DOT QC plan documentation requirements for federal-aid road construction are detailed and enforceable. An inadequate QC plan — or a plan that exists on paper but isn't followed in the field — can result in withholding of federal-aid funds, audit findings, and project delays. Here is what the plan must contain and what records must be kept.
What must a DOT QC plan include for road construction?
A DOT QC plan must include an organizational chart, inspection frequencies by work type, test methods and reference standards (AASHTO, ASTM), equipment calibration schedules, a nonconformance reporting procedure, daily QC report format, and materials acceptance procedure. Required for most federal-aid projects over $1M.
The QC plan requirement is triggered by project type, funding source, and dollar threshold:
FHWA requires a QC plan on all NHS projects. For non-NHS federal-aid projects, the threshold varies by state DOT but is typically $1 million construction value. The project special provisions will specify whether a QC plan is required and reference the applicable specification section.
State DOTs have varying requirements for purely state-funded projects. Some require QC plans for all projects over $500,000; others only require them for specific work types (pavement, bridge, specialty work). Check the project specifications — do not assume a state project is exempt.
The QC plan must be submitted to and accepted by the DOT resident engineer before any construction begins. A QC plan submitted after work starts will typically be rejected, and the contractor may be required to re-inspect and re-test work performed without an accepted QC plan in place.
Shows the QC Manager, QC inspectors, laboratory technicians, and their reporting relationships. The QC Manager must have authority to stop work — this must be documented. Certifications and qualifications for each role must be listed.
For every major work type (earthwork, base course, surface course, drainage), specifies how often inspections and tests will be performed. Frequencies must meet or exceed specification minimums. Example: one compaction test per 500 linear feet per lift for embankment.
For each test type, specifies the applicable AASHTO, ASTM, or state standard. Example: density testing — AASHTO T310 nuclear gauge method; proctor reference — AASHTO T180 modified proctor.
Lists all testing equipment (nuclear gauges, levels, total stations, GPS rovers, sieves, scales) with calibration frequency and the accredited laboratory used for calibration. Calibration records must be maintained on site.
Describes what happens when a test fails or a QC deficiency is identified: who is notified, how it is documented, what corrective action process is followed, and how re-testing is conducted and recorded.
Specifies the format and content of daily QC reports. Must include: date, weather, workforce count, work performed, inspections conducted, tests performed with results, materials received with COC references, nonconformances identified, and QC manager signature.
Describes how materials are accepted on the project: what documentation is required (certifications, certified test reports, certificates of compliance), how materials are identified and tracked from delivery through placement.
Describes how subcontractors are incorporated into the QC program. The prime contractor's QC plan applies to all subcontractors. The prime QC manager has oversight responsibility for subcontractor QC performance.
The QC plan describes what documentation will be produced. These are the document types that must actually exist in the project QC files:
Federal-aid project QC records must be retained for a minimum of 10 years after project completion. Many state DOTs require 15 years. The key requirement that catches contractors off guard: records must be available for FHWA audit review within 24 hours of request.
This means the records must be organized, searchable, and accessible — not boxed in a storage unit somewhere. FHWA auditors conducting a materials compliance audit need to be able to pull the compaction test logs for a specific station range, the corresponding daily QC report, and the proctor test that was used — quickly.
FHWA formally accepted digital QC records in a 2019 guidance memo. Digital records are acceptable for federal-aid projects when the following conditions are met:
The Sitemark road and highway QC platform produces digitally-signed, timestamped records with a complete audit trail — meeting all FHWA requirements for digital QC documentation. See the road QC report documentation for format details.
Sitemark generates tamper-evident, timestamped QC records that meet FHWA digital record requirements. Complete audit trail, 10+ year retention, available within 24 hours.
Start Free Trial →