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Unlike others, VERTEX provides forensic consulting alongside traditional AEC services which allows for a 360 degree view of your project.

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Abigail (Abby) Niedert PE

Director, Forensics

Abby specializes in investigation and resolution of disputes, primarily related to the construction and utility industries. Abby also provides project monitoring and analysis services related to on-going construction projects.

Abby performs accounting, cost overrun, schedule delay, and productivity analyses, including evaluating issues related to contract disputes, breach of contract, delay claims, cost overruns, and material and labor escalation. She has experience performing Critical Path Method (CPM) analyses to forensically determine the critical path, magnitude and sources of project delay.

Abby assists owners, general contractors, subcontractors, insurance companies, engineers, architects, and utilities. She performs schedule and cost analyses on several types of projects including retail buildings, residential buildings, hotels, transportation centers, power plants, academic buildings, and more. Abby has assisted in the preparation of expert and rebuttal reports, testimony, exhibits, and demonstratives, and has provided support during mediation, deposition, arbitration, and trial.

Education & Certification

B.S. Civil Engineering – University of Illinois at Urbana-Champaign
Registered Professional Engineer (PE) – Illinois


American Bar Association (ABA)
American Society of Civil Engineers (ASCE)
Professional Women in Construction (PWC)

Expert Witness Services

Damages, Construction Cost Estimating