List of highways in Harris County, Texas

Harris County's location within the state of Texas
System information
Length:	1,212.797 mi (1,951.808 km)
Highway names
Interstates:	Interstate X (I-X) Interstate Highway X (IH-X)
US Routes:	U.S. Highway X (US X)
State:	State Highway X (SH X)
Loops:	Loop X
Spurs:	Spur X
Other roads:	Park Road X (PR X) Farm-to-Market Road X (FM X) Ranch-to-Market Road X (RM X)
System links
Highways in Texas Interstate US State Toll Loops Spurs Park Rec FM

The state highways in Harris County, Texas consists of approximately 1,213 miles (1,952 km) of routes in the Texas state highway system that are located within Harris County.^[1] These highways are maintained by the Texas Department of Transportation (TxDOT). These highways are made up of Interstate Highways, U.S. Highways, State Highways, State Loop and Spur Highways, Farm to Market Roads, Park Highways, and Alternate and Business Routes. In addition to these highways, three independent Toll Roads and a section of Interstate 10 that is toll managed are also located in Harris County. These roads are maintained by the Harris County Toll Road Authority, and add approximately 120 miles (190 km) of highways to the overall Harris County highway system.^[2]

There are currently four interstates located within Harris County. They consist of three major interstates (Interstate 10 (I-10), known as the Katy Freeway and East Freeway, Interstate 45 (I-45), known as the Gulf Freeway and North Freeway, and Interstate 69 (I-69), known as the Southwest Freeway and the Eastex Freeway) and one Auxiliary Interstate (Interstate 610 (I-610), known as "The Loop"). There are also three U.S. Routes located in Harris County. These highways consist of U.S. Route 59 (US 59, known as the Southwest Freeway and the Eastex Freeway), U.S. Route 90 (US 90, known as the Cosby Freeway), and U.S. Route 290 (US 290, known as the Northwest Freeway). There are nine state highways, eight spur and loop highways, one park highway, four toll roads (three independent), twenty-two farm to market roads, four bannered U.S. routes, two bannered state routes, and one bannered farm to market road.

Highways

Interstate Highways and U.S. Highways

The short concurrency between I-10 and I-45

There are currently four interstate highways located in Harris County. Three of these are I-10, which runs west-east, I-45, which runs south-north, and I-610, which forms a small loop around Downtown Houston.^[3][4] I-10 and I-45 run concurrently with each other for a short distance in Downtown Houston. All three highways were established in 1959, with the creation of the Interstate Highway System.^[5][6][7] The fourth interstate, Interstate 69, runs concurrently with US 59 from both the 610 North Loop to the Montgomery-Liberty county line and from Rosenberg to the 610 West Loop, they were designated and signed in 2012. US 59 inside the 610 loop was co-designated and co-signed as I-69 in 2015. Once fully complete the mainline of I-69 will run from Brownsville, TX to Port Huron, MI.

In addition to the four interstate highways, there are also three U.S. Routes. These highways are US 59, which forms the Southwest and Eastex Freeways, and runs southwest-northeast, US 90, which runs concurrently with I-10 from the west county border to I-610, where it becomes the Cosby Freeway, running in a west-east direction, and US 290, which forms the Northwest Freeway, running southeast-northwest.^[8][9]

State Highways, Loops, Spurs, and Park Roads

State Beltway 8

There are currently nine state highways located in Harris County. The longest of these is Texas State Highway 6, which stretches approximately 36.8 miles (59.2 km) from the Fort Bend County line to the Waller County line.^[8][9][10] The shortest of these is Texas State Highway 35, which stretches approximately 6 miles (9.7 km) from the Fort Bend County line to Interstate 45 in south Houston.^[11] NASA Road 1 is also located in Harris County, and is one of just two state highways in Texas that is not numbered. The other highway is State Highway OSR.^[12]

There are currently only one loop highway in Harris County, Texas State Loop 494, which has its south end at I-69 just south of the Harris-Montgomery county line, and Beltway 8, the state's only highway designated as a beltway, forms a large loop around most of Houston.^[13] There are six spur routes located in Harris County. The longest is Texas State Highway Spur 261, at 4.6 miles (7.4 km) long.^[14] The shortest spur is Texas State Highway Spur 330, at 0.8 miles (1.3 km).^[15] There is currently one park road located in Harris County, Texas Park Road 1836.^[16] Park Road 1836 serves the San Jacinto Battleground State Historic Site and Battleship Texas. The highway is numbered 1836 to commemorate Texas's year of independence.^[17] Park Road 1836 is 7.234 miles (11.642 km) long.^[17]

