut Grove Road in April 2011. This was necessary due to increased traffic volumes since the freeway's construction. This included adding a lane to each side (which made it an average of 4 lanes on each side), retaining walls, noise barriers, and a redesigning of the Poplar Avenue interchange: a main source of congestion. The project was completed in late 2014.[7]

In Fall 2013, TDOT began work to reconstruct the I-240/I-40 eastern interchange for a second time. This reconstruction included construction of two additional flyover ramps and the widening of Sam Cooper Boulevard. Construction was completed in December 2016.[8]

Exit list[]

The exits on I-240 run clockwise, reflecting their initial numbering as part of a circumferential beltway. Because of the re-routing of I-40, I-40 retains I-240's historic exit numbers 1 through 12A-C. The entire route is in Memphis, Shelby County.

mikmExitDestinationsNotes
0.000.00 I-40 west – Little RockCounterclockwise terminus
12A US 64 / US 70 / US 79 (Summer Avenue, SR 1)No westbound exit; eastbound exit via White Station Road
12BSam Cooper BoulevardSam Cooper Blvd. exits 10A–B
12C I-40 east – Nashville, KnoxvilleEastbound exit and westbound entrance; I-40 exit 10A
1.812.9113Walnut Grove Road (SR 23 west)Signed as exits 13A (west) and 13B (east) westbound; eastern terminus of SR 23
3.675.9115 US 72 (SR 57 / Poplar Avenue) – GermantownSigned as exits 15A (east) and 15B (west)
5.18–
5.30		8.34–
8.53		16 SR 385 east (Bill Morris Parkway) – ColliervilleWestern terminus of SR 385
6.079.7717Mount Moriah Road
6.9411.1718Perkins Road
8.3313.4120 SR 176 south (Getwell Road)Signed as exits 20A (south) and 20B (north) eastbound; northbound terminus of SR 176
9.7515.6921 US 78 (SR 4 / Lamar Avenue) – BirminghamWestbound exit to northwest-bound Lamar Avenue and second westbound entrance via Prescott Road
11.4818.4823 Airways Boulevard - Memphis International AirportSigned as exits 23A (north) and 23B (south)
12.76–
12.87		20.54–
20.71		24Millbranch Road / Nonconnah Boulevard
13.8622.3125 I-55 – Jackson, Miss., St. LouisSigned as exits 25A and 25B; I-55 exit 6; south end of future I-69 overlap
14.5323.3826Norris Road
16.3826.3628South ParkwaySigned as exits 28A (east) and 28B (west)
17.8528.7329Lamar Avenue ( US 78 / SR 4) / Crump Boulevard
18.36–
18.49		29.55–
29.76		30Union Avenue ( US 64 / US 70 / US 79 / US 51)Northbound exit and southbound entrance
Madison AvenueSouthbound exit and northbound entrance
19.1330.7931 I-40 west – Little RockNorthbound exit and southbound entrance; I-40 exit 1E
19.8031.8732 SR 14 (Jackson Avenue)Northbound exit and southbound entrance; before the exit was redesigned, was signed as I-40 exit 1F-G
- I-40 east – NashvilleClockwise terminus; north end of future I-69 overlap
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  •       Concurrency terminus
  •       Incomplete access

See also[]

References[]

  1. ^ Staff (October 31, 2002). "Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of October 31, 2002". Route Log and Finder List. Federal Highway Administration.
  2. ^ "I-240 Noise Barrier Decision Creates Ruckus in East Memphis". Memphis Commercial Appeal. April 17, 2011. Retrieved September 19, 2011.
  3. ^ Isner, Michael S. (February 6, 1990). Fire Investigation Report: Propane Tank Truck Incident, Eight People Killed, Memphis, Tennessee, December 23, 1988 (Report). National Fire Protection Association. Archived from the original on January 28, 2021. Retrieved January 18, 2021.
  4. ^ Serafino, Phil (December 23, 1988). "A propane tanker truck crashed into a bridge support..." United Press International. Retrieved January 12, 2021.
  5. ^ "Propane Truck Blows Up; 8 Die, 10 Hurt". Los Angeles Times. December 24, 1988. Retrieved January 12, 2021.
  6. ^ Capka, J. Richard (January 18, 2008). "Letter to Paul D. Degges]" (PDF). Federal Highway Administration. Retrieved May 28, 2008.[permanent dead link]
  7. ^ "Interstate 240 Widening Project". Tennessee Department of Transportation. Archived from the original on April 13, 2014. Retrieved September 19, 2011.
  8. ^ "I-40/I-240 Interchange". Tennessee Department of Transportation. Archived from the original on May 19, 2011. Retrieved October 20, 2014.

External links[]

Route map:

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