Interstate 345 Texas
Interstate 345 overlays the southernmost section of U.S. 75 along the Central Expressway between Downtown and Cle Elum in Dallas. The route is unmarked, with U.S. 75 signed alone on the mostly elevated route between IH 30 / IH 45 and State Spur 366 (Woodall Rogers Freeway).
Exits along IH 345 extend the IH 45 numbering system northward to SS 366 (Woodall Rogers Freeway). They reset at the exchange with Woodall Rodgers Freeway, which is Exit 1 along U.S. 75 (Central Expressway) southbound.1
IH 345 was built in conjunction with the IH 45 / Central Expressway project in the 1970s.2 The designation was approved by AASHTO on June 30, 1970.
North End – Dallas, TX
South End – Dallas, TX
Mileage – 1.40
Cities – Dallas, TX
- Junctions –
Source: December 31, 2018 Interstate Route Log and Finders List
TXDOT contacted local map companies and requested them not display Interstate 345 on their maps as to avoid confusion for motorists.
North End – Dallas, Texas
A two-wye interchange (Exit 286A) joins the north end of unmarked IH 345 with Woodall Rodgers Freeway (SS 366) west to the Stemmons Freeway and the Margaret Hunt Hill Bridge to the Trinity Groves neighborhood. U.S. 75 exit numbers commence at succeeding off-ramp for Hall Street and Lemmon Avenue. Photos taken 08/06/19.
SS 366 ascends from the tunnel beyond Pearl Street, rising to a directional T interchange with U.S. 75 (Central Expressway) and IH 345 south by Uptown and the Old East Dallas community. Photos taken 08/06/19.
South End – Dallas, Texas
IH 45 begins on the top deck of the systems interchange with IH 30 and the Central Expressway. Two lanes curve east onto IH 30 toward Mesquite and Texarkana. Photos taken 09/05/09.
An end sign for IH 45 precedes the multi-level interchange with IH 30 and U.S. 75 / IH 345 (Central Expressway) by a half mile. U.S. 75 extends the IH 45 freeway northward to Colbert, Oklahoma, serving the communities of McKinney, Sherman and Denison, Texas. Photo taken by Justin Cozart (12/02).
- Michael R. Wilson, email: “I-45/I-345/US-75 in Dallas” August 11, 2003
- “From Anywhere to Everywhere: The Development of the Interstate Highway System in Texas”
http://tti.tamu.edu/interstate_anniversary/white_paper/by Penny Beaumont, Rhonda Brinkmann, David Ellis, Chris Pourteau, and Brandon V. Webb, Texas Transportation Institute, page 34.
Page updated August 16, 2019.