Farm to Market Roads

There are currently twenty-two farm to market roads located in Harris County. Due to the heavy urbanization of Harris County, many of these FM's have been redesignated to Urban Roads under the TxDOT standards.^[18] The length of these Farm to Market Roads varies from approximately 37 miles (60 km) long (FM 1960) to just 0.2 miles (0.32 km) (FM 1092).^[19]

Toll Roads

A sign for the Beltway 8 Toll bridge

There are seven toll roads located in Harris County. Three of these toll roads are independent toll roads. These consist of the Hardy Toll Road, the Westpark Tollway, and the Fort Bend Toll Parkway. The other four toll roads are state-maintained highways that have been converted to toll highways. These are the Sam Houston Tollway (Beltway 8), the Tomball Tollway (Texas State Highway 249), the Katy Managed Lanes, which is a section of Interstate 10 located between Katy and downtown Houston, and the Grand Parkway (Texas State Highway 99) which is under construction.^[2] All toll roads are maintained by the Harris County Toll Road Authority, and are marked with a purple and yellow version of the county highway shield.^[2]

Interstate, U.S., and State Highways

Route Name	Direction	Termini	Junctions	Length[3][4]		Remarks	References
				mi	km
I-10	E–W	Chambers County to Fort Bend County	SH 146 Beltway 8 I-610 I-69/US 59 I-45 SH 6 SH 99	56	90	East of I-45 known locally as East Freeway; west of I-45 known locally as Katy Freeway	[5][8][16][20][21]
I-45	S–N	Galveston County to Montgomery County	NASA Road 1 Beltway 8 SH 3 I-610 I-69/US 59 I-10 SH 249	45	72	South of I-69/US 59 known locally as Gulf Freeway; portion between I-69/US 59 and I-10 known locally as Pierce Elevated; north of I-10 known locally as North Freeway	[6][8][9][22]
I-69	S-N	Fort Bend County to Montgomery County	Beltway 8 Westpark Tollway I-610 SH 288 I-45 I-10	34	55	Co-signed with US 59; south of SH 288 known locally as Southwest Freeway; north of SH 288 known locally as Eastex Freeway	[8][9][20][23]
I-610	Orbital	Officially designated from I-10 east of downtown Houston, going counterclockwise	US 90 Hardy Toll Road I-45 US 290 I-10 I-69/US 59 Alternate US 90 SH 288 SH 35 SH 225	37.972	61.110	Known locally as "The Loop"	[7][8][24]
US 59	S–N	Fort Bend County to Montgomery County	Beltway 8 Westpark Tollway I-610 SH 288 I-45 I-10	34	55	Co-signed with I-69; south of SH 288 known locally as Southwest Freeway; north of SH 288 known locally as Eastex Freeway	[8][9][20][25][26]
US 90	E–W	Liberty County to I-10	FM 2100 Beltway 8	13.5	21.7	Freeway portion from Crosby to I-610 known locally as Crosby Freeway; known locally as Beaumont Highway; officially US 90 follows I-10 after junction, but it is unsigned; US 90 signage restarts in Katy	[8][16][20][27][28][29]
Alt. US 90	N–S	I-10 to Fort Bend County	I-45 SH 288 I-610 Fort Bend Parkway Toll Road Beltway 8	20	32	Known locally as South Wayside Drive north of I-45, Old Spanish Trail between I-45 and Main Street west of SH 288, and South Main Street to Fort Bend County Line; US 90A south of I-610 is a limited-access parkway	[8][27][30]
Bus. US 90	W–E	I-610 to US 90 /FM 2100	Beltway 8	8.0	12.9	Business route from Houston to Crosby	[8][28][31][32]
US 290	E–W	I-610 to Waller County	Beltway 8 SH 6	33	53	Known locally as Northwest Freeway	[8][9][33][34][35]
Bus. US 290	W–E	Waller County to US 290 / SH 6	FM 2920	17	27	Business route through Hempstead, Prairie View, and Waller; former routing of US 290	[33][36][37]
Bus. US 290	W–E	US 290 / SH 6 to US 290 / SH 6	SH 6	1.2	1.9	Business route through Cypress	[9][38][39]
SH 3[40]	S–N	Galveston County to I-45	NASA Road 1 Beltway 8	8	13	Known locally as Old Galveston Road
SH 6	S–N	Fort Bend County to Waller County	Westpark Tollway FM 1093 US 290 FM 1960	30	48	Overlaps US 290 after its junction, which it follows out of the county	[8][9][33][41][42]
