The Trinity River Corridor Project has been billed as a threefold venture: one that seeks to protect downtown Dallas against future flooding, to improve transportation through the congested downtown district, and to provide a place of relaxation and play for downtown residents who currently have limited outdoor recreational opportunities.
Flood protection Although rare, downtown Dallas has
suffered severe flooding and the Trinity River Project has enlisted local and government officials for advice on extending and improving the current levee system protecting the downtown area. Current plans to improve the existing levees are part of what is known as the
Dallas Floodway Extension project. They entail extending two existing levees and raising two others, all adjacent to the downtown Dallas area. A second component of Dallas' efforts for increased flood protection involves the construction of a series of
wetlands within the Trinity basin; these wetlands are being constructed to divert excess water away from the Trinity and absorb it outside the river channel, further reducing flood danger. Two sections of
wetlands are under construction, an
Upper Chain and a
Lower Chain, with the latter completed in 2008.
Transportation The
Trinity Parkway, the most controversial portion of the project, was a proposed nine-mile (14 km) parkway located inside the river levees but above the floodplain; it was to provide an alternate route for Dallas residents and business travelers, and relieve intense Dallas highway traffic. Under the direction of Dallas officials, the
North Texas Tollway Authority (
NTTA), and the
Texas Department of Transportation (
TxDOT), the tollway was to have been constructed on the side of the Trinity closest to downtown. It would have accommodated four lanes of traffic, with some sections possibly increased to six lanes; the parkway was to cost approximately $1.8 billion.
Recreation The Trinity River Project incorporates several new recreational developments aimed at improving quality of life for downtown Dallas residents and visitors. These include an
Audubon center (opened in October 2008 at the site of an illegal landfill in South Dallas), a set of new trails for biking, hiking, and walking, parks, a standing wave, sports complexes, a horse park, and two manmade lakes. These amenities are set to be added to various areas adjacent to downtown Dallas. The two lakes, named the
Urban Lake and the
Natural Lake by project officials, are set to be built in line with the Dallas cityscape so that cars crossing the aforementioned bridges pass over the lakes before entering downtown. The project also contains a impact zone for economic development along the Trinity River. It will include retail, restaurants, residential developments, and offices, and also attract business into the city. Currently there exists a broad section of developed land between the skyscrapers of downtown and the water's edge of the Trinity and the two lakes. Recently, Dallas city hall has put forth new zoning laws concerning this area; this new legislation redefines the types of structures that can be built in this area and extends downtown's sphere of influence with its model of highrise and high density construction out to the Trinity river. == Trinity Parkway Toll Road Criticism ==