Interstate 75 in Tennessee

Infobox road
state=TN
type=I
maint=Tennessee DOT
route=75

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length_mi=161.86
length_round=2
length_ref= [ [http://www.fhwa.dot.gov/reports/routefinder/table3.cfm FHWA Route Log] ]
established=1963-1974 [ [http://www.tninterstate50.com/maps/easttn.htm Interstate 50th Anniversary (TDOT)] ]
direction_a=South
terminus_a=Jct|state=GA|I|75 at Georgia state line
junction=Jct|state=TN|I|24 in Chattanooga
Jct|state=TN|I|40 in Knoxville
Jct|state=TN|I|640 in Knoxville
Jct|state=TN|I|275 in Knoxville
direction_b=North
terminus_b=Jct|state=KY|I|75 at Kentucky state line
previous_type=Secondary
previous_route=74
next_type=Dual
next_route=75In the State of Tennessee, Interstate 75 runs from Chattanooga to Jellico by way of Knoxville. Interstate 75 enters the East Tennessee region following the Tennessee Valley from Georgia, all the way through Knoxville to near Lake City, then climbs into the Cumberland Mountains before crossing over into Kentucky.

Interstate 75 originally continued into downtown Knoxville then turned to the north at Malfunction Junction, following what is now signed as Interstate 275. When the western section of Interstate 640 was completed in 1982, Interstate 75 was moved to overlap the auxiliary route to divert through traffic away from downtown in preparation for the 1982 World's Fair. This concurrency is somewhat unusual in that the exit numbers and mile markers follow the auxiliary route I-640 instead of Interstate 75 milage.

A major accident took place in December 1990 due to fog that resulted in 13 deaths. The accident was later profiled on the show Forensic Files.

In March 2005, the southbound lanes of Interstate 75 were shut down between mile marker 141 to 143 in Campbell County due to a rockslide below the roadway that caused the pavement to partially collapse. [ [http://www.tdot.state.tn.us/news/2005/031105.htm TDOT news release] ]

On May 1, 2008 I-75 Northbound traffic was re-routed back along its original path in downtown Knoxville along Interstate 275 as part of SmartFix 40, a major construction project that includes closing a portion of I-40. Traffic was re-routed along I-275 as the ramp from I-640 Eastbound/I-75 Northbound to I-75 Northbound is only one lane which causes traffic delays at peak times.

Lane configurations

*Between Kentucky line and Exit 112 (2 lanes on each side)
*From Exit 112 to I-275/I-640 interchange (3 lanes on each side)
*Along I-640 concurrency (3 to 4 lanes each way)
*From I-40/I-640 western split to I-140 (Exit 376) (4 to 5 lanes each way)
*From I-140 to I-40/I-75 split west of Farragut (3 lanes each way)
*From I-40 to Exit 7 (SR 317 near Chattanooga) (2 lanes each way)
*From Exit 7 to SR 153 (Exit 3) (4 lanes each way)
*From SR 153 to I-24 (3 lanes each way)
*Through I-24 interchange (2 lanes each way)
*From EB 24 to SB 75 ramp to Georgia line (3 through lanes each way, auxiliary lane SB for US 41 exit)

Exit list

References