The I-35 NEX Central project consists of construction of approximately 9.5 miles of elevated, non-tolled lanes from I-410 N to FM 3009. The elevated lanes will provide one high occupancy vehicle (HOV) lane and two general purpose lanes in each direction. The I-35 elevated lanes will provide direct connections to I-410 South, I-410 North, and Loop 1604 West. The project also includes incidental construction necessary to transition the elevated lanes and connectors with the existing highways including revisions to ramps and frontage roads and accommodations for drainage, utilities, signs, and other highway improvements.
The majority of construction will occur on weeknights to avoid traffic disruptions.
The I-35 NEX project was broken into manageable break-out project sections – Central, South, and North. The Central project limits begin at I-410 N and extend north to FM 3009, approximately 9.5 miles. In August of 2021, TxDOT issued a conditional award of a design-build contract to Alamo NEX Construction, LLC (ANC) for the I-35 NEX Central Project work.
"Design-build" is a method to deliver a project in which the design and construction services are contracted by a single entity known as the design-builder or design-build contractor. Design-build projects are used to minimize risks for the project owner and to reduce the delivery schedule by overlapping the design phase and construction phases of a project.
This project is being completed through a partnership between TxDOT, and Alamo NEX Construction, a joint venture between Ferrovial Construction and Webber. This project was identified by the Texas Clear Lanes Initiative.
An HOV lane is a special lane reserved for carpools, buses, motorcycles, or emergency response vehicles. These lanes enable vehicles to bypass the traffic in the adjacent, unrestricted mainlanes. HOV lanes reduce congestion, promote mass transit services, improve road safety, and establish corridor reliability.