SH 35[43]	N–S	I-45 to Brazoria County	Beltway 8	6	9.7	Signage begins at I-45/I-610 Junction; known locally as Reveille Street between I-610 and Telephone Road, and known as Telephone Road from just north of Sims Bayou to Brazoria County
Spur 5[44]	N–S	I-45 to Brazoria County	Beltway 8	6	9.7	Future State Highway 35, Spur 5 begins at an onramp located at Jefferson and Dowling streets (where a State Highway 35 sign is visible), and is unsigned on the upper deck of I-45 until it exits at Calhoun; spur ends at US Alternate 90 (Old Spanish Trail).
SH 99 / SH 99 Toll Segment D[45]	S–N (Orbital in the future)	I-69/US 59 to I-10 in Katy	Westpark Tollway FM 1093	17.4	28.0	SH 99 is part of a third freeway-grade loop that is currently under construction around Greater Houston known as the Grand Parkway; opened in 1994. Mostly free, with only overpasses between FM 1093 and I-69/US 59 tolled.
SH 99 / SH 99 Toll Segment E[45]	S–N (Orbital in the future)	I-10 to US-290 in Katy	FM 529	15.4	24.8	SH 99 is part of a third freeway-grade loop that is currently under construction around Greater Houston known as the Grand Parkway; opened in 2013, electronic tolling using TxTag, TollTag or EZ-Tag.
SH 99 / SH 99 Toll Segment I-2[45]	S–N (Orbital in the future)	Bus. SH 146-E in Baytown to I-10 near Mont Belvieu	I-10	14	23	SH 99 is part of a third freeway-grade loop that is currently under construction around Greater Houston known as the Grand Parkway; phase I of this segment open 2008, phase II in planning stages; planned to be tolled
SH 146[46]	S–N	Galveston County to Chambers County	NASA Road 1 SH 225 I-10	16	26	Known in Baytown as Bob Lanier Freeway; bridge over the Houston Ship Channel called the Fred Hartman Bridge
Bus. SH 146[47]	S–N	SH 146 to Broadway Street	Spur 501	1.8	2.9	Business route to La Porte
Bus. SH 146[48]	S–N	SH 146 to SH 146	SH 99 SH 146	6.3	10.1	Business route through Baytown
SH 225[49]	E–W	SH 146 to just west of I-610	Beltway 8 I-610	15.6	25.1	Known in Houston as La Porte Freeway and in Pasadena as Pasadena Freeway
SH 249[50]	S–N	I-45 to Montgomery County	Beltway 8 FM 1960	22	35	Portion from Beltway 8 to just south of Tomball is a freeway; highway and freeway may possibly be expanded to SH 6 in Navasota.[51]
SH 288[52]	N–S	I-45 to Brazoria County	I-45 I-69/US 59 US 90 Alt. I-610 Beltway 8	11	18	Known locally as South Freeway
SH NASA Road 1[53]	W–E	I-45 / FM 528 to SH 146	SH 3 FM 270	7.5	12.1	Main route to NASA's Lyndon B. Johnson Space Center
Beltway 8[13]	Orbital	Officially designated from I-45 north of downtown Houston, going clockwise	Hardy Toll Road I-69/US 59 US 90 I-10 SH 225 SH 3 I-45 SH 35 SH 288 US 90 Alt. Westpark Tollway FM 1093 US 290 SH 249	83.128	133.782	Secondary loop of metro Houston, with a radius from downtown Houston of about 8 miles (13 km); main lanes are part of the Sam Houston Tollway while Beltway 8 comprises the service lanes; section between I-45 and I-69/US 59 is a freeway
Spur 5[54]	N–S	Dowling Street in downtown Houston to US 90 Alt.	I-45	2.929	4.714	Runs concurrent with I-45 from south of downtown to exit 44B; freeway grade from Downling Street to University Drive; proposed future corridor for a new SH 35 freeway
Spur 261[14]	N–S	I-45 to I-610	No major junctions	4.611	7.421	Known locally as North Shepherd Drive
Spur 330[15]	S–N	Garth Road in Baytown to I-10	SH 146	0.863	1.389	Short freeway-grade connector serving Baytown; known locally as Decker Drive
Spur 501[55]	S–N	Bayport Ship Channel to Bus. SH 146-D	No major junctions	1.5	2.4
Spur 527[56]	S–N	I-69/US 59 to Westheimer Road in Houston	No major junctions	0.8	1.3	Short freeway-grade connector serving Midtown neighborhood
Spur 548[57]	S–N	I-610 to Hardy Toll Road	Sam Houston Tollway	1.5	2.4	Unsigned, part of Hardy Toll Road
PR 1836[17]	S–N	Battleground Rd. to San Jacinto Battleground State Historic Site	San Jacinto Battleground State Historic Site	7.2	11.6	With state designation canceled over Battleground Rd. (formerly SH 134), PR 1836 no longer connects to rest of state highway system; formally PR 9

