Texas State Highway 146

State Highway 146
SH 146 highlighted in red
Route information
Maintained by TxDOT
Length	105.966 mi[1][a] (170.536 km)
Existed	1930–present
Major junctions
South end	I-45 / SH 6 at Texas City
Major intersections	I-10 at Mont Belvieu US 90 from Dayton to Liberty US 190 at Livingston
North end	Future I-69 / US 59 at Livingston
Location
Country	United States
State	Texas
Highway system
Highways in Texas Interstate US State Toll Loops Spurs FM/RM Park Rec
← SH 145 → SH 147

State Highway 146 (SH 146) is a north–south highway in southeastern Texas beginning at I-45 near La Marque and Texas City. It then crosses over the Fred Hartman Bridge over the Houston Ship Channel which carries SH 146 traffic. It then continues north towards Dayton, where it meets US 90 and then heads north and terminates in Livingston at US 59 (Future I-69).

SH 146 was designated on March 19, 1930, from SH 6/US 75 northward to Texas City as a renumbering of SH 6A. On July 2, 1932, SH 146 was extended north to Dayton.^[2] On August 3, 1932, SH 146 was extended north to Cleveland (the plan was to delete SH 132 when this extension was completed).^[3] On September 22, 1932, this extension was canceled, and SH 146 was instead extended north to Livingston, replacing SH 132.^[4] On December 16, 1967, SH 146 was relocated east of Liberty. On February 21, 1984, SH 146 was extended south from SH 3 to I-45. On March 28, 1996, SH 146 was relocated in Baytown replacing Loop 201. The old route of SH 146 was redesignated as Business State Highway 146-E.

Spur 201 was designated on December 17, 1941, from SH 146 in Black Duck Bay to Main Street. On September 23, 1959, Spur 201 was redesignated as Loop 201 and was extended to SH 146 at McKinney Road. On October 22, 1976, Loop 201 was extended to SH 146 at Ferry Road. On March 28, 1996, Loop 201 was redesignated as part of SH 146.

SH 146 begins at its southern terminus at Interstate 45 in Bayou Vista, running concurrent with Loop 197 for about 0.5 miles (0.80 km). It then heads northwest and interchanging with SH 3. It then passes by Moses Lake and runs by Trinity Bay. Between Bayview and Kemah, it intersects SH 96. The route then interchanges SH 225 before crossing at the Fred Hartman Bridge over the Houston Ship Channel; from 1953 to 1995, SH 146 crossed under the Houston Ship Channel via the Baytown Tunnel. In Baytown, the highway forms one of its business routes and then interchanges SH 330 before looping east. It then interchanges I-10 before entering Mont Belvieu. After heading north and entering Dayton, SH 146 meets US 90 and runs concurrent with it until reaching Liberty, intersecting SH 321 and Loop 227. It also crosses over the Trinity River before entering Liberty. After separating from US 90, the route heads north, then northeast after intersecting Loop 227, passing by the Trinity River National Wildlife Refuge and then passing through Hardin. It intersects SH 105 in Moss Hill as it proceeds north. The route then passes through Rye and by Ace before reaching Livingston. It intersects US 190 before reaching its northern terminus at US 59 (future Interstate 69 corridor).

SH 146 has two business routes.

Business State Highway 146-D (formerly Loop 410) is a business loop that runs from SH 146 in La Porte to Spur 501. The highway was designated on December 1, 1971 as Loop 410 from SH 146 east, north, and west to SH 146, and was marked as a business route of SH 146. On July 28, 1977, the section from SH 146 via Fairmont Parkway to Spur 501 was cancelled, and Loop 410 was rerouted replacing part of Spur 501 and all of Spur 498. Loop 410 was redesignated as Business State Highway 146-D on June 21, 1990.^[5][6] On March 26, 2009, the section from Spur 501 via Broadway Street north to Main Street and west via Main Street to SH 146 was given to the city of La Porte.

Business State Highway 146-E is a business loop that runs from SH 146 through Baytown to SH 146. On March 28, 1996, SH 146 was relocated in Baytown replacing Loop 201, and the old route of SH 146 was redesignated as Business State Highway 146-E.

