CTCI Pass Rate 2026: What the Data Shows

Why There Is No Published Pass Rate

If you searched for the Concrete Transportation Construction Inspector pass rate, you probably hoped for a clean number: "X percent of candidates pass." Here is the honest answer: the American Concrete Institute (ACI) does not publish a national pass rate for this credential in the sources that define the program. The examinations are administered by ACI-approved examiners and proctors through sponsoring groups and ACI resource centers, which means results are generated across many local events rather than reported as a single public statistic.

That matters because pass-rate figures floating around the internet are often recycled from other credentials that happen to share the same acronym, or they are simply invented. On this site, "CTCI" means exactly the ACI Concrete Transportation Construction Inspector credential, and we will not attach an unsourced percentage to it. What we can do is something more useful: analyze the exam's structure, eligibility rules, and retake mechanics to show you where candidates realistically succeed or fail. For a broader look at difficulty, see our complete difficulty guide for the CTCI exam.

What the Structure Tells Us About Difficulty

Even without a published statistic, the program's design reveals a lot about how pass outcomes are determined. These are the verifiable facts:

Note that these are approximate component counts. The credential is not a single 100-question exam, and you should not prepare for it as one. Each component stands alone, and a strong result on one does not rescue a weak result on the other. For the exact threshold mechanics, our CTCI passing score guide walks through what 70% separately really means in practice.

Open Book Does Not Mean Easy

An open-book format changes what the exam measures. Instead of testing whether you memorized a tolerance value, it tests whether you can locate the right provision in the right document under time pressure. With roughly 80 questions in 3 hours, you have a little over two minutes per question on the inspection exam. A candidate who has never tabbed their references will burn that time flipping pages, even if they understand the underlying concrete practice well.

The Two-Exam, One-Year Trap

The single most important structural feature affecting outcomes is the linkage between the two exams. You must achieve at least 70% on each, and you must pass both within one year of each other. If you pass one and let the year lapse without passing the other, both examinations must be retaken. This is where otherwise capable candidates quietly lose ground.

Consider the common failure patterns this rule creates:

• Deferring the plans-reading exam. Because it is shorter (about 20 questions, 1 hour), candidates treat it as an afterthought, pass the inspection exam, and then let the clock run.
• Strong inspection score, weak plans reading. Field-experienced inspectors often know concrete practice cold but have not read structural drawings recently. Missing 70% on the plans-reading exam means a retest arranged through your sponsoring group.
• Scheduling collisions. Local events are not offered every week, so a failed attempt can push your retest far enough out to threaten the one-year window.

Check upcoming local sessions early using our guide to CTCI exam dates and scheduling, and plan both components with the one-year linkage in mind.

Where the Workload Concentrates

ACI's Job Task Analysis for this credential lists 22 content areas: 21 reference and knowledge-section headings plus the Plans-Reading Exam section. These are unweighted source headings, not 22 percentage-weighted domains, so ACI does not tell you that one area is worth a fixed share of questions. That ambiguity is itself a difficulty factor: you cannot safely skip a section on the assumption that it counts for little.

The remaining areas round out the scope: ACI Concrete Terminology, ACI 213R (structural lightweight-aggregate concrete), ACI 230.1R (soil cement), ACI 347 (formwork), ACI MNL-2 (Manual of Concrete Inspection), and the Plans-Reading Exam. For the full breakdown of each, read our complete guide to all 22 CTCI content areas.

Prerequisites as a Built-In Filter

Many certification exams admit anyone who pays the fee. This one does not, and that shapes who sits for the test. To be eligible, candidates need one of the following experience paths:

1. At least two years of college or technical school earning a minimum of 60 credit hours, plus two years of relevant work experience.
2. A high-school diploma or equivalent plus three years of relevant work experience.
3. Five years of relevant work experience.

Employer-verified experience must include inspection decision-making, compliance evaluation, and documentation and reporting. On top of that, candidates must hold current ACI Concrete Field Testing Technician-Grade I certification, or have previously held it and pass its current written examination within one year of the first Inspector examination passed.

The practical effect is that the exam population is mostly working field professionals who already hold a hands-on testing credential. That self-selection is one reason any raw national pass rate would be hard to compare against open-enrollment exams. It also means the experience you bring is an asset: candidates who have actually made inspection calls and written reports tend to find scenario questions more intuitive. Review the full eligibility picture in our CTCI requirements guide.

What a Retake Costs You

Because retesting is arranged through the sponsoring group, the cost of a failed attempt depends on your local provider. Fees are set by providers, not by a single national tariff. Two examples from current listings illustrate the range of packaging:

Using the Mid-Atlantic example, a single failed component means paying $315 again to retest that exam, while a lapse of the one-year window means paying for both. The financial stakes make a strong case for passing both components within a single planned window. See our full CTCI certification cost breakdown for how these packages compare, and weigh the investment using our ROI analysis of the CTCI certification.

Sequencing the 22 Content Areas

Since outcomes hinge on reference fluency and breadth, a sequenced plan beats random review. The timeline below ties each stretch to specific documents rather than generic study habits. It is a template you can compress or stretch depending on your experience.

Schedule the plans-reading work early enough that you can sit that exam close to the inspection exam, protecting the one-year window. For a deeper walkthrough, see our CTCI study guide for passing on your first attempt, and keep our one-page CTCI cheat sheet nearby for quick review.

How to Read Pass-Rate Claims

Since no official national figure exists, here is a short checklist for evaluating any pass-rate claim you encounter:

• Check the credential name. Confirm the source is discussing the ACI Concrete Transportation Construction Inspector credential and not another certification that shares the abbreviation.
• Look for a named source. A legitimate statistic cites ACI or a specific sponsoring group, with a date and a sample description.
• Separate component results. A figure that blends the inspection and plans-reading exams, or one that ignores the one-year linkage, is describing something the program does not actually measure.
• Remember local variation. Sponsoring groups run their own events, so a single group's anecdote does not represent every candidate.

The practical takeaway is to stop chasing a number and start building the skills the exam rewards: fast reference lookup, solid grounding across all 22 content areas, and disciplined scheduling of both components. Test your readiness with realistic questions on our CTCI practice test platform, and explore career context in our CTCI salary guide and overview of CTCI jobs. New to the credential itself? Start with what CTCI certification is.

Frequently Asked Questions