Interstate 635 (Texas)

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Interstate 635 marker

Interstate 635
Lyndon B. Johnson Freeway, the Dallas Orbital
Route information
Maintained by TxDOT
Length: 36.999 mi[1][2] (59.544 km)
Existed: October 1, 1959[1] – present
Major junctions
South end: I‑20 in Balch Springs
  I‑35E in Dallas
US 75 in Dallas
I‑30 in Mesquite
US 80 in Mesquite
West end: SH 121 / International Parkway near DFW Airport
Highway system
I‑610 I‑820

Interstate 635 (I-635) is a 37-mile-long (60 km) partial loop around Dallas, Texas, in the United States between I-20 in Balch Springs and State Highway 121 (SH 121) at the north entrance of the Dallas-Fort Worth International Airport in Grapevine. It intersects I-35E at exits 27B–C, but does not connect with I-35W. It is known locally as the Lyndon B. Johnson Freeway, the Dallas Orbital, or LBJ, named after Lyndon B. Johnson, the former U.S. Senator from Texas, 37th Vice President, and the 36th President of the United States.

Because the portion of I-20 between Spur 408 to I-635 retains the same names as 635, the two highways can be considered 3/4 of the orbital road around Dallas. Together with Spur 408, a portion of Texas State Highway Loop 12 (Walton Walker Freeway), and a portion of Interstate 35E, the Stemmons Freeway, 635 and 20 complete the Dallas Orbital.

Route description[edit]

I-635 signage on the Dallas North Tollway frontage road. Galleria Dallas can be seen in the background.

I-635 begins at an intersection with I-20 in southeast Dallas, and travels northward through Balch Springs into Mesquite, where it intersects U.S. Highway 80 (US 80) and I-30. The route then turns to the northwest, continuing near the border between Dallas and Garland. Six miles (9.7 km) later is takes a general westward turn as it intersects US 75 at the High Five Interchange. The section from I-35E to US 75 (Central Expressway) is one of the busiest stretches of road in the Dallas-Fort Worth Metroplex, at virtually all hours of the day and night. The route continues west, intersecting the Dallas North Tollway and its original terminus, I-35E in Farmers Branch. The freeway then continues to the northwest, intersecting the President George Bush Turnpike in Irving before arriving at its final terminus at SH 121 at the north entrance to the Dallas-Fort Worth International Airport.


A 1955 photo of the Interstate Highway city plans

I-635 was originally designated by the Texas Department of Transportation in 1959 as a loop around the eastern side of Dallas, connecting with I-35E to the northwest and southwest sides of the city.

In January 1969, the first section to open to motorists was a 10-mile (16 km) section from US 75 to Barnes Bridge in Mesquite[clarification needed]. In February 1970, the highway from US 75 westward to I-35E northwest of Dallas opened to traffic. The I-635 designation was truncated in 1971 when I-20 was rerouted south of Dallas, taking over 13 miles (21 km) of I-635's former route.[1]

The connecting section of I-20 from the west was not completed until 1978. Initially, the section between I-35E and US 80 in southeast Dallas was concurrent with I-20. When the outlet for I-20 from southeast of Dallas to Terrell was completed, the I-635 designation was removed from I-35E to its intersection with I-20.

An additional westward expansion (to the north entrance of DFW Airport) was designated in 1974 and opened in the 1980s.

Later changes[edit]

The High Five construction project (so called because it is five levels and rises almost 120 feet (40 m) above the lowest level), a rebuild of the interchange of I-635 and US 75, was opened for traffic in February 2006. This interchange carries over 500,000 vehicles per day and was built as the largest interchange in the state of Texas to handle this vehicle load.


A $2.7 billion project was started on May 16, 2011, to widen I-635 and dig subsequent high-occupance toll (HOT) lane tunnels beneath the primary roadway from I-35E to the High Five Interchange, a length of 17 miles (27 km). Construction time was estimated in 2011 at five years.[3] The new freeway will have tolled express lanes, known as TEXpress lanes, in between the main lanes or underneath them. The cost to drive on them fluctuates based on the current flow of traffic at the time. The project is among several billion dollar plus projects in the planning phase in and around downtown Dallas (along with the rebuild of the I-35E & I-30 "Mixmaster" and the new Trinity Parkway).[citation needed]

Exit list[edit]