Toll Roads

All Harris County toll roads are maintained by the Harris County Toll Road Authority.

Route Name	Direction	Termini	Junctions	Length[3][4]		Remarks
				mi	km
Sam Houston Tollway[2]	Orbital	Middle Loop around Houston	SH 225 SH 3 I-45 SH 35 SH 288 Fort Bend Parkway Toll Road US 90 Alt. I-69/US 59 Westpark Tollway I-10 US 290 SH 249	83.128	133.782	Main lane portion of Beltway 8 secondary loop; the remaining portion of the loop is free
Hardy Toll Road[2]	S–N	I-610 to I-45	Beltway 8 FM 1960	21.6	34.8	Runs parallel to I-45; possible future expansion south to I-10
Tomball Tollway[2]	S-N			6	9.7
Westpark Tollway[2]	E–W	Westpark Drive in Houston to Fort Bend County	I-69/US 59 Beltway 8 SH 6	14	23	Runs parallel to Westheimer Road (FM 1093); possible future expansion east to I-610
Fort Bend Parkway[58]	E–W	US 90 Alt. to Fort Bend County	Beltway 8	6.2	10.0	Runs along Hillcroft Avenue; possible future expansion north to I-610; formerly part of SH 122 project
Grand Parkway	S-N & E-W (Orbital in the future)	I-69/US 59 to I-10 in Katy I-10 to US 290 in Katy Bus. SH 146-E in Baytown to I-10 near Mont Belvieu (Outer Loop around Houston once fully completed)	Westpark Tollway FM 1093 FM 529 I-10	46.8	75.3	Rest of the loop is currently under construction. Main lane portion of SH 99

Farm and Ranch to Market Roads

Route Name	Direction	Termini	Junctions	Length[3][4]		Remarks
				mi	km
FM 270[59]	N–S	NASA Road 1 to Galveston County	No major junctions	0.3	0.48	Known locally as Egret Bay Boulevard
FM 362[60]	W–E	Waller County back to Waller County	No major junctions	0.6	0.97	Concurrent with FM 1488 in very northwest corner of county
FM 521[61]	S–N	US 90 Alt. to Brazoria County	Beltway 8 I-610	6.3	10.1
FM 525[62]	E–W	I-69/US 59 to I-45	Hardy Toll Road	7.054	11.352	Known locally as Aldine-Bender Road
FM 526[63]	S–N	I-10 to Bus. US 90-U	US 90	4.625	7.443	Known locally as Maxie Road
FM 528[64]	E–W	I-45 / NASA Road 1 to Brazoria County	No major junctions	0.5	0.80[note 1]	Known locally as Friendswood Boulevard
FM 529[65]	E–W	US 290 to Waller County	SH 6	17	27.4[note 1]	Sometimes referred to as Spencer Boulevard
FM 865[66]	N–S	US 90 Alt. to Brazoria County	I-610 Beltway 8	9.5	15.3[note 1]	Known locally as Cullen Boulevard
FM 1092[67]	N–S	I-69/US 59 to Fort Bend County	No major junctions	0.2	0.32[note 1]	Known locally as Murphy Road
FM 1093[68]	E–W	I-610 to Fort Bend County	Beltway 8 SH 6	13.9	22.4[note 1]	A section of FM 1093 is also a section of Westheimer Road
FM 1485[69]	E–W	Montgomery County to Huffman Cleveland Road	No major junctions	1.1	1.8
FM 1488[70]	W–E	Waller County back to Waller County	No major junctions	0.6	0.97	Concurrent with FM 362 in very northwest corner of county
FM 1736[71]	N–S	Waller County back to Waller County	No major junctions	0.5	0.80	Runs in very northwest corner of county
FM 1876[72]	N–S	Bellaire Boulevard in Alief to Fort Bend County	No major junctions	2.2	3.5	Known locally as Synott Road
FM 1942[73]	E–W	Chambers County to US 90	No major junctions	8.4	13.5	Known locally as Crosby-Cedar Bayou Road
FM 1959[74]	W–E	I-45 to SH 3	No major junctions	1.339	2.155	Known locally as Dixie Farm to Market Road
FM 1960[75]	W–E	US 290 to Liberty County	SH 249 I-45 Hardy Toll Road I-69/US 59	39	62.8[note 1]	Long thoroughfare through northern suburbs of Houston
Bus. FM 1960-A[76]	W–E	FM 1960 to FM 1960	I-69/US 59	4.124	6.637	Business route through Humble
FM 2100[77]	S–N	US 90 to FM 1485	FM 1960 US 90 (Crosby Freeway) Bus. US 90-U	14.285	22.989	Known locally as Crosby-Huffman Road
FM 2351[78]	W–E	Galveston County to SH 3	I-45	1	1.6[note 1]	Known locally as Edgewood Drive
FM 2553[79]	W–E	I-45 to SH 3	No major junctions	1.152	1.854	Known locally as Scarsdale Boulevard
FM 2920[80]	W–E	Bus. US 290 to I-45	SH 249	30.849	49.647	Sometimes referred to as Waller-Tomball Road
FM 2978[81]	S–N	FM 2920 to Montgomery County	No major junctions	3.5	5.6[note 1]	Known locally as Huffsmith-Conroe Road
This length is approximate.

