South Carolina has exactly one toll road. Just one. So if you’ve been picturing a maze of E-ZPass gantries and confusing toll apps, you can relax right now.
That single road is the Southern Connector (I-185) near Greenville, and once you understand how it works, paying tolls here is genuinely stress-free. Here’s everything you need to know before you hit the road.
- The Southern Connector: SC's Only Toll Road
- How Much Do Tolls Cost in South Carolina?
- What Is the Palmetto Pass (PalPass)?
- Does Your Out-of-State Transponder Work in SC?
- What Happens If You Miss a Toll?
- Renting a Car in South Carolina? Read This First
- What's Coming Next: SC Toll Expansion
- Quick Tips for a Smooth Toll Experience in SC
- Your Last Exit Before the Toll Booth
The Southern Connector: SC’s Only Toll Road
The Southern Connector is a 16-mile spur route that connects Interstate 85 to Interstate 385 south of Greenville. It was built to ease congestion at the notoriously busy I-85/I-385 interchange, and it does the job well.
The road is managed by the Connector 2000 Association under a long-term agreement with the South Carolina Department of Transportation (SCDOT). It runs entirely on toll revenue, which is why the payment system is a bit more self-contained than what you’d find in larger states.
Where Are the Toll Plazas?
The Southern Connector uses a closed-access system with two main plazas and two smaller ramp plazas:
- West Plaza near the I-85 terminus
- East Plaza near the I-385 terminus
- SC Route 20 (Piedmont Highway) ramp plaza (unattended)
- Fork Shoals Road ramp plaza (unattended)
The two ramp plazas are unattended, which means exact change is required if you pay cash there. No attendant, no change given. Keep that in mind before you exit.
How Much Do Tolls Cost in South Carolina?
Toll rates on the Southern Connector depend on your vehicle’s axle count. The rates below took effect on January 2, 2024, and remain in place for 2026.
Cash and Credit Card Rates (Mainline Plazas)
| Vehicle Class | Axle Count | Per Plaza | Full Trip Total |
|---|---|---|---|
| Passenger Vehicle | 2 | $2.25 | $4.50 |
| Small Truck or RV | 3 | $4.80 | $9.60 |
| Medium Truck | 4 | $6.40 | $12.80 |
| Heavy Commercial | 5 | $8.00 | $16.00 |
| Oversized or Multi-Axle | 6+ | $9.60 | $19.20 |
Credit cards are accepted at the staffed mainline plazas. Cash is accepted everywhere except the unattended ramp plazas, where you must use exact change.
Ramp Plaza Rates (Exact Change Required)
| Location | Cash Rate |
|---|---|
| SC Route 20 (Piedmont Hwy) | $1.50 |
| Fork Shoals Road | $1.50 |
These rates are flat for all vehicle types at the ramp plazas, which keeps things simple even if the “exact change only” rule catches people off guard.
What Is the Palmetto Pass (PalPass)?
The Palmetto Pass, commonly called the PalPass, is South Carolina’s electronic toll transponder. It’s a small RFID sticker tag you mount to your windshield, and it automatically deducts your toll as you pass through the designated lanes.
Using a PalPass means you never have to stop or slow to a crawl at the booth. You can pass through at speeds of up to 70 mph in the marked PalPass lanes. For daily commuters through Greenville, that time savings really adds up.
Palmetto Pass Discounted Rates
| Vehicle Class | Axle Count | Per Plaza (Discounted) | Full Trip Total |
|---|---|---|---|
| Passenger Vehicle | 2 | $2.15 | $4.30 |
| Small Truck | 3 | $4.56 | $9.12 |
| Medium Truck | 4 | $6.08 | $12.16 |
| Heavy Commercial | 5 | $7.60 | $15.20 |
| Oversized or Multi-Axle | 6+ | $9.12 | $18.24 |
The savings per trip for a standard passenger vehicle are modest at $0.20. For a daily commuter, though, those dimes stack up fast over a year of driving.
How to Get a Palmetto Pass
Setting up an account is straightforward. Here’s how:
- Visit the Southern Connector’s PalPass registration page
- Create an account and register your vehicle’s license plate
- Make an initial deposit of $40.00 (this is your prepaid toll balance)
- Receive your sticker transponder and mount it to your windshield
There are two account types available:
Credit Card User Account
- Your balance auto-replenishes when it drops to $10.00 or below
- The system charges your card $40.00 or the average of your last three months of usage, whichever is greater
- Hands-off and worry-free
Cash User Account
- You manually add funds by mail or in person at the Southern Connector Customer Service Center in Piedmont
- No cash by mail. Use a check or money order only
- Requires more active management on your part
For most people, the credit card account is the easier choice. Set it and forget it.