County Location Mile km Exit Destinations Notes
Dallas Balch Springs 0.0 0.0 I‑20 west – Fort Worth Southbound exit and northbound entrance
0.1 0.2 1C I‑20 east – Tyler, Shreveport Southbound exit and northbound entrance
0.4 0.6 1A Seagoville Road
1.5 2.4 1B Elam Road
2.6 4.2 2 Lake June Road
Mesquite 3.6 5.8 3 West Cartwright Road, Bruton Road
5.0 8.0 4 SH 352 (Scyene Road, Military Parkway)
5.9 9.5 5 Gross Road
6.6 10.6 6 US 80 – Dallas, Terrell Signed as exits 6A (west) and 6B (east)
8.1 13.0 7A Towne Centre Drive Southbound exit and northbound entrance
7.5 12.1 7B Town East Boulevard – Town East Mall Signed as exit 7 northbound
8.7 14.0 8 I‑30 (US 67) – Dallas, Texarkana Signed as exits 8A (west) and 8B (east)
9.7 15.6 9A Oates Drive, Galloway Avenue
10.8 17.4 9B La Prada Drive Southbound exit and northbound entrance
Garland 11.4 18.3 11A Centerville Road, Ferguson Road
12.2 19.6 11B Northwest Highway, Shiloh Road Signed "To SH 78 (Garland Avenue)" westbound
13.4 21.6 12 SH 78 (Garland Road) – Dallas Arboretum Eastbound exit and westbound entrance
13.9 22.4 13 Jupiter Road, Kingsley Road, Walnut Hill Lane
Dallas 15.2 24.5 14 Plano Road, Church Road
16.0 25.7 15 Miller Road, Royal Lane
16.6 26.7 16 Skillman Street, Audelia Road
17.6 28.3 17 Forest Lane, Abrams Road
18.2 29.3 18A Greenville Avenue
19.5 31.4 18B TI Boulevard Westbound exit is via exit 18A
18.8 30.3 19A US 75 (Central Expressway) – Dallas, McKinney High Five Interchange
19.6 31.5 19B Coit Road
20.2 32.5 20A Park Central Drive Westbound exit and eastbound entrance
21.1 34.0 20B Hillcrest Road Signed as exit 20 eastbound
21.5 34.6 21 SH 289 (Preston Road)
22.4 36.0 22A Montfort Drive Westbound exit and eastbound entrance
22.8 36.7 22B Dallas Parkway, Inwood Road Eastbound exit is via exit 22D
23.2 37.3 22
Dallas North Tollway Signed as exits 22C (north) and 22D (south)
24.1 38.8 23 Midway Road, Welch Road
25.2 40.6 24 Marsh Lane
25.8 41.5 25 Webb Chapel Road
26.8 43.1 26 Josey Lane Westbound exit is via exit 25
27.5 44.3 27A Denton Drive, Harry Hines Boulevard Westbound exit and eastbound entrance
27.8 44.7 27B–C I‑35E (Stemmons Freeway) – Denton, Dallas Signed as exits 27B (north) and 27C (south); left-lane exit
Farmers Branch 29.0 46.7 28 Luna Road
Irving 30.0 48.3 29 Valley View Lane Westbound exit and eastbound entrance
31.2 50.2 29 President George Bush Turnpike / Las Colinas Boulevard / Valley View Lane Eastbound exit and westbound entrance; signed as exits 29A (south) and 29B (north)
30.2 48.6 30 President George Bush Turnpike south Westbound exit and eastbound entrance
30.7 49.4 31 MacArthur Boulevard Westbound high load traffic must exit here and re-enter the freeway just before Belt Line Road
31.9 51.3 31B Olympus Boulevard Eastbound exit is via exit 31
32.8 52.8 33 Belt Line Road Eastbound high load traffic must exit here and re-enter the freeway just past MacArthur Boulevard
34.9 56.2 34 Freeport Parkway
Coppell 35.8 57.6 35 Royal Lane
Tarrant Grapevine 36.7 59.1 36A SH 121 south to International Parkway – D/FW Airport Westbound exit and eastbound entrance
36.9 59.4 36B SH 121 north to Sam Rayburn Tollway / Bass Pro Drive Westbound exit and eastbound entrance
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]


  1. ^ a b c Transportation Planning and Programming Division. "Interstate Highway No. 635". Highway Designation Files. Texas Department of Transportation. Retrieved April 2, 2012. 
  2. ^ DeSimone, Tony (October 31, 2002). "Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of October 31, 2002". Route Log and Finder List. Federal Highway Administration. Retrieved September 9, 2007. 
  3. ^ Betz, Jonathan (May 16, 2011). "HOV lanes close on LBJ Freeway as 5-year, $2.7 billion makeover begins in North Dallas". Dallas Morning News. Retrieved May 16, 2011. 

External links[edit]

Route map: Google / Bing