Adjacent counties

• Montgomery County (north)
• Liberty County (northeast)
• Chambers County (east)
• Galveston County (southeast)
• Brazoria County (south)
• Fort Bend County (southwest)
• Waller County (northwest)

See also

• Houston portal
• U.S. Roads portal

References

1. Staff. "Houston District Statistics: Centerline Miles (9/1/2010 thru 8/31/2011)". Texas Department of Transportation. Retrieved May 21, 2012.
2. Staff. "Toll Road Information - Overview". Harris County Toll Road Authority. Retrieved May 20, 2012.
3. General Highway Map - Harris County, Texas (Map). Cartography by Transportation Planning and Programming Division. Texas Department of Transportation. 1992. Sheet 1. Retrieved May 21, 2012.
4. General Highway Map - Harris County, Texas (Map). Cartography by Transportation Planning and Programming Division. Texas Department of Transportation. 1992. Sheet 2. Retrieved May 21, 2012.
5. Transportation Planning and Programming Division. "Interstate Highway No. 10". Highway Designation Files. Texas Department of Transportation.
6. Transportation Planning and Programming Division. "Interstate Highway No. 45". Highway Designation Files. Texas Department of Transportation.
7. Transportation Planning and Programming Division. "Interstate Highway No. 610". Highway Designation Files. Texas Department of Transportation.
8. Transportation Planning and Programming Division (2012). Texas County Map Book (PDF) (Map) (2012 ed.). 1:120,000. Texas Department of Transportation. p. 562. OCLC 867856197. Retrieved May 20, 2012.
9. Transportation Planning and Programming Division (2012). Texas County Map Book (PDF) (Map) (2012 ed.). 1:120,000. Texas Department of Transportation. p. 561. OCLC 867856197. Retrieved May 20, 2012.
10. Transportation Planning and Programming Division (2012). Texas County Map Book (PDF) (Map) (2012 ed.). 1:120,000. Texas Department of Transportation. p. 563. OCLC 867856197. Retrieved May 20, 2012.
11. Transportation Planning and Programming Division (2012). Texas County Map Book (PDF) (Map) (2012 ed.). 1:120,000. Texas Department of Transportation. p. 583. OCLC 867856197. Retrieved May 20, 2012.
12. Texas Department of Transportation. "Highway Designation File - State Highway Old San Antonio Road (OSR)". Retrieved May 20, 2012.
13. Transportation Planning and Programming Division. "State Highway Loop No. 8". Highway Designation Files. Texas Department of Transportation.
14. Transportation Planning and Programming Division. "State Highway Spur No. 261". Highway Designation Files. Texas Department of Transportation.
15. Transportation Planning and Programming Division. "State Highway Spur No. 330". Highway Designation Files. Texas Department of Transportation.
16. Transportation Planning and Programming Division (2012). Texas County Map Book (PDF) (Map) (2012 ed.). 1:120,000. Texas Department of Transportation. p. 582. OCLC 867856197. Retrieved May 20, 2012.
17. Transportation Planning and Programming Division. "Park Road No. 1836". Highway Designation Files. Texas Department of Transportation.
18. Staff. "Section 2: Urban Streets". Texas Department of Transportation. Retrieved May 20, 2012.
19. Transportation Planning and Programming Division. "Urban Road No. 1092". Highway Designation Files. Texas Department of Transportation.
20. Transportation Planning and Programming Division (2012). Texas County Map Book (PDF) (Map) (2012 ed.). 1:120,000. Texas Department of Transportation. p. 451. OCLC 867856197.
21. Google (May 21, 2012). "Overview Map of I-10 in Harris County" (Map). Google Maps. Google. Retrieved May 21, 2012.
22. Google (May 21, 2012). "Overview Map of I-45 in Harris County" (Map). Google Maps. Google. Retrieved May 21, 2012.
23. Google (May 9, 2013). "Overview Map of I-69 in Harris County" (Map). Google Maps. Google. Retrieved May 9, 2013.
24. Google (May 21, 2012). "Overview Map of I-610 in Harris County" (Map). Google Maps. Google. Retrieved May 21, 2012.
