Interstate 45

I-45
I-45
	I-45 highlighted in red
Route information
Length	284.913 mi (458.523 km)
Existed	1971–present
NHS	Entire route
Major junctions
South end	SH 87 in Galveston
	Sam Houston Tollway / Beltway 8 in Houston; I-610 (South Loop) / SH 35 / SH 225 in Houston; I-69 / US 59 / SH 288 in Houston; I-10 / US 90 in Houston; I-610 (North Loop) in Houston; SH 99 Toll in Houston, TX; Hardy Toll Road in Spring; US 190 in Huntsville; I-20 in Dallas; US 175 in Dallas;
North end	I-30 / I-345 / US 75 in Dallas
Location
Country	United States
State	Texas
Counties	Galveston, Harris, Montgomery, Walker, Madison, Leon, Freestone, Navarro, Ellis, Dallas
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; Highways in Texas; Interstate; US; State; Toll; Loops; Spurs; FM/RM; Park; Rec;

Interstate 45 is an Interstate Highway in the state of Texas in the United States. It goes from Galveston north to Dallas. The route is 284.913 miles (458.523 km) long.^[1]