North Tarrant Expressway (NTE) Design-Build Project in Tarrant County, Texas

IEA has two separate contracts on this $2.0 Billion Design/Build Project. One contract with AECOM for design services and the other contract with Blue Bonnet Constructors for design services during construction.

Design Contract:

DART/TRE and UPRR Railroads:

  1. IEA was responsible for preparing the Exhibit A and the Plans Specs & Estimates (PS&E) for the TRE / DART Railroad crossing over IH 820 as part of the construction of the North Tarrant Expressway Design/Build Project. The project included 3,477 linear feet of track work for original and shoofly lines. The proposed highway improvements required the existing 234 ft. DART bridge to be removed and replaced with two new longer bridges to accommodate the widened highway. One bridge accommodated the main line track and the other was used for the proposed SW2NE Corridor station siding and also served as the shoofly bridge while the existing bridge was removed. Both of the new ballasted deck through plate girder bridges were designed and will be constructed on a 30 degree skew with the roadway. The shoofly bridge was a 377 ft. long, 4-span, 107’-75’-75’-120’ unit and the replacement bridge was a 374ft. long, 4-span, 107’-75’-75’-117’ unit. The Bridges were designed to accommodate Coopers E80 Class I railroad loads and were designed to meet the latest DART, UPRR and AREMA requirements. The total weight of the structural steel for both bridges is 3,200,000 lbs.

  2. IEA was responsible for preparing Exhibit A and the Plans, Specs & Estimates (PS&E) for the Union Pacific Railroad crossing over IH 820 as part of the construction of the North Tarrant Expressway Design/Build Project. The project included 3,239 linear feet of track work for original and shoofly lines. The proposed highway improvements required the existing 234 ft. UPRR Bridge to be removed and replaced with two new longer bridges to accommodate the widened highway. One bridge accommodated the main line track and was on a 2 degree curve. The other bridge was designed as the shoofly bridge while the existing bridge was removed and will serve as a permanent structure to be used by the UPRR in the future. Both of the new ballasted deck through plate girder bridges were designed and will be built on a 30 degree skew with the roadway. The shoofly bridge has a tangent alignment and is a 497 ft. long, 4-span, 106’-128’-134’-129’ unit. The main line bridge is on a 2 degree curved alignment and is a 499 ft. long, 4-span, 103’-127’-140’-129’ unit. Both Bridges were designed to accommodate Coopers E80 Class I railroad loads and were designed to meet the latest UPRR and AREMA requirements. The total weight of the structural steel for both bridges is approximately 4,700,00 lbs.
    Construction Services Contract: IEA is providing design services during construction for the Design/Build entity, Blue Bonnet Constructors (BBC). IEA is responsible for providing structural, roadway, drainage and traffic engineering services for design changes during construction.