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State Highway 121 (Texas): Wikis


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Texas 121.svgToll Texas 121.svg
State Highway 121
Length: 85.56[1] mi (137.69 km)
Formed: by 1939
Southwest end: I-35W.svgUS 287.svg I-35W/US 287 at Fort Worth
I-820.svg I-820

I-635.svg I-635
I-35E.svg I-35E
US 75.svg US 75
US 380.svg US 380
US 69.svg US 69
US 82.svg US 82

Northeast end: Texas 78.svg SH 78
Highways in Texas
< SH 120 SH 122 >
InterstateU.S.T.X. (LoopsSpursRecFM)

State Highway 121, locally known as 121, is a diagonal state highway, angling from southwest to northeast through north central Texas. It runs from downtown Fort Worth, Texas at the junction of Interstate 35W to Bonham, Texas, just north of a junction with U.S. Highway 82.


Route description

SH 121 Business west from IH-35E towards Grapevine

Sections between downtown Fort Worth and Grapevine, Texas are freeway, including a small segment near Hurst, Texas that coincides with Interstate 820. At Bedford, Texas it has an interchange with State Highway 183, the Irving freeway that leads toward Dallas; it has an interchange with State Highway 360, which leads toward Arlington, Texas, just to the west of the north entrance to the Dallas/Fort Worth International Airport, to which State Highway 121 gives access. At Grapevine it has interchanges with State Highway 114 and Interstate 635 before becoming a limited-access tollway that passes between Lewisville and Frisco.

It is very heavily traveled south and west of McKinney and has become an urban highway due to the rapid growth of the Dallas-Fort Worth Metroplex. Sections not yet of freeway quality are scheduled for upgrade or replacement as a freeway; between Frisco and McKinney service roads are in place along with one overpass at Custer Road. Service roads extending southwest to northeast along the corridor from Lewisville to McKinney are free of charge, however the main lanes within the right-of-way are tolled as part of the Sam Rayburn Tollway operated by the North Texas Tollway Authority (NTTA.) The highway's northeastern half is primarily two lanes wide and carries significantly less traffic.

It meets Interstate 35E at Lewisville, Texas, State Highway 289 near Frisco, Texas, U.S. Highway 75 and U.S. Highway 380 in McKinney, Texas, U.S. Highway 69 at Trenton, Texas, and State Highway 78 just north of Bonham.

Plans have been made to extend 121 south from Fort Worth to Cleburne, Texas, as a toll road called Southwest Parkway to be operated by the NTTA.

In March, 2009, work was completed on a short stretch of TX 121 northeast of DFW Airport which upgraded 2 signalized at-grade intersections to a freeway, with overpasses at both intersections, clearing up a problem for rush-hour traffic.[2]

Sam Rayburn Tollway

The Sam Rayburn Tollway[3] (State Highway 121 Toll or SH 121T) is a toll facility to be built as the main lanes of State Highway 121 in Collin County, Texas. The North Texas Tollway Authority (NTTA), in conjunction with the Texas Department of Transportation (TxDOT), has studied potential options for constructing SH 121 as a tollway between the Dallas North Tollway and US 75 (Central Expressway), a distance of approximately 12 miles (19 km).

Tolls are collected along the entire route by using only electronic toll collection with no tollbooths or toll collector, like the Westpark Tollway in Houston. People will be able to use a transponder unit known as a TollTag attached to a vehicle's windshield, which communicates with overhead sensors to deduct tolls from the user's toll account. If a person does not have a TollTag, they can still drive on the tollway, because the overhead sensors will scan and record the licence plate number, locate the owner's address, and send a monthly bill showing their toll cost plus 1/3 of a toll cost (to cover the license plate processing) plus a $1.00 invoice fee. [3]

The original portion of the toll road from Business 121 near Coppell to FM 2281 opened in May 2006, and toll collection started December 1 of that year. The tolled portion extended to Hillcrest Rd. in Plano/Frisco on August 31, 2008. The tollway was extended to Custer Rd. on September 1, 2009, and again to Hardin Blvd. in McKinney on October 1, 2009.

The toll portion of SH 121 was named in honor of Sam Rayburn at a North Texas Tollway Authority meeting on March 16, 2009.[3]


In early 2007, the Spanish firm Cintra agreed to a $2.8 billion, 50-year deal to finish building and maintain SH 121.[4] However, critics of the deal have questioned both its length—the contract allows Cintra to collect tolls for 50 years—and the fact that the North Texas Tollway Authority (NTTA) was prevented from bidding on the contract. In addition, general opposition to the toll plan organized, pointing out that the segment through Denton County had already been paid for.[5]

To answer some of these complaints, Texas legislators pressed the Texas Department of Transportation to allow the NTTA to bid.[6] The Authority announced their proposed bid in early May 2007, which would provide approximately $3.3 billion in road funding, but is based on traffic counts that differ from those used by Cintra.[7]

On June 28, 2007, the Texas Transportation Commission announced it would pursue the proposal from the North Texas Tollway Authority (NTTA). [8]

Exit list

There are no mileposts on any state freeway in Texas. The exits are shown from southwest to northeast.

