ROUTE LOG
GA STATE LINE: 0 - 0
EXIT 1 - US 41, US 76, TN 8: 0.3 - 0.3
EXIT 2 - I-24 (exit 185), US 74 Begin: 1.0 - 1.3
EXIT 3 (old exit 2) - TN 320: 2.2 - 3.5
EXIT 4 (old exit 3) - TN 153: 0.8 - 4.3
EXIT 4A - Hamilton Place Blvd: 0.8 - 5.1
EXIT 5 (old exit 4) - Shallowford Rd: 0.6 - 5.7
EXIT 7 (old exit 5) - US 11 SB, US 64 WB, TN 2 WB, TN 317 WB: 1.8 - 7.5
EXIT 9 - TN 317 EB: 1.5 - 9.0
EXIT 11 (old exit 6) - US 11 NB, US 64 EB, TN 2 EB: 2.6 - 11.6
Bradley-Hamilton Line: 4.0 - 15.6
EXIT 20 (old exit 7) - US 74 EB, TN 311: 4.8 - 20.4
Exit 25 (old exit 8) - TN 60: 4.5 - 24.9
EXIT 27 - Paul Huff Pkwy: 1.8 - 26.7
EXIT 33 (old exit 9) - TN 308: 6.0 - 32.7
McMinn-Bradley Line: 2.2 - 34.9
EXIT 36 (old exit 10) - TN 163: 1.1 - 36.0
EXIT 42 (old exit 11) - TN 39: 6.2 - 42.2
EXIT 49 (old exit 12) - TN 30: 6.5 - 48.7
EXIT 52 (old exit 13) - TN 305: 3.4 - 52.1
EXIT 56 (old exit 14) - TN 309: 4.0 - 56.1
Monroe-McMinn Line: 3.8 - 59.9
EXIT 60 (old exit 15) - TN 68: 0.6 - 60.5
Loudon-Monroe Line: 5.9 - 66.4
EXIT 68 (old exit 16) - TN 323: 2.3 - 68.7
EXIT 72 (old exit 17) - TN 72: 3.4 - 72.1
EXIT 76 (old exit 18) - TN 324: 4.5 - 76.6
EXIT 81 (old exit 19) - US 321, TN 95: 4.8 - 81.4
EXIT 84 - I-40 WB (exit 368): 3.1 - 84.5
Knox-Loudon Line: 1.0 - 85.5
EXIT 369 - Watt Rd: 0.3 - 85.8
EXIT 373 (old exit 94) - Campbell Station Rd: 3.8 - 89.6
EXIT 374 (old exit 95) - TN 131: 1.7 - 91.3
EXIT 376 - I-140 (exit 1C), TN 162: 1.4 - 92.7
EXIT 378 (old exit 97) - Cedar Bluff Rd: 1.8 - 94.5
EXIT 379 - Bridgewater Rd: 1.3 - 95.8
EXIT 379 - Gallaher View Rd: 0.6 - 96.4
EXIT 380 - Montuve Rd: 0.9 - 97.3
EXIT 383 - Weisgarter Rd: 2.0 - 99.3
EXIT 383 - TN 332: 0.5 - 99.8
I-40 EB (exit 385), I-640 Begin: 2.0 - 101.8
EXIT 1 - TN 62: 1.3 - 103.1
(old exit 19) I-640 EB (exit 3): 2.2 - 105.3
EXIT 108 (old exit 20) - Merchant Dr: 1.1 - 106.4
EXIT 110 (old exit 21) - Callahan Dr: 1.7 - 108.1
EXIT 112 (old exit 22) - TN 131: 1.7 - 109.8
EXIT 117 (old exit 23) - TN 170: 4.8 - 114.6
Anderson-Knox Line: 0.7 - 115.3
EXIT 122 (old exit 24) - TN 61: 4.7 - 120.0
EXIT 128 (old exit 25) - US 441, TN 71: 5.9 - 125.9
EXIT 129 (old exit 26) - US 25W SB, TN 9 SB, TN 116: 0.7 - 126.6
Campbell-Anderson Line: 0.9 - 127.5
EXIT 134 (old exit 27) - US 25W NB, TN 9 NB, TN 63 EB: 4.8 - 132.3
EXIT 141 (old exit 28) - TN 63 WB: 6.4 - 138.7
EXIT 144 (old exit 29) - Stinking Creek Rd: 3.5 - 142.2
EXIT 156 - Rarity Mountain Rd: 11.4 - 153.6
EXIT 160 (old exit 30) - US 25W, TN 9: 4.5 - 158.1
KY STATE LINE: 1.0 - 159.1
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Creation: Appeared in 1939 as part of the long-term national
planning leading to the Interstate system. Was numbered as I-75 in August,
1957.
Note: Opening dates for most of the information below come from Wikipedia, which references newspaper articles.
Adjustments: The first segments of I-75 to open were from before the interstate system, in Chattanooga roughly between today's Exit 7 and Exit 11 and in Knoxville on the Magnolia St Expwy between Unaka St and today's I-275.
