PRELIMINARY draft. Content from SCDOT LRGD 2019 course drafts. Not sealed PDH. Accuracy locks: EOR ≠ QC; φc optional per §6.11.2.2 (no invented TN01 body); LRFR first per §6.9.3.
Design & Load RatingSCDOTDraftOnline self-study
SCDOT LRGD & AASHTO MBE Practice
4 PDH · Course no. SC-LR-LRGD · Instructor: Michael Craig, PE
About the instructor
Michael Craig, PE is Senior Vice President and Southeast Director at Strinteg Corporation, leading bridge inspection and structural engineering across eight states and Puerto Rico. In 27+ years he has inspected over 4,000 structures and completed 3,000+ load ratings and 160+ load tests. He has managed repair and preservation design for complex bridges, including cable-stayed bridges. He holds PE licenses in twelve states, DC and Puerto Rico, SPRAT Level 1, and FAA Part 107 credentials.
LRGD 2019 agency layer on the AASHTO MBE: purpose and definitions, PE/QC independence, when to re-rate, method selection (LRFR first), live loads, LRSF/QC, and posting — with BIGD handoffs for inspection-driven requests. Companion to BR-101 Load Rating Fundamentals.
Learning objectives
- Restate LRGD purpose/scope vs MBE and NBIS
- Apply Inventory / Operating / Rating Factor definitions (§1.3.1)
- Lock EOR ≠ QC Engineer (§3.2) and Technical Notes gate (§1.6)
- Decide when reconstruction or inspection findings require a new rating (§4.3)
- Select methods per §6.9.3 (LRFR first; timber/masonry ASR alternative)
- Apply posting practice per §19.5 (2019 text) and CF Posting handoff (BIGD §7.2.7.1.1)
Outline
- Lesson 1 — Purpose, PE quals, when to rate Ready (~20+ min careful read · expanded)
- Lesson 2 — Methods, live loads & factors Ready (~20+ min careful read · expanded)
- Lesson 3 — QC/QA & LRSF Coming soon
- Lesson 4 — Posting & handoffs Coming soon
- Final quiz — 15 questions, 70% to pass