Trenchless Technology Center

SAULT: Selection Assistant for Utility Locating Technologies

The Selection Assistant for Utility Locating Technologies (SAULT) is intended to help identify effective utility locating methods for particular site or project environments. Developed with the support of the second Strategic Highway Research Program (SHRP 2), it is part of SHRP 2 Renewal Project R01: Encouraging Innovation in Locating and Characterizing Underground Utilities. The project explored underground utility locating practices, examined current and emerging technologies, and identified potential areas for improvement and subsequent research. A report documenting this research and its findings was published by the Transportation Research Board.

SAULT was developed by the Trenchless Technology Center at Louisiana Tech University. The development team members were Erez Allouche, Joseph Berchmans, John Matthews, Jadranka Simicevic, and Ray Sterling. The expert contributors were Jim Anspach, Paul Scott, and Gary Young.


SHRP 2 is a focused, time-constrained, management-driven program designed to complement existing highway research programs. It focuses on applied research in four areas: Safety, to prevent or reduce the severity of highway crashes by understanding driver behavior; Renewal, to address the aging infrastructure through rapid design and construction methods that cause minimal disruptions and produce lasting facilities; Reliability, to reduce congestion through incident reduction, management, response, and mitigation; and Capacity, to integrate mobility, economic, environmental, and community needs in the planning and designing of new transportation capacity.

SHRP 2 was authorized by Congress in August 2005 as part of the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU). The 7-year program, which began work in 2006, is managed by the Transportation Research Board (TRB) on behalf of the National Research Council (NRC). SHRP 2 is conducted under a memorandum of understanding among the American Association of State Highway and Transportation Officials, the Federal Highway Administration, and the National Academy of Sciences, parent organization of TRB and NRC. The program provides for competitive, merit-based selection of research contractors; independent research project oversight; and dissemination of research results.

For more information about SHRP 2 and its research projects, please visit
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The Transportation Research Board of the National Academies, the National Research Council, and the sponsors of the second Strategic Highway Research Program do not endorse products or manufacturers. Trade or manufacturers names appear herein solely because they are considered essential to the object of the website.

This software is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences or the Transportation Research Board (collectively “TRB”) be liable for any loss or damage caused by the installation or operation of this product. TRB makes no representation or warranty of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose, and shall not in any case be liable for any consequential or special damages.