The Case File
Every episode comes with a Case File & Field Briefing in four parts, built from primary engineering records.
Executive summary, US Census & freight corridor profile, and historical backdrop.
Free summary on every episode page
Deep-dive engineering mechanics, load transfer math, and downloadable 4K redrawn telemetry charts & cross-section schematics.
5 technical seminar/assessment questions with a complete engineering answer key.
Clickable primary source ledger: full DOT field-test PDFs, DOIs, NBI Bridge Structure IDs, FARS crash baselines, and USAspending federal grant obligations.
Solo Investigator
$9/mo ยท $79/yr
Full personal access to every Case File & Field Briefing. Licensed for a single individual reader.
Department / Classroom License
$299/yr
Every Case File, with rights to print, distribute, and project for up to 100 students or team members, plus an itemized PDF tax invoice for P-Card reimbursement.