In Oct 1960, I-75 opened between I-40 and Baxter Ave in Knoxville
In May 1961, I-75 opened between US 41-76 and I-24.
In Dec 1961, I-75 opened from its I-40 split near Lenoir City to Liberty St in downtown Knoxville.
In Jan 1962, I-75 opened from Baxter Ave to I-640 in Knoxville
In Dec 1962, I-75 opened from I-24 to today's TN 320.
By 1963, I-75 was opened between US 25W Jellico and Kentucky; also Georgia to US 41-76.
In July 1963, I-75 opened from TN 320 to today's Exit 7.
In Dec 1963, I-75 opened between now-US 321 and I-40.
In Oct 1964, I-75 opened on its US 25W overlay between Lake City (now Rocky Top) and Caryville.
In Dec 1964, I-75 opened from Liberty St and Unaka St in Knoxville.
In Oct 1966, I-75 opened from US 11-64 Ooltewah to TN 60 Cleveland.
In Oct 1968, I-75 opened from US 25W Caryville to US 25W Jellico.
In Sept 1970, I-75 opened between US 441 and US 25W Lake City.
In Dec 1970, I-75 opened between I-640 and now-TN 131.
In Aug 1972, I-75 opened from TN 131 to TN 61 Clinton.
In Jan 1973, I-75 opened between TN 60 Cleveland and now-TN 308 Charleston.
In Aug 1973, I-75 opened between TN 61 Clinton and US 441 Lake City.
I-75 open US 25W Jellico to Kentucky
I-75 open TN 95 to Knoxville
1964 Official
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I-75 open US 25W Jellico to US 25W Lake City
I-75 open today's TN 131 to Knoxville
1971 Official
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I-75 fully open Knoxville to Kentucky
1975 RMcN
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In Dec 1973, I-75 opened between TN 308 Charleston and TN 30 Athens.
In Dec 1974, I-75 opened between TN 30 Athens and US 321 Lenoir City, completing I-75 in Tennessee.
I-75 open in the Ooltewah area
1961 RMcN
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I-75 open in Chattanooga area
1964 Official
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I-75 open in Chattanooga area
1971 Official
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I-75 fully open Cleveland to I-40
1975 RMcN
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In December 1979 Tennessee requested that I-275 replace I-75 from I-40 in downtown Knoxville out to I-640, where the rerouted I-75 would be. The request was meant to coincide with the completion of the western leg of I-640. AASHTO approved this in June 1980.
I-75 open from downtown to US 25W
1961 RMcN
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I-75 moves to I-640
1980 Knox County
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Improvements: 4-laned throughout upon completion.
When I-75 was placed on I-640 in 1980, that segment was 6 lanes. It appears by then I-75 was also 6 lanes from I-640 to Merchant Dr.
In 1985, I-75 was 6-laned on its entire I-40 overlay
Between 1986-93, I-75 was 6-laned from Georgia to US 41-76; 8-laned from US 41-76 to I-24.
Between 1986-97, I-75 NB was given a truck climbing lane between MM 14.5 and MM 16.2
About 1993, I-75 was 8-laned from I-24 to TN 320
Between 1993-97, I-40/75 was 8-laned between TN 162 and Exit 379
Between 2000-02, I-75 was 8-laned from TN 320 to Shallowford Rd
Between 1998-2002, I-75 was 6-laned from Merchant Dr. to TN 131
Between 2003-06, I-40/75 was 8-laned between TN 131 and TN 162; also from Exit 379 to Exit 380
Between 2003-06, I-40/75 was 10-laned between Exit 380 and I-640
About 2007, I-75 was 8-laned from Shallowford Dr to Volkswagen Dr
In 2010-11, I-75 was 8-laned from Volkswagen Dr to US 11-64, Exit 11
In 2010-11, I-75 was 6-laned from US 11-64 Exit 11 to the truck parking area at MM 12.6
In 2020-21, I-75 was 10-laned from US 41-76 to I-24.
In 2023, a climbing lane was added to I-75 NB for 4 miles on its TN 63 overlay.
New Exits Added: US 129, 1966 (no longer along I-75's routing)
TN 162, 1972
Watt Rd, late 1970s
Hamilton Place Blvd, 1987
Paul Huff Pkwy, 1987
I-140, 1996
Bridgewater Rd and Gallaher Hill Rd half-interchanges, 1999
Rarity Mountain Rd, 2005
TN 317 EB, 2006
Weisgarter Rd, 2006
Comment: The construction of I-140 prompted the removal of the interchange at Mabry Hood Rd
The Bridgewater Rd and Gallaher Hill Rd half-interchanges project resulted in the removal of a direct diamond interchange with Walker Springs Rd.
The Unaka St interchange at original west end of the Magnolia St Expwy appears to have been removed in the early 1970s
The area around the Hiawasse River is notorious for thick fog and accidents.
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