Interstate 75

Interstate 75 is an interstate highway in the midwest and southeastern United States. It goes from Florida State Highway 826 (Palmetto Expressway) at Hialeah, Florida near Miami to Sault Ste. Marie, Michigan at the Ontario, Canada border.

Lane configurations

Michigan

• between northern terminus and south end of Grayling Business I-75 loop (2 lanes on each side)
• between south end of Grayling's BUS I-75 and U.S. Highway 127 (formerly U.S. Highway 27) (3 lanes southbound, 2 lanes northbound)
• between US 127 and Exit 164 (M-13 Connector) (2 lanes on each side)
• between Exit 164 and Exit 162 (U.S. Highway 10) (4 lanes each way)
• between US 10 and Exit 130 (M-57) (3 lanes on each side)
• between M-57 and north end of I-475 (Exit 126) (4 lanes each way)
• between the northern I-475 interchange (126) and US 23 (Exit 117) (3 lanes each way)
• between US-23 and southern end of I-475 (2 lanes on each side)
• between I-475 and Pontiac (3 lanes on each side)
• between Pontiac and Exit 75 (Square Lake Rd.) (4 lanes each way)
• between Exit 75 and Exit 59 (Eight Mile Rd.) (3 lanes each way)
• from Exit 59 to I-375 (4 lanes each way)
• through I-375 interchange (2 lanes each way around ramps)
• from I-375 to I-96 (4 lanes each way)
• through I-96 interchange (2 lanes each way)
• from I-96 to Exit 43 (M-85/Fort St.) (4 lanes each way)
• from Exit 43 to Ohio line (3 lanes each way)

Ohio

• between Michigan line and I-280 (3 lanes on each side)
• between I-280 (Exit 208) and I-475 (Exit 204) (2 lanes each way)
• From I-475 (Exit 204) to downtown exits (202A/B) (4 lanes each way)
• From downtown exits (202A/B) to SR 25 (Exit 201B) (2 lanes each way)
• From SR 25 (Exit 201B) to I-475 (Exit 192) (3 lanes each way)
• From I-475 (Exit 192) to milepost 78 near Piqua (2 lanes each way)
• From milepost 78 to SR 4 interchange in Dayton (3 lanes each way)
• Through SR 4 interchange (2 lanes each way)
• From SR 4 to US 35 (mostly 3 lanes each way)
• From US 35 to I-71/US 50 interchange in Cincinnati (3 lanes each way)
• Between I-71 off- and on-ramps (2 lanes each way)
• Brent Spence Bridge over Ohio River (4 lanes each way, SB lanes above NB lanes)

Kentucky

• Brent Spence Bridge over Ohio River (4 lanes each way, SB lanes above NB lanes)
• From 5th St. exit in Covington (192) to I-275 (185) (4 SB, 3 NB)
• Through I-275 interchange (3 lanes each way)
• From I-275 (exit 185) to I-71 split (exit 173) (4 lanes each way)
• From I-71 split (exit 173) to milepost 156 near Dry Ridge (3 lanes each way)
• From milepost 156 to milepost 139 near Corinth (2 lanes each way)
• From milepost 139 to milepost 70 south of Berea (3 lanes each way)
• From milepost 70 to milepost 56 (2 lanes each way)
• From milepost 52 to milepost 56 (4 NB - extra climbing lane, 3 SB)
• From milepost 52 to milepost 42 north of London (2 lanes each way)
• From milepost 42 to milepost 31 north of Corbin (3 thru lanes each way, auxiliary lanes for exits here and there)
• From milepost 31 to Tennessee line (2 lanes each way)

Tennessee

• 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 multiplex (3 to 4 lanes each way)
• from I-40/I-640 western split to I-40 milepost 378 (3 lanes each way, being widened as of July 2005)
• from milepost 378 to I-140 (Exit 376) (4 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 (SSR 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 thru lanes each way, auxiliary lane SB for US 41 exit)

Georgia

• from Tennessee line to Exit 269 (Barrett Pkwy./Kennesaw) (3 lanes each way, a few climbing lanes on longer hills)
• from Exit 269 to I-575 (Exit 268) (4 lanes each way)
• from I-575 to I-285 (Exit 259) (5-7 lanes each way, more closer to 285, with 9 NB lanes very briefly just north of 285)
• from I-285 to I-85 (3 lanes each way)
• "Downtown Connector" (at least 4 lanes each way)
• not sure from I-20 south to I-285
• from I-285 (Exit 238) to just before I-675 (Exit 227) (4 lanes each way)
• from I-675 to northern city limits of Forsyth (3 lanes each way)
• within Forsyth (4 lanes each way)
• from southern city limits of Forsyth to Exit 177 (I-475) (4 NB, 3 SB)
• from I-475 to I-16 (Exit 165) (2 lanes each way)
• from I-16 to I-475 (Exit 156) (3 lanes each way)
• from I-475 to milepost 103 near Cordele (3 lanes each way)
• from milepost 103 to milepost 64 just north of Tifton (currently mostly 2 lanes each way, undergoing widening)
• within city limits of Tifton (3 lanes each way)
• from southern city limits of Tifton to milepost 19 near Valdosta (mostly 2 lanes currently, also undergoing widening)
• from milepost 19 to Florida line (3 lanes each way)

Florida

• between Georgia line and Exit 329 (FL Turnpike) (3 lanes on each side)
• between Turnpike and I-4 (Exit 260) (2 lanes each way)
• between I-4 and milepost 201 near Sarasota (3-4 lanes each way, more further north)
• between milepost 201 and I-595 (Exit 19) (2 lanes each way)
• from I-595 to southern terminus (5 lanes each way)