Interstate 64 in Missouri

Interstate 64
Route information
Maintained by MoDOT
Length:	40.6 mi[1] (65.3 km)
Existed:	1956 – present
Major junctions
West end:	I-70 / US 40 / US 61 in Wentzville
	Route 364 in Lake St. Louis I-270 in Town and Country US 61 / US 67 in Frontenac I-170 in Richmond Heights I-55 / I-44 in St. Louis
East end:	I-55 / I-64 / US 40 in St. Louis
Location
Counties:	St. Charles, St. Louis, City of St. Louis
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Missouri State Highway System Interstate US State Supplemental ← US 63 Route 64 →

Interstate 64 (I-64) passes through in the St. Louis area in the U.S. state of Missouri. The entire route overlaps U.S. Route 40 (US 40). Because the road was a main thoroughfare in the St. Louis area before the development of the Interstate Highway System, it is not uncommon for locals to refer to the stretch of highway as "Highway 40" rather than "I-64". On December 6, 2009, the portion of the highway running through the city of St. Louis was named the Jack Buck Memorial Highway in honor of the late sportscaster.^[2]

Route description

I-64 begins at an interchange with Interstate 70, U.S. Routes 40 and 61 in St. Charles County and heads south. Previously, the freeway was a divided highway signed only as U.S. 40 with at-grade intersections, which were slowly converted to limited-access exits. The final intersection at Callahan Road was removed on October 14, 2009.^[3] The next major exit is for Route N and the western terminus of Missouri Route 364. Route 364 was completed and opened on November 2, 2014.^[4] From here, I-64 continues past interchanges with Winghaven Boulevard / Route DD, Route 94 and Research Park Circle, and then crosses the Missouri River via the Daniel Boone Bridge and enters St. Louis County.

The freeway travels through the congested Chesterfield Valley, where it gains a fourth lane and then meets Interstate 270 at a flyover interchange built in the early 1990s in the city of Town and Country. Continuing east, I-64 remains four lanes and travels through the affluent areas of Frontenac and Ladue. The next major interchange is Interstate 170 in the city of Richmond Heights. This stretch, located between Ballas Road and I-170, was closed in 2008 for a complete reconstruction, at which point substandard exits were upgraded and the fourth lane was added. The interchange with I-170 was also overhauled, creating a full interchange with high speed ramps in all directions. The reconstructed expressway opened to traffic on the morning of December 15, 2008.

East of the interchange with I-170, I-64 drops a lane and stays at three through lanes to Clayton Road. Through here, the expressway passes through older neighborhoods and enters into the city of St. Louis. After re-adding a fourth lane, the freeway skirts the southern edge of Forest Park. In this area, one finds both the St. Louis Science Center and St. Louis Zoo. Kingshighway marks the end of the completely reconstructed eastern half, where again outdated exits were updated and shoulders widened. The eastern half was closed from December 15, 2008 to December 7, 2009.^[5] I-64's speed limit drops from 60 to 55 miles per hour east of Kingshighway and drops a lane at Vandeventer Avenue (the opposite of the westbound lanes). Passing by St. Louis University, the freeway becomes double-decked for the first time (eastbound lanes at a lower level, westbound lanes an upper one), gaining back a fourth lane east of Compton Avenue. Another lane drop occurs at the Chestnut and 20th Street exit, where the cancelled Missouri Route 755 was to interchange. The freeway passes just south of the Scottrade Center and again becomes double-decked in the same arrangement, passing within 50 feet of the New Busch Stadium. The route becomes two lanes as it approaches the Mississippi River and the Poplar Street Bridge, where it is intersects Interstates 55 and 44 at an incomplete interchange. Eastbound I-64 cannot directly access either one of the other routes but westbound I-64, however, can directly access both. I-64 continues into Illinois concurrent with I-55.

History

Initial construction

Before the interstate highway system, US 40 was a main thoroughfare through St. Louis and Kansas City. From each state line, there were signs saying "Future I-55/I-64 Corridor" and "Future I-70 Corridor".

Reconstruction

In 2008, I-64/US 40 was closed in this area for a complete reconstruction between 2008 and 2009. Shown is the Spoede Road overpass above I-64. This overpass was demolished in June 2008.

The Missouri Department of Transportation rebuilt the stretch of I-64 from Spoede Road to Kingshighway Boulevard between 2008 and 2009. The project included new concrete pavement on the highway; approximately 25 rebuilt bridges; and several reconfigured interchanges, including a new freeway-to-freeway interchange at Interstate 170.

