Before reinforcement disappears behind concrete or a trench is backfilled, the project team needs a reliable way to confirm that the next stage is ready. Hold points and witness points create those checkpoints. Understanding their different purposes helps site engineers protect quality and plan the work.
This guide explains the distinction using Australian road-authority specifications as examples. The requirements for a particular project come from its contract, applicable specifications and inspection and test plans (ITPs).
Hold points: obtain release before proceeding
A hold point stops the affected work process until the nominated authority releases it. Queensland Transport and Main Roads’ MRTS50 requires written release from the Administrator, supported by evidence that the contractor has completed the relevant inspections and testing. A completed internal checklist does not replace that release where the contract requires it. [1]
Establish who can release each point and how the decision will be recorded before the activity reaches site. A vague instruction to “get quality approval” leaves crews without a clear decision-maker.
Witness points: provide the opportunity to attend
A witness point requires advance notification so the nominated party can choose to observe an activity. Transport for NSW’s D&C Q6 describes this opportunity for the Principal. Whether work can continue without attendance depends on the applicable requirements and instructions; it is not a reason to bypass a separate hold point. [2]
| Checkpoint | Purpose | Question before continuing |
|---|---|---|
| Hold point | Require release at a nominated stage. | Has the authorised person released this point in the required form? |
| Witness point | Allow a nominated party to observe after notice. | Have the notification and attendance conditions been satisfied? |
Put the requirements into the ITP
Start with the specification for the actual activity. MRTS01 explains that additional quality requirements sit in the relevant technical specification, where checkpoints are identified and summarised. Reading the general quality specification alone can therefore miss an activity-specific requirement. [4]
An ITP should connect the work step with acceptance criteria, inspection or test methods, frequency, responsibilities and records. Main Roads WA’s Specification 201 specifically identifies these inspection-planning elements, including hold and witness points, and requires ITPs to be available for review before use. [3]
For practical use, identify the lot or work area and the applicable drawing revision. Make notification responsibilities and release authority easy to find. The supervisor, subcontractor and quality representative should be able to identify the same checkpoint without interpreting different versions of the plan.
Do not assume a universal notice period
The timing rules are not interchangeable. MRTS50 allows at least one working day for the Administrator’s response after the specified hold-point information is provided. Main Roads WA’s Specification 201 calls for a written release request and supporting results at least 24 hours ahead, or another period stated in the relevant specification. Check the contract wording when programming the inspection. [1] [3]
Example: a pre-pour hold point
Consider an illustrative retaining-wall pour whose approved ITP includes a pre-pour hold point. Before requesting inspection, the site team checks the evidence required by that ITP: this might include reinforcement and embedment checks, survey records, the approved mix submission and confirmation that outstanding issues have been resolved.
The team submits the release request within the contractual timeframe, makes the work accessible for inspection and closes any comments. The authorised release is then linked to the correct lot and communicated to the people directing the pour. This is an example of workflow, rather than a universal concrete inspection checklist.
If the inspected scope changes afterwards, such as a revised reinforcement detail or a different pour area, confirm whether reassessment or reinspection is required. Keep the release tied to the work that was actually reviewed.
Make the release record traceable
A useful release pack lets another person reconstruct the decision. Link the inspection request, applicable ITP, results, drawing revision, relevant photographs and release record. Identify unresolved issues and their disposition clearly. NSW’s Q6 describes quality records as evidence of conformity or effective operation of the quality system; WA’s specification also connects release requests with supporting conformance evidence. [2] [3]
Track approaching checkpoints in the look-ahead programme with a named owner and notification date. Confirm inspection arrangements early, and provide a complete evidence pack. This gives reviewers time to respond and reduces the chance that a ready crew is waiting for missing paperwork.
Keep quality release, design approvals and safety permits distinct. Each answers a different readiness question. Clear records and timely communication help the next stage start with an understood scope and an identifiable authorisation.
Sources
[1] Queensland Transport and Main Roads: MRTS50 — Specific Quality System Requirements, March 2025, clauses 8.3.2–8.3.3.
[2] Transport for NSW: D&C Q6 — Quality Management (Major Works), definitions of witness points and quality records.
[3] Main Roads Western Australia: Specification 201 — Quality Management, issued 13 October 2025, clauses 201.06.02–201.06.03.
[4] Queensland Transport and Main Roads: MRTS01 — Introduction to Technical Specifications, March 2025, clauses 5.1–5.2.
These documents are contract specifications. Check the editions, amendments and project requirements incorporated into your own contract. Sources checked 26 October 2026. Cover photo: Patrick Moes / U.S. Army Corps of Engineers, St. Paul District (original photograph; public domain). Photographs show international construction examples. The appearance of U.S. Department of War (DoW) visual information does not imply or constitute DoW endorsement.