Interstate 75

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Interstate 75
Main route of the Interstate Highway System

Length:

1786.5 mi^[1] (2875.1 km)

South end:

SR 826 / SR 924 near Miami, FL^[2]

Major
junctions:

I-10 near Lake City, FL

I-20 in Atlanta, GA

I-40 in Knoxville, TN

I-70 near Dayton, OH

I-80 / I-90 near Toledo, OH

I-96 in Detroit, MI

North end:

Hwy 17 / TCH in Sault Ste. Marie, ON

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Interstate 75

Interstate 75 (abbreviated I-75) is a major north-south interstate highway in the midwest and southeastern United States. It travels from State Road 826 (Palmetto Expressway) and State Road 924 (Gratigny Parkway) in Hialeah, Florida (northwest of Miami) to Sault Ste. Marie, Michigan, at the Ontario, Canada border.

1 Route description
2 History
3 Major intersections
4 Auxiliary routes
5 References
6 External links

[edit] Route description

Lengths
	mi^[1]	km
FL	470.88	757.81
GA	355.11	571.49
TN	161.86	260.49
KY	191.78	308.64
OH	211.3	340.1
MI	395.54	636.56
Total	1786.5	2875.1

Major cities Bolded cities are officially-designated control cities for signs^[3]
Miami, Florida Naples, Florida Sarasota, Florida Tampa, Florida Ocala, Florida Gainesville, Florida Lake City, Florida Valdosta, Georgia Macon, Georgia Atlanta, Georgia Marietta, Georgia Chattanooga, Tennessee Cleveland, Tennessee Knoxville, Tennessee Lexington, Kentucky Cincinnati, Ohio Dayton, Ohio Toledo, Ohio Detroit, Michigan Flint, Michigan Saginaw, Michigan Mackinac Bridge (northbound, between it and Saginaw) St. Ignace, Michigan (southbound, between it and Sault Ste. Marie) Sault Ste. Marie, Michigan

[edit] Florida

Main article: Interstate 75 in Florida

Interstate 75 begins its northerly journey at an interchange with State Road 924 and State Road 826 in Hialeah, a suburb of Miami. After intersections with Interstate 595 and the Florida's Turnpike, the interstate leaves the Miami metropolitan area and turns westward to travel along Alligator Alley, which brings the freeway to the Gulf Coast and Naples, where it again heads north. Passing through Bonita Springs, Fort Myers, and Sarasota, Interstate 75 encounters a series of construction projects that will increase the lane count from two lanes in each direction to three. The freeway enters the Tampa Bay metropolitan area after an interchange with Interstate 275 northbound, which handles St. Petersburg-bound traffic. Within the Tampa metro are three more major junctions: One with the Lee Roy Selmon Crosstown Expressway which carries traffic into downtown Tampa, one with Interstate 4 which carries traffic across the center of the state to the East Coast, and another as Interstate 275 traffic defaults back onto northbound. The freeway proceeds to enter rural portions of Pasco, Hernando, and Sumter counties on its way to Ocala and Gainesville. At Lake City, transcontinental Interstate 10 meets Interstate 75, providing access to Tallahassee and Jacksonville; and a few miles later, the interstate exits the Sunshine State into southern Georgia.

[edit] Georgia

Main article: Interstate 75 in Georgia

Interstate 75 enters Georgia near Valdosta, and continues northward through the city of Tifton until it reaches Macon, where it intersects Interstate 16 eastbound for Savannah. For northbound traffic wishing to avoid potential congestion in Macon, Interstate 475 provides a relatively short bypass to the west of the city and Interstate 75's alignment. The freeway reaches no major junctions again until the Atlanta metropolitan area. The first metro freeway met is Interstate 675, which is quickly followed by the Atlanta bypass, Interstate 285. The road shares is multiplexed with Interstate 85 through the central business district of Atlanta. After the split, Interstate 75 beelines for Interstate 285 and the suburb of Marietta. North of Marietta, the final major junction in the Atlanta metro area is with Interstate 575. The freeway then traverses the rugged northwestern Georgia terrain as it heads towards Chattanooga, Tennessee.

