South Carolina - Bridges

South Carolina - Bridges Exam: A Practical Study Guide

The South Carolina - Bridges exam tests the rules and the reference books behind the work. This guide lays out the job: the key facts from the official bulletin, what the exam covers, the books you need, sample questions with answers, and how to get ready. PSI gives the exam.

The South Carolina - Bridges Exam at a Glance

Here's the rundown from the official bulletin:

On exam day

• You must bring one valid, unexpired, signature-bearing photo ID (such as a state driver's license, state ID card, US passport, US military ID, US alien registration card, or Canadian government ID) matching the name you registered under.
• You should arrive at least 30 minutes before your appointment.
• The examinations are open book: candidates may bring the listed reference books, which must not be written in or contain additional loose or attached papers, and proctors inspect all books before and after the examination.
• Highlighting and underlining are allowed and only permanent tabs may be used, but books must otherwise be unmarked (not written in).
• You may bring a silent, battery-operated, non-programmable calculator without paper tape printing or an alphabetic keyboard.
• Only approved items may be taken into the examination room, and personal items such as electronic devices, writing devices, reading material, bags, food and drinks must be left in secure storage.

References you may bring

• Code of Federal Regulations - 29 CFR Part 1926 (OSHA), with latest available amendments
• Code of Federal Regulations - 29 CFR Part 1926 Selections by PSI, with latest available amendments
• Standard Specifications for Highway Construction (2007)
• Standard Specifications for Highway Construction Selections as of 2007 by PSI
• The Contractor's Guide to Quality Concrete Construction (2005, 3rd Edition)
• South Carolina 811 Excavator Manual (latest edition)

Scheduling, changes and retakes

• You may register and schedule online at https://test-takers.psiexams.com/sccon, available 24 hours a day, or by telephone with a PSI registrar at (855) 340-3701.
• Minimum qualifications must be met before registering, and the Registration Confirmation Notice issued after PSI approval is valid for 1 year or until an examination classification has been failed twice within the referenced time frame.
• You may cancel and reschedule without forfeiting your fee if your cancellation notice is received 2 days before the scheduled examination date, and voice mail or email is not an acceptable cancellation.
• If you fail to cancel in time, do not appear, arrive after the examination start time, or lack proper ID, your registration is invalid and you forfeit your examination fee.
• Your score is given immediately after the examination on screen and on a printed official report, with a diagnostic report of strengths and weaknesses if you do not pass.
• Except for Burglar and Fire Alarm, an examination may be taken only 2 times in a 12-month period and thereafter only once in six months, and a candidate who passes an exam may not take it again.
• After passing the required examinations, you submit the commercial license application with an experience affidavit documenting the required experience.

Source: Commercial Contractor Candidate Information Bulletin, Updated 8/27/2026. Check the bulletin before test day: fees and rules can change.

What the South Carolina - Bridges Exam Covers

The official content outline breaks the exam into 9 topics:

How to Get Ready for the South Carolina - Bridges Exam

Treat your reference books like your tools. On an open-book exam you don't need every rule memorized. You need to know which book holds it and where to find it.

Buy the books the bulletin lists, in the editions it names. An older or newer edition can put the answer on a different page, or change it.

Learn your way around each book before you study anything else. The table of contents and the index are your layout.

Highlight what you look up most. The exam facts above list the bulletin's rules on tabs and markings, so follow them exactly.

Put in the reps with timed practice exams. The clock trains you to find answers at the pace the real exam needs: about 3 minutes 36 seconds per question.

Measure twice. When you miss a practice question, find the section in your book, read it and mark it. Keep at it until you pass practice exams consistently.

The Books for the South Carolina - Bridges Exam

The bulletin lists the Bridges reference books.

Where to get them:

• OSHA 29 CFR 1926
• The Contractor's Guide to Quality Concrete Construction
• SC 811 Excavator Manual

Working the Exam on Test Day

Work the exam in two passes. On the first pass, answer everything you know and bookmark the rest. Every exam lets you come back to bookmarked questions. On the second pass, go back to your bookmarks and take them one at a time.

Don't get hung up on one question. You have 3 hours for 50 questions, which is about 3 minutes 36 seconds per question. Before you finish, make sure nothing is left blank.

Study Tips

On an open-book exam, the winners aren't the smartest people in the room — they're the fastest at finding answers. Buy the required book, practice with it open, and tab and highlight each section the first time a question sends you there. Learn the index and table of contents until you can land on any topic in seconds. That speed is what separates a pass from a fail.

