Texas State Highway 146

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State Highway 146 marker

State Highway 146
Route information
Maintained by TxDOT
Length105.966 mi[1] (170.536 km)
Major junctions
South end I-45 at Texas City
  I-10 at Mont Belvieu

US 90 from Dayton to Liberty

US 190 at Livingston
North end
Future I-69 / US 59 at Livingston
Highway system
SH 145SH 147

State Highway 146 (SH 146) is a north–south highway in southeastern Texas beginning in Livingston, starting at U.S. Highway 59 (US 59) (Future I‑69) and proceeds south to Liberty, where it meets US 90. It continues in Dayton at US 90 and proceeds south through Baytown, terminating at I‑45 near La Marque and Texas City. The Fred Hartman Bridge over the Houston Ship Channel carries SH 146 traffic.


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 extended north to Dayton.[2] On August 3, 1932, SH 146 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 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.

Texas Spur 201.svg

Spur 201 was designated on December 17, 1941, from SH 146 in Black Duck Bay to Main Street.

Texas Loop 201.svg

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

Business routes[edit]

SH 146 has two business routes.

La Porte Business Spur[edit]

Texas Loop 410.svg

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.

The original Loop 410 was designated on October 5, 1960, replacing part of Loop 13 from I-410 and I-10 (which replaced the portion of Loop 13 from I-10 to US 90 as this portion of Loop 13 was upgraded to Interstate standards) to I-35. On July 31, 1969, Loop 410 was redesignated as an extension of I-410 as Loop 410 was upgraded to Interstate standards already and so that I-410 could become a full loop.

Baytown Business Loop[edit]

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.

Junction list[edit]

GalvestonBayou Vista I-45 / SH 6 – Houston, Galveston, Bayou Vista, HitchcockI‑45 exit 7 southbound, 7A northbound; south end of SH 3 overlap.
Texas City Loop 197 north (Texas City Port Boulevard) – Texas City
SH 3 north – League CityInterchange; north end of SH 3 overlap
FM 519 (Main Street) – La Marque, Texas City
FM 1765 (5th Avenue) – Texas City, Texas City
South end of freeway
FM 1764 (Lowry Expressway, Palmer Highway)
Loop 197 south (25th Avenue)
North end of freeway
FM 517 west – Dickinson
FM 646 west (Grand Avenue)
Kemah SH 96 west (League City Parkway) – League City
FM 518 west (Deke Slayton Boulevard) – League City
FM 2094 west (Main Street) – League City
county line
KemahSeabrook lineBridge over Clear Lake/Clear Creek
HarrisSeabrookShipyard Drive, 10th StreetInterchange
NASA 1 west (NASA Parkway) – Webster, Johnson Space Center
South end of freeway
PasadenaRed Bluff Road
Port Road, New Port Road
La Porte
Bus. SH 146 north (Wharton Weems Boulevard)
Northbound access only
Fairmont Parkway

Bus. SH 146 south (Main Street) – La Porte
Barbours Cut BoulevardSouthbound exit and northbound entrance
SH 225 west (La Porte Freeway) – Pasadena, Houston
La PorteBaytown lineFred Hartman Bridge over Houston Ship Channel
Bus. SH 146 – Baytown
South end of Loop 201 overlap; northbound exit and southbound entrance
Missouri Street
West Main Street
J.B. Le Fevre DriveSouthbound exit and northbound entrance
Spur 330 (Decker Drive) / Texas AvenueNorthbound exit and southbound entrance
Garth Road, Pruett Street
North Main Street

Bus. SH 146 (Alexander Drive) – Baytown
North end of Loop 201 overlap
county line
North end of freeway
Chambers FM 565 east – Cove
FM 1405 south
I-10 – Houston, BeaumontI-10 exit 797
Mont Belvieu Loop 207 north (Main Street) – Mont Belvieu
Loop 207 south (Main Street) – Mont Belvieu
FM 1942 west – Barrett
FM 3360 south
Liberty FM 1413 west
Dayton US 90 west – HoustonSouth end of US 90 overlap
SH 321 north – Cleveland
FM 1409 south – Mont Belvieu
Liberty Loop 227 north (Main Street)
FM 563 south – Wallisville
US 90 east – BeaumontNorth end of US 90 overlap
Loop 227 south (Main Street)
FM 1011 north
FM 2830 south – Ames
Hardin FM 834 – Daisetta
Moss Hill SH 105 – Cleveland, Beaumont
Rye FM 787 – Romayor, Saratoga
Polk FM 2610 south – Romayor
FM 943
FM 2665 west – Goodrich
FM 1988 south – Goodrich
Livingston US 190 – Huntsville, Woodville

Future I-69 / US 59
Northern terminus; US 59 is the future Interstate 69
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ Transportation Planning and Programming Division (n.d.). "State Highway No. 146". Highway Designation Files. Texas Department of Transportation. Retrieved July 8, 2018.
  2. ^ (PDF) https://publicdocs.txdot.gov/minord/MinuteOrderDocLib/003673816.pdf. Missing or empty |title= (help)
  3. ^ (PDF) https://publicdocs.txdot.gov/minord/MinuteOrderDocLib/003673820.pdf. Missing or empty |title= (help)
  4. ^ (PDF) https://publicdocs.txdot.gov/minord/MinuteOrderDocLib/003673819.pdf. Missing or empty |title= (help)
  5. ^ Texas Department of Transportation, Highway Designation File - State Highway Loop 410
  6. ^ Texas Department of Transportation, Highway Designation File - Business State Highway 146-D