[edit] Tennessee

Main article: Interstate 75 in Tennessee

The freeway enters Tennessee directly in the Chattanooga metropolitan area, where it intersects with Interstate 24. Exiting Chattanooga to the northeast, Interstate 75 does not meet any other highways until it is multiplexed with Interstate 40 and heads eastbound. Together, they enter the outskirts of Knoxville, where Interstate 75 multiplexes itself with a different road, this time Interstate 640, but only for a short time. When the two meet Interstate 275, Interstate 75 becomes its own freeway and heads north towards the Kentucky border.

[edit] Kentucky

Main article: Interstate 75 in Kentucky

Interstate 75 continues northbound in Kentucky without any major cities or junctions until reaching Lexington, where it briefly runs coterminiously with Interstate 64 before splitting off for Cincinnati, Ohio. Near Walton, Interstate 71 merges with Interstate 75, making for yet another multiplexed portion of freeway. Interstate 275, which is the Cincinnati beltway, is then intersected by Interstate 71/75. After passing through Covington, the freeway crosses the Ohio River via the lower level of the Brent Spence Bridge and continues into Cincinnati.

[edit] Ohio

Main article: Interstate 75 in Ohio

Immediately after entering Cincinnati, Interstate 71 separates from Interstate 75, taking a more easterly routing through the city, while Interstate 75 remains generally northbound throughout the metropolitan area. Interstate 74 westbound, Ohio State Road 562 eastbound, and Ohio State Road 126 all intersect the freeway as it makes its way northward. In the Arlington Heights neighborhood of Cincinnati, Interstate 75 sees a carriageway split for a few miles. After another interchange with the Interstate 275 beltway, the freeway leaves the metropolitan area and heads towards Dayton, where Interstate 675 and Interstate 70 have interchanges. After exiting Dayton, Interstate 75 makes its way northbound through Ohio -- managing to miss many of the state's major cities until Toledo, which is located very close to the Michigan border. Interstate 475 is met first in that city, and then the cross-country Interstate 90/Interstate 80 toll road duplex. Interstate 280 is the last major junction in Ohio; the freeway crosses into Michigan soon afterwards.

Mackinac Bridge

[edit] Michigan

Main article: Interstate 75 in Michigan

Interstate 75 hugs the western shore of Lake Erie upon entering Michigan -- until about Monroe, when it heads westward and prepares to enter Detroit and its surrounding suburbs. Yet another Interstate 275 is met as the freeway goes deeper into the Detroit metropolitan area, and no other major junctions are present until downtown. Once downtown, Interstate 75 meets the Ambassador Bridge to Windsor, Canada, Interstate 375 (Chrysler Freeway), Interstate 94, and M-8 (Davison Freeway). Interstate 696 also intersects I-75 in the northern metro area. When the freeway reaches Pontiac, there is a junction with M-59; and further north in Flint, the interstate meets Interstate 475 and Interstate 69. The freeway then heads north towards Saginaw, where Interstate 675 acts as a spur route into the city. Further north in Bay City, the major junction of US 10 exists, providing access to Midland as well as downtown Bay City. At Mackinaw City, I-75 crosses the Mackinac Bridge to reach the Upper Peninsula, where the road terminates at the Canadian border in Sault Ste. Marie.

[edit] History

This limited access highway that was planned in the 1950s roughly follows the general route of many older at grade highways, including U.S. Route 2, U.S. Route 27, U.S. Route 25, and U.S. Route 41, among others. Some of these older U.S. Routes (several of which are still in existence) in turn replaced the eastern route of the old Dixie Highway. The final stretch of Interstate 75 was completed in 1986 in Dade (present Miami-Dade) and Broward Counties in Florida, although the last stretch to receive the I-75 signage was a reconstructed Alligator Alley in 1993.

[edit] Major intersections

Interstate 75 ends at this interchange with State Road 826 (Florida).