On an open-book exam, work through every question once: answer the ones you know and skip the ones you don't. Then go back to the ones you flagged. You can bookmark questions for later review, just like on our exams — and don't sink too much time into any single question. The clock is still running.

Give yourself at least three to six weeks. Use your exam's candidate bulletin as your roadmap for what's tested, and spend your time on finding-it-fast skills over rote memorization. In practice, aim for three clean passes at 80% or higher — setting your practice bar above the real cut score gives you a comfortable margin on test day.

Practicing against a ticking clock is the best way to beat exam-clock anxiety. Use these timed tests to build your pacing, so you learn to move steadily and never burn too long on a single question. By test day, the format feels routine.

Sample South Carolina - Bridges Questions

These come from our practice question bank, each with its answer and the reference behind it.

Sample 1 — Concrete - Reinforcing Steel

Question: You are a commercial concrete contractor managing a large warehouse slab pour. The pour runs late, and the crew plans to resume the next morning. At the stopping point, there will be no aggregate interlock across the joint. What load transfer device is generally recommended, and what is the typical diameter relative to slab thickness?

• A. Keyed joints at 1/3 slab thickness
• B. Smooth dowel bars at 1/4 slab thickness
• C. Smooth dowel bars at 1/8 slab thickness
• D. Deformed tie bars at 1/4 slab thickness

Correct Answer: C

At a construction joint, there is no aggregate interlock, so a load transfer device is needed. Dowel bars should generally have a diameter of 1/8 the slab thickness and be spaced at 12 in. (300 mm) on center. Keyed joints are no longer recommended because unreinforced joints lose contact when the joint opens due to drying shrinkage (ACI 302.1R).

Reference: Contractor's Guide to Quality Concrete Construction (4th ed.), Chapter 8 – Joints and Reinforcement for Slabs-on-Ground, Page 125

Sample 2 — Safety - Code of Federal Regulations

Question: You are the contractor on a bridge deck hydrodemolition and rivet-busting operation. Feasible administrative and engineering controls have already been applied, and hearing protection has been issued because sound levels still exceed the permissible noise exposure table. The rivet busters also produce impulsive, impact-type noise. What peak sound pressure level must employee exposure to that impulsive or impact noise not exceed?

• A. 115 dB
• B. 125 dB
• C. 140 dB
• D. 160 dB

Correct Answer: C

Per 29 CFR 1926.52(e), exposure to impulsive or impact noise should not exceed 140 dB peak sound pressure level. The 115 dBA figure in option A is the slow-response sound level associated with the shortest (1/4 hour or less) continuous-exposure duration in Table D-2 under §1926.52(a), not the impulse-noise ceiling. Note also that §1926.52(b) requires feasible administrative or engineering controls to be used first, with PPE provided when those controls fail to bring levels within the table.

Reference: OSHA 29 CFR 1926, §1926.52(e)

Sample 3 — Concrete Formwork

Question: What percentage range of the total cost of a concrete structure is typically attributed to formwork?

• A. 35 to 60 percent
• B. 10 to 25 percent
• C. 25 to 35 percent
• D. 60 to 80 percent

Correct Answer: A

According to the Contractor's Guide to Quality Concrete Construction, formwork costs range from 35 to 60 percent of the cost of a concrete structure, making it one of the most significant cost components in concrete construction.

Reference: Contractor's Guide to Quality Concrete Construction (4th ed.), Page 54

Sample 4 — Paving

Question: A small fixed-form paving area has been approved on your project and you want to use built-up forms. What is the maximum total project area of pavement of that specified thickness that permits built-up forms, and the maximum amount the build-up may extend the form depth?

• A. 1,000 square yards; 10 percent
• B. 5,000 square yards; 25 percent
• C. 3,000 square yards; 25 percent
• D. 3,000 square yards; 50 percent

Correct Answer: C

SCDOT Subsection 501.3.8 prohibits built-up forms except where the total area of pavement of any specified thickness on the project is less than 3,000 square yards, and then the build-up may extend the form depth up to 25 percent. The build-up must be securely attached to the bottom of the form.

Reference: SCDOT Standard Specifications for Highway Construction, Section 501, Pages 258-259

Why Practice Online Instead of With a PDF

A PDF is like reading about a job instead of doing it. Our practice exams are timed and on a screen, so you practice finding answers with the clock running. Each attempt draws a new set of questions from our bank, and your results break your score down by topic so you know where to put in more work.

Get Started

Take the free South Carolina - Bridges practice exam to see where you stand, then put your time into the topics that need it. For the official rules, read the exam bulletin, and see the licensing board's website.