The section between Spoede Road and I-170 was closed for reconstruction on January 2, 2008 and opened to traffic on December 15, 2008. The section between I-170 and Kingshighway Boulevard was closed on December 15, 2008 and reopened to traffic on December 7, 2009.^[6] The project was completed with a dedication and opening day ceremony on Sunday, December 6.^[2]

Exit list

Former US 250;

County	Location	mi[1]	km	Exit[7]	Destinations	Notes
St. Charles	Wentzville	0.00	0.00	–	US 61 north – Hannibal	Western terminus of concurrency with US 61; National western end of I-64
				1	I-70 / US 40 west – Kansas City, St. Louis	Signed as exits 1A (west) and 1B (east); exit 210 on I-70
	Lake St. Louis	1.00	1.61		Prospect Road	Signed as exit 1C
		2.90	4.67	2	Lake St. Louis Boulevard – Lake St. Louis
		3.70	5.95	4A	Route N
		4.10	6.60	4B	Route 364 – Dardenne Prairie	Exits 1A-B on SR 364.
	O'Fallon	5.80	9.33	6	Route DD (Winghaven Boulevard)
		9.50	15.29	9	Route K – O'Fallon
	Weldon Spring	10.70	17.22	10	Route 94 – St. Charles	Eastbound exit is via exit 9
		11.50	18.51	11	Research Park Circle	No westbound entrance
Missouri River				Daniel Boone Bridge
St. Louis	Chesterfield	13.50	21.73	14	Chesterfield Airport Road	Eastbound exit and westbound entrance
		14.20	22.85		Spirit of Saint Louis Boulevard	Westbound exit and eastbound entrance
		16.20	26.07	16	Long Road	Westbound exit and eastbound entrance
		16.60	26.72	17	Boone's Crossing
		18.70	30.09	19A	Chesterfield Parkway
		19.10	30.74	19B	Route 340 (Olive Boulevard / Clarkson Road)
		20.50	32.99	20	Chesterfield Parkway	Westbound exit and eastbound entrance
		20.90	33.64	21	Timberlake Manor Parkway
	Town and Country	21.90	35.24	22	Route 141 (Woods Mill Road)
		23.20	37.34	23	Maryville Centre Road	No eastbound exit
		23.00	37.01	24	Mason Road
		25.30	40.72	25	I-270 – Chicago, Memphis	Exit 12 on I-270.
		26.00	41.84	26	Route JJ (Ballas Road)
	Frontenac	27.20	43.77	27	Spoede Road
		27.70	44.58	28A	US 61 south / US 67 (Lindbergh Boulevard)	Eastern terminus of concurrency with US 61
	Ladue	28.90	46.51	28B	Clayton Road	Westbound exit and eastbound entrance
		30.00	48.28	30	McKnight Road
	Richmond Heights	30.30	48.76	31A	I-170 north – Clayton, Lambert–St. Louis Airport	Exit 1 on I-170; southern terminus of I-170
		31.00	49.89	31B	Brentwood Boulevard / Hanley Road	Roads connected via one way collector road
		32.60	52.46	33A	Big Bend Boulevard
		33.00	53.11	33B	Bellevue Avenue	Eastbound exit; westbound entrance via collector road connected to exit 33A
City of St. Louis		33.00	53.11	33C	McCausland Avenue
		34.00	54.72	34A	Clayton Road / Skinker Boulevard	Westbound exit and eastbound entrance
		34.40	55.36	34B	Hampton Avenue – Forest Park, Saint Louis Zoo	Eastbound slip ramp exit to Oakland Avenue eastbound
		35.60	57.29	36A	Kingshighway Boulevard – Tower Grove Park
		36.50	58.74	36B	Boyle Avenue – Missouri Botanical Garden	Westbound exit and eastbound entrance
		36.70	59.06	36C	Vandeventer Avenue – Missouri Botanical Garden	Eastbound exit and westbound entrance
		37.50	60.35	37A	Market Street / Bernard Street	Eastbound exit and westbound entrance
		37.60	60.51	37B	Grand Boulevard	Eastbound exit and westbound entrance
		38.10	61.32	38A	Forest Park Avenue / Grand Boulevard — Forest Park, Washington University	Westbound exit and eastbound entrance
		38.30	61.64	38B	Market Street (3000 West)	Westbound exit and eastbound entrance
		38.40	61.80	38C	Jefferson Avenue	Eastbound exit and westbound entrance
		38.60	62.12	38D	Chestnut Street / 20th Street	Eastbound exit and westbound entrance
		38.90	62.60	39A	Market Street / 21st Street	Westbound exit and eastbound entrance
		39.20	63.09	39B	14th Street – Scottrade Center	Eastbound exit and westbound entrance
		39.50	63.57	39C	11th Street – Busch Stadium	Eastbound exit and westbound entrance
		39.80	64.05	40A	9th Street / Tucker Boulevard – Busch Stadium	Westbound exit only; eastbound entrance (via 6th Street)
		39.90	64.21	40B	6th Street	Eastbound exit and westbound entrance
		40.30	64.86	40C	I-55 south / I-44 west – Memphis, Tulsa	Western terminus of concurrency with I-55; westbound exit and eastbound entrance
		40.50	65.18	–	I-44 east to I-70 west – Kansas City	Westbound exit and eastbound entrance
Mississippi River		40.60	65.34	Poplar Street Bridge
				–	I-55 north / I-64 east / US 40 east to I-70 east – Illinois	Continuation into Illinois
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

See also

Missouri portal U.S. Roads portal

References

External links

Route map: Bing / Google

• Missouri Department of Transportation: The New I-64

Interstate 64
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