I-75 co-signed with I-85 in downtown Atlanta

Florida's Turnpike (Homestead Extension) near Miami Lakes, Florida (northbound entrance and southbound exit)
Interstate 595 in Davie, Florida, serving Fort Lauderdale-Hollywood International Airport
Interstate 275 near Parrish, Florida
Florida State Road 60 near Brandon, Florida
Interstate 4 near Tampa, Florida
Interstate 275 near Lutz, Florida
Interstate 10 in Lake City, Florida
Interstate 475 around Macon, Georgia (twice).
Interstate 16 in Macon, Georgia (Map)
Interstate 675 near Stockbridge, Georgia
Interstate 285 outside Atlanta (loop around the city), on the southeast side in Clayton County and on the northwest side in Smyrna
Interstate 85 in Atlanta. They stay connected for several miles through downtown on a highway known as the Downtown Connector.
Interstate 20 in Atlanta
Interstate 24 in Chattanooga, Tennessee
Interstate 40 near Dixie Lee Junction, Tennessee. They stay connected until Knoxville, Tennessee.
Interstate 64 in Lexington, Kentucky. They stay connected for 6 miles (9.7 km) to the east of Lexington.
Interstate 71 in Walton, Kentucky. They stay connected until Cincinnati, Ohio.
Interstate 275 in Erlanger, Kentucky (loop around Cincinnati), and again in Sharonville, Ohio
Interstate 74 in Cincinnati
Interstate 675 in Miamisburg, Ohio (south of Dayton)
Interstate 70 in Vandalia, Ohio (near Dayton)
Interstate 80 / 90 (Ohio Turnpike) in Rossford, Ohio (near Toledo)
Interstate 475 in Toledo, Ohio
Interstate 280 in Toledo, Ohio
Interstate 275 in Newport, Michigan
Interstate 96 (Jeffries Freeway) in Detroit, Michigan
Interstate 375 in Detroit
Interstate 94 (Ford Freeway) in Detroit
Interstate 696 (Walter P. Reuther freeway) north of Detroit
Interstate 69 in Flint, Michigan
Interstate 475 in Flint
Interstate 675 in Saginaw, Michigan

[edit] Auxiliary routes

Tampa, Florida/St. Petersburg, Florida - I-175 (1.294 mi/2.08 km), I-275 (63.387 mi/102.01 km), I-375 (1.220 mi/1.96 km)
Macon, Georgia - I-475
Atlanta, Georgia - I-675
Spur to Nelson, Georgia, I-575
Knoxville, Tennessee - I-275
Cincinnati, Ohio - I-275
Dayton, Ohio - I-675
Toledo, Ohio - I-475
Detroit, Michigan - I-275, I-375
Flint, Michigan - I-475
Saginaw, Michigan - I-675

v • d • e Auxiliary routes of Interstate 75

Florida: 175 • 275 • 375 — Georgia: 475 • 575 • 675 — Tennessee: 175 (future) • 275 — Kentucky: 175 (future) — Ohio: 275 • 475 • 675 — Michigan: 275 • 375 • 475 • 675

[edit] References

^ ^a ^b Route Log and Finder List - Interstate System: Table 1. FHWA. Retrieved on 2007-10-02.
^ Federal Highway Administration, Dwight D. Eisenhower National System of Interstate and Defense Highways: Interstate System Facts, accessed February 2008: "I-75 Miami, FL to Sault Ste Marie, MI"
^ Wolf, Paul S., editor. "Interstate Highway Control Cities". As referenced by the North Carolina Department of Transportation, "Control Cities For Use In Guide Signs On Interstate Highways", August 9, 2004. Accessed on 2007-01-30.

2005 Rand McNally Road Atlas
FDOT GIS data and pavement management reports
Georgia Deartment of Transportation, Office of Transportation Data (2003). "Interstate Mileage Report (438 Report)".

[edit] External links

Interstate 75 at Michigan Highways
Interstate 75 on Cincinnati-Transit.net

edit Main Interstate Highways (multiples of 5 in pink)
4	5	8	10	12	15	16	17	19	20	22	24	25	26	27	29	30
35	37	39	40	43	44	45	49	55	57	59	64	65	66	68	69
70	71	72	73	74	75	76 (W)		76 (E)		77	78	79	80	81	82
83	84 (W)		84 (E)		85	86 (W)		86 (E)		87	88 (W)		88 (E)		89	90
91	93	94	95	96	97	99	(238)		H-1		H-2		H-3
Unsigned			A-1		A-2		A-3		A-4		PRI-1		PRI-2		PRI-3
Lists		Primary			Main - Intrastate - Suffixed - Future - Gaps
		Auxiliary			Main - Future - Unsigned
		Other			Standards - Business - Bypassed