25. Transportation Planning and Programming Division. "U.S. Highway No. 59". Highway Designation Files. Texas Department of Transportation.
26. Google (May 21, 2012). "Overview Map of US 59 in Harris County" (Map). Google Maps. Google. Retrieved May 21, 2012.
27. Transportation Planning and Programming Division. "U.S. Highway No. 90". Highway Designation Files. Texas Department of Transportation.
28. Transportation Planning and Programming Division (2012). Texas County Map Book (PDF) (Map) (2012 ed.). 1:120,000. Texas Department of Transportation. p. 581. OCLC 867856197.
29. Google (May 21, 2012). "Overview Map of US 90 in Harris County" (Map). Google Maps. Google. Retrieved May 21, 2012.
30. Google (May 23, 2012). "Overview Map of US 90 Alt." (Map). Google Maps. Google. Retrieved May 23, 2012.
31. Transportation Planning and Programming Division. "Highway Designation File - Business U.S. Highway 90-U". Texas Department of Transportation.
32. Google (May 23, 2012). "Overview Map of US 90 Bus." (Map). Google Maps. Google. Retrieved May 23, 2012.
33. Transportation Planning and Programming Division (2012). Texas County Map Book (PDF) (Map) (2012 ed.). 1:120,000. Texas Department of Transportation. p. 540. OCLC 867856197.
34. Transportation Planning and Programming Division. "U.S. Highway No. 290". Highway Designation Files. Texas Department of Transportation.
35. Google (May 23, 2012). "Overview Map of US 290 in Harris County" (Map). Google Maps. Google. Retrieved May 23, 2012.
36. Transportation Planning and Programming Division. "Highway Designation File - Business U.S. Highway 290-H". Texas Department of Transportation.
37. Google (May 24, 2012). "Overview Map of BUS US 290-H in Harris County" (Map). Google Maps. Google. Retrieved May 24, 2012.
38. Transportation Planning and Programming Division. "Highway Designation File - Business U.S. Highway 290-L". Texas Department of Transportation.
39. Google (May 29, 2012). "Overview Map of Bus. US 290-L" (Map). Google Maps. Google. Retrieved May 29, 2012.
40. Transportation Planning and Programming Division. "State Highway No. 3". Highway Designation Files. Texas Department of Transportation.
41. Transportation Planning and Programming Division. "State Highway No. 6". Highway Designation Files. Texas Department of Transportation.
42. Google (May 23, 2012). "Overview Map of SH 6 in Harris County" (Map). Google Maps. Google. Retrieved May 23, 2012.
43. Transportation Planning and Programming Division. "State Highway No. 35". Highway Designation Files. Texas Department of Transportation.
44. Transportation Planning and Programming Division. "State Highway No. 35". Highway Designation Files. Texas Department of Transportation.
45. Transportation Planning and Programming Division. "State Highway No. 99". Highway Designation Files. Texas Department of Transportation.
46. Transportation Planning and Programming Division. "State Highway No. 146". Highway Designation Files. Texas Department of Transportation.
47. Texas Department of Transportation. "Highway Designation File - Business State Highway 146-D"
48. Texas Department of Transportation. "Highway Designation File - Business State Highway 146-E"
49. Transportation Planning and Programming Division. "State Highway No. 225". Highway Designation Files. Texas Department of Transportation.
50. Transportation Planning and Programming Division. "State Highway No. 249". Highway Designation Files. Texas Department of Transportation.
51. "Brazos Valley Council considers toll road to fund transportation needs". Bryan-College Station Eagle.
52. Transportation Planning and Programming Division. "State Highway No. 288". Highway Designation Files. Texas Department of Transportation.
53. Texas Department of Transportation. "Highway Designation File - State Highway NASA Road 1"
54. Transportation Planning and Programming Division. "State Highway Spur No. 5". Highway Designation Files. Texas Department of Transportation.
