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Lyndon B Johnson (LBJ) Expressway, Texas, USA

USA Projects

As one of the most complex highway projects of its kind in the country, the LBJ Expressway delivered long-awaited improvements - relieving traffic congestion for millions of North Texas commuters each year through its innovative managed lanes approach. The current capacity will be nearly doubled with the creation of up to six new express managed lanes on IH-635 and four on portions of IH-35.

TECHNICAL CHARACTERISTICS

CLIENT

Texas Department of Transportation

VALUE

£1.98bn

DATES

Design and Construction: 2010 – 2015
Operation and Maintenance: 2015 – 2068

CONTRACT TYPE

PPP

The project is the largest PPP of this nature in the history of the United States. Cintra led the financing of the project, with construction capability provided by Ferrovial Agroman, in JV with our sister company, Webber. We developed an innovative, multi-level highway system – a new concept consisting of the refurbishment of existing highway and the construction of new free-flow, tolled lanes.

The scope of the project includes the construction of 21.4km of the new multi-level highway, six managed lanes within the footprint of the existing highway and reconstruction of over 21.4km of four-lane highway in each direction. We achieved minimal disruption to traffic with at least four lanes open in each direction at all times during works. Construction commenced in 2010 and was completed in 2015, three months ahead of schedule

We delivered innovative design solutions that minimised the need for additional land-take to accommodate the new running lanes, making efficient use of the existing footprint. During design development, we also maximised opportunities for onsite manufacturing (OSM) solutions to deliver precast elements and accelerate the programme by three months.

ADDED VALUE:

  • We optimised the Dallas North Tollway crossing design during procurement. This eliminated the need for a tunnel structure, which helped reduce the consortium’s public funds subsidy request by 29%
  • We donated over 103,000m3 of fill to the City of Dallas, which was reused to convert brownfield land into a new football complex, saving the city over £800,000
  • The phased opening strategy and traffic management measurements provided £155m client savings
  • The Federal Highways Administration has shared our LBJ Express Project Management Plan as best practice across its supply chain

”This was a fantastic achievement that clearly demonstrates what can be achieved by working in a collaborative team delivering solutions that meets the client’s value criteria. We optimised construction sequencing and logistics, explored alternative methods; challenged constraints; assumptions and solutions in design, and created a programme saving of three months. Our proven processes and procedures are structured to proactively manage risks, change, interfaces and deliver an optimised design.”

Ignacio Navarro, Engineering Director, Ferrovial Agroman.

AT A GLANCE

  • 21.4km of new multi-level highway works
  • 6 managed toll lanes utilising a stacked multi-level highway arrangement
  • 8 main lanes online widening with additional shoulders on outside
  • 90+ bridges including multiple three level interchanges
  • 330km of precast beams installed during construction
  • 52 years concession

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