Interstate 670 (Kansas–Missouri)

Interstate 670 (I-670) is a 2.81-mile-long (4.52 km) connector highway between I-70 in Kansas City, Kansas, and I-70 in Kansas City, Missouri. The highway provides a more direct route through Downtown Kansas City than the older mainline I-70 and avoids the sharp turn (and reduced speed limit) of the latter at the west end of the Intercity Viaduct. I-670 also makes up the south side of Kansas City's Downtown Loop, where it passes under the southern half of the Kansas City Convention Center.

Interstate 670 marker

Interstate 670

Jay B. Dillingham Freeway
I-670 highlighted in red
Route information
Auxiliary route of I-70
Length2.81 mi[1] (4.52 km)
Existed1968–present
NHSEntire route
Major junctions
West end I-70 / US-24 / US-40 / US-69 / US-169 in Kansas City, KS
Major intersections I-35 in Kansas City, MO
East end I-70 / US 24 / US 40 / US 71 in Kansas City, MO
Location
CountryUnited States
StatesKansas, Missouri
CountiesKS: Wyandotte
MO: Jackson
Highway system
  • Kansas State Highway System
← I-635KS→ K-1
← I-635MO→ Route 740

The road crosses the Kansas River and the West Bottoms, the former location of the Kansas City Stockyards, on the I-670 Viaduct. The leg of the highway west of I-35 is known as the Jay B. Dillingham Freeway.[2] Jay B. Dillingham was a former president of the Stockyards.

Route description
Looking westbound on I-670 passing below the Kansas City Convention Center at night

I-670 begins in Kansas City, Kansas, as ramps from I-70/U.S. Route 24 (US 24)/US 40/US 169 meet to form the freeway just before a bridge over the Kansas River, which is located just south of its confluence with the Missouri River. The freeway then crosses the Kansas–Missouri state line and enters Kansas City, Missouri. The road then has an interchange with I-35 just before passing beneath the Kansas City Convention Center. The freeway passes just to the south of the Kansas City Power & Light District and T-Mobile Center in Downtown Kansas City. It meets up with I-70/US 40 again on the southeastern corner of the downtown area; US 71 comprises the north–south portion of the interchange.[3] In Missouri, I-670 is signed as an alternate route to I-70.[4]

History

The freeway was not part of the original planned freeways around Kansas City in 1955.[5][6] The section east of the I-35 interchange was built first and finished in 1968.[7][8] The western portion was not planned until 1971 and was not finished until several years later.[9][10] By 1987, the freeway was extended slightly westward in the Downtown Kansas City area[11][12] but was not fully extended to I-70 until 1991, when it was fully opened.[13][14]

On May 20, 1997, sections of I-670 and I-35 in Downtown Kansas City were closed for the filming of a music video for the U2 song "Last Night on Earth". The closure, which was criticized by a local American Automobile Association official, caused some traffic congestion and was the subject of 50–60 complaints to the city government.[15][16]

Exit list
StateCountyLocationmikmExitDestinationsNotes
KansasWyandotteKansas City0.000.00

 I-70 / US-24 / US-40 west / US-69 south – Topeka		I-70 exit 421B
0.390.631ACentral AvenueWestbound exit and eastbound entrance
0.47–
0.56		0.76–
0.90		Kansas River bridge
 0.83
0.00		1.34
0.00		Kansas–Missouri state line
MissouriJacksonKansas City0.13–
0.19		0.21–
0.31		1BGenesee Street / Wyoming Street
0.881.422T
 I-35 south – Wichita		I-35 exit 2U

 I-35 north / 12th Street		Westbound exit and eastbound entrance; I-35 exit 2U
1.021.642SBroadwayWestbound exit and eastbound entrance. Access to Kansas City Convention Center and Kauffman Center for the Performing Arts.
1.101.772RCentral StreetEastbound exit only; access to Downtown, Kansas City Convention Center, Kauffman Center for the Performing Arts, Power and Light District, and T-Mobile Center.
1.422.292QTruman Road / Locust Street / Oak Street / Grand Boulevard / Walnut Street / Main Street / Baltimore AvenueWestbound exit and eastbound entrance. Access to Power and Light District and T-Mobile Center.
2.103.382P 13th Street / 14th Street / Charlotte Street / Holmes StreetWestbound exit and eastbound entrance only. Access to Downtown Kansas City, UMKC Medical School, and Truman Medical Center-Hospital Hill.
2N




 I-70 west / US 71 north to I-29 / I-35 north – St. Joseph, Des Moines		Eastbound exit and westbound entrance; I-70 exit 2L
2M
US 71 south – Springfield		Eastbound exit and westbound entrance. Access to UMKC Medical School, and Truman Medical Center-Hospital Hill.
2K12th Street / 11th Street to Charlotte Street / 10th Street / Harrison Street / Troost AvenueWestbound exit and eastbound entrance
3AThe PaseoEastbound exit and entrance and westbound exit only. Access to the American Jazz Museum and the Negro Leagues Baseball Museum.

 I-70 / US 24 east / US 40 – St. Louis		I-70 exit 2L
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References
  1. Staff (October 31, 2001). "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. Retrieved May 28, 2012.
  2. Google (June 8, 2009). "Interstate 670 (Kansas–Missouri)" (Map). Google Maps. Google. Retrieved June 8, 2009.
  3. Google (July 30, 2021). "Interstate 670 (Kansas–Missouri)" (Map). Google Maps. Google. Retrieved July 30, 2021.
  4. Alternate I-70 (Road sign). Over I-670 in Kansas City. July 2019. Retrieved August 3, 2021 – via Google Maps.{{cite sign}}: CS1 maint: location (link)
  5. General Location of National System of Interstate Highways Including All Additional Routes at Urban Areas (Map). Bureau of Public Roads. September 1955. Kansas City, Missouri inset. Retrieved May 28, 2012.
  6. "KC Freeway History". The Line Creek Loudmouth. December 8, 2016. Retrieved March 3, 2022.
  7. Missouri State Highway Map (PDF) (Map). Missouri Department of Transportation. 1968. Retrieved February 27, 2011.
  8. Kansas State Highway Map (Map). Kansas Department of Transportation. 1968. Retrieved February 27, 2011.
  9. Missouri State Highway Map (PDF) (Map). Missouri Department of Transportation. 1971. Retrieved February 27, 2011.
  10. Kansas State Highway Map (Map). Kansas Department of Transportation. 1971. Retrieved February 27, 2011.
  11. Missouri State Highway Map (PDF) (Map) (1987–88 ed.). Missouri Department of Transportation. 1987. Retrieved February 26, 2011.
  12. Kansas State Highway Map (Map). Kansas Department of Transportation. 1987. Retrieved February 27, 2011.
  13. Missouri State Highway Map (PDF) (Map) (1991–92 ed.). Missouri Department of Transportation. 1991. Retrieved February 27, 2011.
  14. Kansas State Highway Map (Map) (1991–92 ed.). Kansas Department of Transportation. 1991. Retrieved February 27, 2011.
  15. Heider, Timothy (May 20, 1997). "U2: Last night they rocked...but today you don't roll; Downtown commuters face delays while band makes a video on I-670". The Kansas City Star. p. A1.
  16. White, Tanika; Lester, Chris (May 21, 1997). "Making of video makes a big mess". The Kansas City Star. p. A1.
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