County	Location	mi	km	Destinations	Notes
Galveston	Bayou Vista	0.0	0.0	I-45 / SH 6 – Houston, Galveston, Hitchcock	I-45 exit 7 southbound, 7A northbound; south end of SH 3 overlap.
	Texas City	0.1	0.16	Spur 197 north (Texas City Port Boulevard)	Former southern terminus of Loop 197
		0.7	1.1	SH 3 north – La Marque	Interchange; north end of SH 3 overlap
		1.9	3.1	FM 519 – Hitchcock, Texas City
		3.4	5.5	FM 1765 – La Marque, Texas City
		4.3	6.9	FM 1764 – Texas City	South end of freeway; access to HCA Houston Healthcare Mainland
		5.2	8.4	25th Avenue	North end of freeway; former northern terminus of Loop 197
		10.1	16.3	FM 517 – Dickinson, San Leon
		12.2	19.6	FM 646 – Dickinson, Bacliff	Future south end of SH 99 overlap
	Kemah	14.4	23.2	SH 96 west – League City
		14.7	23.7	FM 518 west / FM 2094 west	Interchange; south end of freeway
Galveston–Harris county line	Kemah–Seabrook line			Bridge over Clear Lake
Harris	Seabrook	16.6	26.7	NASA 1 – Seabrook, Johnson Space Center	Access to Houston Methodist Clear Lake Hospital
		18.1	29.1	Red Bluff Road
	​	19.6	31.5	Port Road – Port of Houston Bayport Terminal	No northbound exit (closed until February 2025), access is via U-turn at Shoreacres Boulevard
	​	20.7	33.3	Shoreacres Boulevard, Choate Road
	La Porte	21.7	34.9	McCabe Road	No northbound entrance
		21.8	35.1	Bus. SH 146 (Wharton Weems Boulevard)	Former southern terminus of unsigned Loop 410
		23.0	37.0	Fairmont Parkway
		23.9	38.5	Bus. SH 146 (West Main Street) / Spencer Highway	Former northern terminus of unsigned Loop 410
		24.8	39.9	Barbours Cut Boulevard	Southbound exit and northbound entrance
		25.5	41.0	SH 225 west – Pasadena, Houston
	La Porte–Baytown line			Fred Hartman Bridge over Houston Ship Channel
	Baytown	28.2	45.4	SH 99 Toll north (Grand Parkway) to Bus. SH 146 / Wyoming Street	Northbound exit and southbound entrance; future north end of SH 99 overlap; former southern terminus point of Loop 201
		28.4	45.7	Missouri Street
		29.3	47.2	West Main Street	Signed at Missouri Street northbound
		30.0	48.3	West Texas Avenue, Decker Drive, J. B. LeFevre Drive
		30.8	49.6	Spur 330 west to I-10
		31.1	50.1	Garth Road, Decker Drive
		31.8	51.2	North Main Street
		33.5	53.9	Bus. SH 146 (Alexander Drive)	Interchange; north end of freeway; former northern terminus point of Loop 201
Chambers		36.0	57.9	FM 565 east
		36.4	58.6	FM 1405 south / Twisted Oak Street
	Mont Belvieu	39.5	63.6	I-10	I-10 exit 797
		40.6	65.3	Loop 207 north
		41.4	66.6	FM 565 east
		42.0	67.6	Loop 207 south
		42.1	67.8	FM 1942 west to FM 2100
		42.9	69.0	SH 99 Toll (Grand Parkway)
		43.4	69.8	FM 3360 south
Liberty	​	48.7	78.4	FM 1413 west to US 90
	Dayton	55.0	88.5	US 90 west – Houston	South end of US 90 overlap
		55.3	89.0	SH 321 north (South Cleveland Street) to FM 1960 – Cleveland
		55.6	89.5	FM 1409 south
	Liberty	61.1	98.3	Loop 227 north / FM 2684 south
		61.9	99.6	FM 563 south – Anahuac
		62.6	100.7	US 90 east – Beaumont	North end of US 90 overlap
		64.1	103.2	Loop 227 south – Business District
		65.3	105.1	FM 1011 north
	​	67.4	108.5	FM 2830 south – Ames
	Hardin	70.3	113.1	FM 834 – Daisetta
	Moss Hill	76.6	123.3	SH 105 – Cleveland, Batson	Former FM 162
	Rye	90.1	145.0	FM 787 – Romayor, Saratoga	Former alignment of SH 105
Polk	​	98.5	158.5	FM 2610 south – Romayor
	​	100.7	162.1	FM 943 east – Segno, Dallardsville
	​	102.1	164.3	FM 2665 west – Goodrich
	​	107.3	172.7	FM 1988 south – Goodrich
	Livingston	111.7	179.8	US 190 (East Church Street)	Access to CHI St. Luke's Health Livingston Memorial Hospital
		113.3	182.3	Future I-69 / US 59 / Bus. US 59-J south	Northern terminus; US 59 is the future Interstate 69
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access        Tolled