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.
- Council authorized an Interlocal Agreement (ILA) with NTTA and TxDOT in November 1999
Established City’s support of the Parkway
Set cost-sharing responsibilities and reimbursement conditions
ILA specified that “the City…commits $84 million of the proceeds of the City Bonds to the evaluation, design and construction of the Trinity Parkway…”
ILA also specified that “the City shall fund the costs of preparing the Studies…from the $84 million of the City Bond proceeds committed by the City…”
Council has previously approved one original funding amount and 3 supplements provided to NTTA
Funds are placed in an interest bearing escrow account and drawn by NTTA as needed
- Preliminary design of IH-30 and IH-35E with Canyon/Mixmaster Improvements began in Spring 2000.
- Trinity Parkway EIS to be completed in 2008. Early design will begin in 2007, with construction starting in 2008 and completion in 2013.
- Margaret Hunt Hill bridge construction scheduled for completion in 2010.
- The IH-30 Signature Bridge design scheduled for completion in 2009, with a construction completion in 2011.
- Dallas City Council approved the TxDOT Trinity Parkway Corridor MTIS on September 10, 1997. Dallas County and Dallas Area Rapid Transit (DART) also approved the MTIS at around the same time period. On March 12, 1998, the Regional Transportation Council amended the regional transportation plan "Mobility 2020" to include the Trinity Parkway Corridor improvements.
- On May 2, 1998, Dallas voters authorized the issuance of $118 million in General Obligation Bonds for the City's share of the Trinity Parkway Corridor transportation improvements.
- Trinity River Parkway presentation presented to the Dallas City Council on Wednesday, October 1, 2003 (119 KB)
- Trinity Parkway Draft EIS and Public Hearing Update, presented to City Council April 6, 2005
- Trinity Parkway Draft Environmental Impact Statement and Public Hearing Update (Click on Projects/About the Projects button, then click on the Trinity Parkway button at left.)