55. Transportation Planning and Programming Division. "State Highway Spur No. 501". Highway Designation Files. Texas Department of Transportation.
56. Transportation Planning and Programming Division. "State Highway Spur No. 527". Highway Designation Files. Texas Department of Transportation.
57. Transportation Planning and Programming Division. "State Highway Spur No. 548". Highway Designation Files. Texas Department of Transportation.
58. Staff. "About the Fort Bend County Toll Road Authority". Fort Bend County Toll Road Authority. Retrieved May 20, 2012.
59. Transportation Planning and Programming Division. "Farm to Market Road No. 270". Highway Designation Files. Texas Department of Transportation.
60. Transportation Planning and Programming Division. "Farm to Market Road No. 362". Highway Designation Files. Texas Department of Transportation.
61. Transportation Planning and Programming Division. "Farm to Market Road No. 521". Highway Designation Files. Texas Department of Transportation.
62. Transportation Planning and Programming Division. "Farm to Market Road No. 525". Highway Designation Files. Texas Department of Transportation.
63. Transportation Planning and Programming Division. "Farm to Market Road No. 526". Highway Designation Files. Texas Department of Transportation.
64. Transportation Planning and Programming Division. "Farm to Market Road No. 528". Highway Designation Files. Texas Department of Transportation.
65. Transportation Planning and Programming Division. "Farm to Market Road No. 529". Highway Designation Files. Texas Department of Transportation.
66. Transportation Planning and Programming Division. "Farm to Market Road No. 865". Highway Designation Files. Texas Department of Transportation.
67. Transportation Planning and Programming Division. "Farm to Market Road No. 1092". Highway Designation Files. Texas Department of Transportation.
68. Transportation Planning and Programming Division. "Farm to Market Road No. 1093". Highway Designation Files. Texas Department of Transportation.
69. Transportation Planning and Programming Division. "Farm to Market Road No. 1485". Highway Designation Files. Texas Department of Transportation.
70. Transportation Planning and Programming Division. "Farm to Market Road No. 1488". Highway Designation Files. Texas Department of Transportation.
71. Transportation Planning and Programming Division. "Farm to Market Road No. 1736". Highway Designation Files. Texas Department of Transportation.
72. Transportation Planning and Programming Division. "Farm to Market Road No. 1876". Highway Designation Files. Texas Department of Transportation.
73. Transportation Planning and Programming Division. "Farm to Market Road No. 1942". Highway Designation Files. Texas Department of Transportation.
74. Transportation Planning and Programming Division. "Farm to Market Road No. 1959". Highway Designation Files. Texas Department of Transportation.
75. Transportation Planning and Programming Division. "Farm to Market Road No. 1960". Highway Designation Files. Texas Department of Transportation.
76. Texas Department of Transportation. "Highway Designation File - Business Farm to Market Road No. 1960-A. Retrieved 2009-12-27.
77. Transportation Planning and Programming Division. "Farm to Market Road No. 2100". Highway Designation Files. Texas Department of Transportation.
78. Transportation Planning and Programming Division. "Farm to Market Road No. 2351". Highway Designation Files. Texas Department of Transportation.
79. Transportation Planning and Programming Division. "Farm to Market Road No. 2553". Highway Designation Files. Texas Department of Transportation.
80. Transportation Planning and Programming Division. "Farm to Market Road No. 2920". Highway Designation Files. Texas Department of Transportation.
81. Transportation Planning and Programming Division. "Farm to Market Road No. 2978". Highway Designation Files. Texas Department of Transportation.