List of Houston highways

Interstate 10 - Interstate 45 interchange northwest of downtown Houston.

This is a list of highways in the Houston–Sugar Land–Baytown metropolitan area.

Freeways

Present

Designation	Common Name	Year of First Freeway Section	Maximum width: mainlanes (HOV)	Maximum Traffic Count, 2001 (AADT)	Maximum Traffic Count, 2007 (AADT)	Maximum Traffic Count, 2008 (AADT)	Maximum Traffic Count, 2009 (AADT)[3]
I-10	Baytown-East Freeway	1953	8	225,640	197,000	193,000	195,000
	Katy Freeway	1956	16(2)	238,520	246,000	276,000	268,000
I-45	Gulf Freeway	1948	8(1)	269,570	291,000	263,000	266,000
	North Freeway	1959	10(1)	291,470	326,000	335,000	317,000
I-610	610 Loop	1952	10	293,460	263,000	279,000	288,000
Sam Houston Tollway	Sam Houston Tollway	1982	9	202,900	197,000	197,000	189,000
Fort Bend Toll Road	Fort Bend Parkway	2004	4
Hardy Toll Road	Hardy Toll Road	1987	6	59,220	67,000	64,000	61,000
Westpark Tollway	Westpark Tollway	2004	4
US 59	Eastex Freeway	1953	10(1)	211,860	228,000	208,000	195,000
	Southwest Freeway	1961	12(1)	379,550	337,000	330,000	329,000
US 90	Crosby Freeway	1991	6	31,090	32,000	32,000	46,000
US 290	Northwest Freeway	1975	8(1)	262,970	258,000	238,000	230,000
Spur 5	Spur 5	1988	6	54,240	36,000	37,000	37,000
Spur 330	Decker Drive	2001	6	32,890	44,000	45,000	37,000
Spur 527	The Downtown Split	1961	6*	93,410	62,000	61,000	64,000
SH 99	Grand Parkway	1994	4	36,200	61,000	65,000	68,000
SH 146	Baytown Freeway	1996	8	74,670	67,000	70,000	73,000
SH 225	Pasadena Freeway	1966	8	152,780	129,000	131,000	133,000
SH 249	Tomball Parkway	1990	8	119,780	145,000	142,000	142,000
SH 288	South Freeway	1980	8	178,490	174,000	175,000	172,000
FM 1764	Emmett F. Lowry Expressway		4	48,050	40,000	39,000	40,000

Under construction

• SH 99 - Parts of Section I-2 of the Grand Parkway are under construction.

Future

• Red Bluff Freeway - planned from State Highway 146 southeast of Houston to Beltway 8. Only frontage roads have been built.
• SH 99 - Sections A, B, C, E, F1, F2, G, H, and I-1 of Grand Parkway are in various stages of the planning process.
• SH 35- Spur 5 - south-southeast of downtown. The mainlanes planned to be built from its present terminus near University Drive (adjacent to the University of Houston) to south of Beltway 8.
• Fort Bend Toll Road- The Fort Bend Parkway Toll Road is planned to eventually be extended from its northern terminus at US 90A to the southwest corner of the 610 Loop.
• Hardy Toll Road - The Hardy Toll Road is planned to be extended from its southern terminus at the North Loop to Downtown Houston. Construction should be completed sometime during 2011.
• Fort Bend Westpark Tollway - The Fort Bend section of the Westpark Tollway will eventually be extended west to the growing suburb of Fulshear. It will then turn north and end at IH-10 around Pederson Road.^{[citation needed]}

Limited-access highways

Present

• Allen Parkway - Between I-45 and Shepherd Drive, a distance of 2.3 miles (3.7 km), Allen Parkway is a limited access parkway.
• Grand Parkway - Parts of section D (south of the Westpark Tollway) are not up to full freeway standards but will be in the future.
• Memorial Drive - From Houston Street to just west of Shepherd Drive, a distance of 2.3 miles (3.7 km), Memorial Drive is a limited-access parkway with exits at Heights Blvd./Waugh Drive and Shepherd Drive.
• U.S. Highway 90 Alternate — South Main Street — south-southwest of downtown from I-610 to near the Southwest Freeway.

Future

• I-69 - (Interstate 69) will eventually go through Houston on the same route as US 59. US 59 will then be renamed through Houston.^{[citation needed]}