Interstate 635 (Texas)

Interstate 635
Interstate 635
Lyndon B. Johnson Freeway
	I-635 highlighted in red
Route information
	Auxiliary route of I-35
	Maintained by TxDOT
Length	37 mi (60 km)
Existed	October 1, 1959–present
NHS	Entire route
Major junctions
South end	I-20 in Balch Springs
	US 80 in Mesquite; I-30 in Mesquite; US 75 in Dallas; Dallas North Tollway on the Dallas-Farmers Branch city line; I-35E in Dallas; Pres. George Bush Turnpike in Irving;
West end	SH 121 / International Parkway near DFW Airport
Location
Country	United States
State	Texas
Counties	Dallas, Tarrant
Highway system
	Interstate Highway System; Main; Auxiliary; Suffixed; Business; Future; Highways in Texas; Interstate; US; State Former; ; Toll; Loops; Spurs; FM/RM; Park; Rec;

Interstate 635 (I-635) is a 37-mile-long (60 km) partial loop around Dallas, Texas, in the United States between I-20 in Balch Springs and SH 121 at the north entrance of the DFW Airport in Grapevine. It intersects I-35E at exits 27B and 27C but does not connect with I-35W. I-635 and a part of I-20 are collectively designated as the Lyndon B. Johnson Freeway; known locally as the LBJ Freeway, or simply LBJ. The roadway is named after Lyndon B. Johnson, the former U.S. senator from Texas and the 37th vice-president and 36th president of the U.S. Where I-635 ends at I-20, I-20 continues the LBJ Freeway designation heading west. Since the portion of I-20 between Spur 408 to I-635 retains the same names as I-635, the two highways are considered three-quarters of the beltway around Dallas. Together with Spur 408, a portion of Loop 12, and a portion of I-35E, I-635 and I-20 complete the beltway.