"The Trinity River Corridor Project began as a flood control project and evolved, through creative planning, to become one of the most comprehensive developments in the country. This project alone represents $2 billion in public and private development and it will create a world-class greenway stretching for 20 miles within the heart of Dallas."
- Mayor Tom Leppert

Trinity River Corridor Project

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Dallas Trinity Parkway


The Trinity Parkway

Improving traffic flow with the Trinity Parkway from Highway 183/I-35 merge to Highway 175 and I-45, will relieve downtown traffic congestion. The proposed Trinity Parkway will connect these roadways, providing a new, approximately nine mile relief route around the west and south sides of Dallas' central business district. If the NTTA elects to be the developer after the project patrnering process, it will continue working on a strategy with project partners to complete the Trinity Parkway and "Beat 2014" along with the Trinity River Corridor Project teams. 

The construction of the Trinity Parkway reliever route facilitates TxDOT efforts in completing improvements to IH-30 and IH-35E (Canyon/Mixmaster/Lower Stemmons).  The IH-30/IH-35E improvements are proposed to be completed on an accelerated 15-year schedule. The work includes main lane and frontage road improvements, direct connections between IH-30 and IH-35E, and high occupancy vehicle (HOV) lanes.  It is also proposed that TxDOT extend the Woodall Rodgers Freeway  across the Trinity River to Singleton/Beckley Avenue. This will act as an integral part of the reliever system, providing access to the Trinity Parkway, Oak Cliff, and West Dallas. The Woodall Rodgers crossing of the Trinity River is a "signature" bridge designed by Santiago Calatrava, award winning international engineer and architect from Spain. The Margaret Hnt Hill bridge will be a new landmark for Dallas along with the Trinity Parkway.

When complete, the Trinity Parkway will be a tolled bypass around downtown Dallas, which will provide traffic relief for the IH-30 and IH-35E corridors. The Trinity Parkway is planned to include a main lane and ramp toll plazas. A 1997 Major Investment Study identified the construction of a new roadway in the Trinity River area as one of several projects identified to relieve congestion near downtown Dallas. Due to its proximity to other planned Trinity River improvements, environmental analysis continues to be comprehensive and extensive.

Funding for the planning and environmental study tasks is provided by the City of Dallas.  In a 1998 ballot initiative, voters approved $84 million for the Trinity Parkway Project.  Per the agreement between the NTTA and the City of Dallas, this amount will fund the environmental and permitting costs, with the remaining balance being used for right-of-way acquisition, utility adjustments, design and construction.  Additional funding sources for construction, operations and maintenance will be identified later in the project.  As various project components are finalized, it is anticipated that future funding agreements will identify the cost shares of other funding partners. 

Other agencies involved in the Trinity Parkway Project include:
The City of Dallas, the U.S. Army Corps of Engineers, the Texas Department of Transportation, the North Central Texas Council of Governments, the Federal Highway Administration, and the United States Environmental Protection Agency.


 Next Steps

Project Update

20031001 Trinity Parkway EIS

20050406 Trinity Update


CPR Trinity December 2008


Committee Briefing Trinity Parkway 1

Committee Briefing Trinity Parkway 2