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Texas State Highway 78

From Wikipedia, the free encyclopedia

State Highway 78 marker

State Highway 78
Route information
Maintained by TxDOT
Length 90.83 mi[1] (146.18 km)
Existed 1923 – present
Major junctions
South end
I-30 in Dallas

I-635.svg I-635 in Garland
US 380.svg
US 380 in Farmersville
US 69.svg
US 69 in Leonard

US 82.svg
US 82 in Bonham
North end
Oklahoma State Highway 78.svg
OK 78 at TexasOklahoma state line
Highway system
SH 77 SH 79

State Highway 78 or SH 78 is a state highway that follows surface roads in a predominantly southwest-to-northeast direction in the Dallas area before traveling 90 miles (145 km) north-northeast to the Oklahoma State border.

Route description

The highway's southern terminus is at Interstate 30 in Dallas. From there, it follows Grand Avenue along White Rock Lake and then Garland Road into Garland as it passes Interstate 635. In downtown Garland, Highway 78 follows the central streets of Avenues B and D before joining Lavon Drive and moving northeastward.

It continues to the northeast through Sachse and Wylie, crossing between Lake Ray Hubbard and Lake Lavon. It passes through Lavon before turning north through Farmersville and Blue Ridge. At SH 160, just before SH 121, SH 78 turns east, continuing to Leonard before turning northeast again to Bailey. At Bailey, SH 78 turns north and cuts through Bonham (as Center Street) just before it reaches the border with Oklahoma, where it crosses a 1938 truss bridge over the Red River. The route continues as Oklahoma State Highway 78 through Durant to its terminus at Tishomingo.


The highway was originally designated on August 21, 1923 from Dallas to Bonham, replacing SH 5C.[2] On May 19, 1924, the section from Desert to Bonham was cancelled. SH 78 was instead rerouted on its current route north of Desert to Bonham.[3] On March 30, 1933, SH 78 was extended to Oklahoma.[4] On October 6, 1943, SH 78 extended south to Loop 12. On June 21, 1951, The section from US 67 to Loop 12 was renumbered to Spur 244. US 67 was rerouted over current I-30, and the old route was renumbered to FM 7, which would be cancelled and transferred to SH 66 on November 30, 1961. SH 78A was a spur designated on May 9, 1927 from Desert to Bells. This spur was renumbered as SH 160 on March 19, 1930.

The section of the highway between I-30 and SH 66 was part of U.S. 67 until 1951.


In 1990 SH 78 was flooded, as engineers at the Lake Lavon Dam decided to release the water from the lake into the East Fork of the Trinity River. For a month and a half, the traffic going between Wylie and the Eastern portion of Collin County was diverted to go through the city of Rockwall, a nearly 20-mile (32 km) detour. The railroad that ran adjacent to the highway was completely washed out, and significant shoulder damage was done to the highway.

Junction List

County Location mi km Destinations Notes
Dallas Dallas I-30 (R.L. Thornton Freeway) Southern terminus; I-30 exits 48B-49A
Loop 12 (Buckner Boulevard)
Spur 244 west (Northwest Highway) to I-635
Garland I-635 west (Lyndon B. Johnson Freeway) I-635 exit 8
SH 66 east
Pres. George Bush Tpk. Interchange
Collin Wylie FM 544 west
FM 2514 north (Ballard Avenue)
FM 3412 west (Brown Street)
Lavon SH 205 south – Rockwall

Bus. SH 78 north – Lavon

Bus. SH 78 south – Lavon
FM 6 east – Caddo Mills

Bus. SH 78 north – Copeville

Bus. SH 78 south – Copeville
Farmersville US 380 – McKinney, Greenville Interchange

Bus. SH 78 north

Bus. SH 78 south – Farmersville
FM 2756 west

Bus. SH 78 north – Blue Ridge
Blue Ridge FM 981 – Blue Ridge, Celeste

Bus. SH 78 south – Blue Ridge
SH 160 north to SH 121 – Whitewright
Fannin FM 815 north – Trenton
FM 981 north South end of FM 981 overlap
FM 981 south North end of FM 981 overlap
Leonard FM 896 north
US 69 south – Celeste South end of US 69 overlap
US 69 north / Spur 241 west – Whitewright North end of US 69 overlap
FM 1553 north
Bailey FM 816 south
SH 11 – Whitewright, Wolfe City
FM 1552 east
FM 1553 west
FM 68 east
FM 1629 south
FM 271 south – Bonham State Park
Bonham SH 56 – Ector, Dodd City
Loop 205 (10th Street)
US 82 – Sherman, Paris
FM 898 north
SH 121 south – Melissa, McKinney
FM 1753 west
FM 1396 east
FM 274 west
Sowells Bluff SH-78 north (State Highway 78 Bridge at the Red River) Continuation into Oklahoma
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


This page was last edited on 27 May 2018, at 20:13
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