County Location Destinations Notes
Tarrant Fort Worth Spur 347 west (Belknap Street) – Downtown Fort Worth Continuation beyond I-35W
I-35W / US 287 / US 377 south – Denton, Waco
US 377 north (Belknap Street) Northbound exit and southbound entrance
Sylvania Avenue
Riverside Drive
Beach Street
Maxine Street Northbound exit and southbound entrance
Haltom City
Haltom Road
Carson Street
Minnis Drive
Richland Hills Handley-Ederville Road
I-820 south South end of I-820 overlap
SH 10 east / SH 183 west – Richland Hills South end of SH 183 overlap; signed as exit 24 southbound
Pipeline Road, Glenview Drive Signed as exit 23 eastbound
North Richland Hills
SH 26 / FM 1938 north (Davis Boulevard) – Colleyville, Tarrant County College Northeast Campus Signed as exit 22A northbound
I-820 west North end of I-820 overlap
Bedford-Euless Road Signed as exit 22A northbound
FM 3029 north (Precinct Line Road) / Hurstview Drive
Norwood Drive, Brown Trail
Bedford Bedford Road, Forest Ridge Drive, Brown Trail
Central Drive, Forest Ridge Drive
SH 183 east – D/FW Airport South Entry, Irving No southbound exit; north end of SH 183 overlap
Murphy Drive, Euless Westpark Way Northbound exit is via SH 183 east
Harwood Road
FM 157 south / Cheek-Sparger Road
Glade Road
Hall-Johnson Road
Stone Myers Parkway Northbound exit and southbound entrance
SH 360 south – Arlington Southbound exit and northbound entrance
William D. Tate Avenue Southbound exit is via SH 114 west
SH 114 west – Bridgeport South end of SH 114 overlap; northbound exit is via Tate Avenue
Spur 103 (Main Street)
SH 114 Bus. west (Texan Trail) to SH 26
SH 114 east – Irving, Dallas North end of SH 114 overlap
D/FW Airport
I-635 east
Bass Pro Drive
FM 2499 north (Grapevine Mills Parkway) – Flower Mound No northbound entrance
Dallas Coppell,
Sandy Lake Road / Grapevine Mills Parkway / Freeport Parkway / SH 26 south SH 26 accessible from south only
Denton Coppell,
SH 121 Bus. north – Lewisville
Denton Tap Road The tolled stretch of 121 begins after this exit
MacArthur Boulevard
Lewisville I-35E (US 77) – Denton, Dallas Northbound exit to I-35E north is via MacArthur Boulevard exit
Marchant Boulevard, Huffines Boulevard
Hebron Parkway
Carrollton Parkway
Lewisville FM 544
SH 121 Bus. south / FM 2281Lewisville
The Colony
Standridge Drive
FM 423 (Main St.) to Little Elm
Plano Parkway/Paige Road
Plano Spring Creek Parkway
Legacy Drive
Collin Frisco,
Dallas North Tollway
SH 289 (Preston Rd.)
Hillcrest Road/Robinson Road
Coit Road
Independence Parkway
Custer Road
Alma Road
Stacy Road
Lake Forest Drive/Watters Road
Hardin Boulevard SRT opened to this point October 1, 2009.
US 75 (North Central Expressway) Multiplexes with US75 to Melissa, TX at US75 exit 45.
Eldorado Parkway Signed as exit 39
Spur 359 / FM 3038 (Louisiana Street/Virginia Parkway.) Signed as exit 40A
White Avenue Signed as exit 40B
US 380 (University Drive) Signed as exit 41
Wilmeth Road Signed as exit 42
FM 543 (Weston Road) Signed as exit 43
Telephone Road/Davis Road Signed as exit 44
US 75 (North Central Expressway) Signed as exit 45 (End of US75/TX121 multiplex)
SH 5 At-Grade Interchange
FM 545 (Sherman Street) At-Grade Intersection
FM 2933 At-Grade Intersection
FM 455 (White Street) At-Grade Intersection
FM 2662 (Houston Street) At-Grade Intersection
FM 160 At-Grade Intersection
FM 819 At-Grade Intersection
US 69 Diamond Interchange
SH 121 Bus. At-Grade Intersection
SH 11 Diamond Interchange
FM 1629 At-Grade Intersection
SH 311 At-Grade Interchange
SH 56 At-Grade Interchange
US 82 Diamond Interchange
FM 898 At-Grade Intersection
SH 78 At-Grade Interchange (Northern Terminus)


  1. ^ Texas Department of Transportation, [1]
  2. ^ "Overpasses give non-stop route between Frisco and D/FW", WFAA-TV report, March 20, 2009.
  3. ^ a b [2]

External links


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