Lyndon B. Johnson (IH 635) Corridor Design-Build Project in Dallas, Texas

IEA is providing services for this $2.5 Billion Design/Build project on two separate contracts.

1. IEA is providing design services during construction for Design/Build entity, Trinity Infrastructure Group (Ferrovial / W. W. Weber JV).  IEA is responsible for providing structural, roadway, drainage, and traffic engineering services.

Traffic Engineering Services:  IEA developed the Traffic Control Plans for the construction of Water and Wasterwater utility features as part of the LBJ (IH 635) Project. Construction spread over various locations on multiple local streets and major arterials in the City of Dallas. Development of plans involved extensive coordination with the City of Dallas traffic staff, contractors, adjacent land owners and Dallas Fire department. Proposed traffic control involved multiple stages, night-time closures, full street closures, two-lane one way operations etc. All the concepts were developed based on guidelines in TxMUTCD, TxDOT standards and City of Dallas ‘Traffic Barricade Manual’. 

2.  IEA is working on the Traffic Control Plan (TCP) for the LBJ (IH 635) corridor, construction of which is currently underway. This corridor is proposed to have General Purpose Lanes, Managed Toll Lanes and a Frontage Road. The phasing was developed taking into consideration various Comprehensive Development Agreement (CDA) guidelines, one of which is to maintain 4 lanes of mainlane traffic during the entire stretch of construction. This project involved other multiple challenges due to the proposed configuration of depressed managed toll lanes with cantilevered sections of general purpose lanes along a significant portion of the corridor. Texas Department of Transportation (TxDOT) traffic control standards and Texas Manual on Uniform Traffic Control Devices (TxMUTCD) were used as a guide for developing the TCP.