PalPass Rules You Need to Know
A few important rules come with using the transponder:
- The tag is tied to a specific registered vehicle. You cannot move it between cars without updating your account.
- If you sell a vehicle, remove the sticker tag. It is designed to become non-functional once removed, which prevents misuse.
- At the toll lane, signal lights tell you how the transaction went:
- Green light: Successful transaction, healthy balance
- Yellow light: Low balance, replenishment coming soon
- Red light or no light: Transaction failed. Pull over and pay cash to avoid a violation.
Does Your Out-of-State Transponder Work in SC?
Here’s the part that trips up a lot of visitors. South Carolina’s PalPass system is not part of the E-ZPass network. That means your E-ZPass, SunPass, NC Quick Pass, or Peach Pass will not work on I-185.
Every other state on the Atlantic coast from Maine to Florida is part of a reciprocal transponder network. South Carolina is currently the exception.
Regional Transponder Compatibility (2026)
| Transponder | Home State | Works in SC? |
|---|---|---|
| Palmetto Pass | SC | Yes |
| E-ZPass | Various | No |
| NC Quick Pass | NC | No |
| SunPass Pro | FL | No |
| Peach Pass | GA | No |
There are active legislative discussions about joining the E-ZPass network under the upcoming SCDOT Modernization Bill, but as of March 2026 no formal implementation date has been announced. For now, if you’re coming from out of state, your best bet is the cash or credit card lane at the mainline plaza. Simple and reliable.
What Happens If You Miss a Toll?
South Carolina uses a system called “Pledge to Pay” for missed tolls. It works differently from the license-plate billing systems used in most other states, so it’s worth understanding before anything goes wrong.
If you arrive at a staffed mainline plaza and cannot pay, the attendant will ask you to complete a Pledge to Pay form. This form is a legal acknowledgment that you owe the toll, and you have 30 days to resolve it.
How to Resolve a Pledge to Pay
You have three ways to pay it off:
- Return to a staffed plaza at the East or West end of I-185 and pay in person
- Mail a check or money order to the Connector 2000 Association in Piedmont, SC (include the document number from your form)
- Visit the Customer Service Center at 3050 Interstate 185 in Piedmont
What Happens If You Ignore It?
Under South Carolina Code Section 57-5-1495, both the owner and driver of a vehicle are jointly responsible for unpaid tolls. Ignoring the notice escalates quickly:
| Violation Stage | Administrative Fee | Potential Civil Penalty | Total You Could Owe |
|---|---|---|---|
| First Notice | $10.00 | None | Toll + $10 |
| Second Notice | $25.00 | None | Toll + $25 |
| Court Citation | $25.00 | Up to $50.00 | Toll + fees + fine + court costs |
Habitual violators with three or more violations in a year may also face holds on their vehicle registration renewals. Not worth it over a $4.50 toll.
Renting a Car in South Carolina? Read This First
This is where things get a little frustrating, and honestly, most rental car companies don’t warn you about it upfront. Most national rental company toll programs are not compatible with South Carolina’s PalPass system.
Rental Company Toll Service Comparison
| Rental Company | Toll Service | SC Status | Admin Fee if Violated |
|---|---|---|---|
| Enterprise | TollPass | Not compatible with PalPass | $3.95 per day plus toll costs |
| Hertz | PlatePass | NOT available in SC | $5.95 per day (no cap) |
| Dollar or Thrifty | PlatePass | NOT available in SC | Toll plus $15.00+ |
| Avis or Budget | e-Toll | Limited compatibility | Varies by agreement |
The recommendation from logistics and travel experts is consistent: use the cash or credit card lane at the mainline plaza when driving a rental on I-185. Avoid the PalPass lanes entirely.
If a violation occurs in a rental car, the Connector 2000 Association sends the notice to the rental company. The rental company then transfers the liability to you and adds their own processing fee, which often exceeds $30 per incident on top of the original toll. Paying $1 or two at the cash lane looks pretty great by comparison.
If you’re relocating to South Carolina or spending several months in the Upstate area for work, it’s worth opening a temporary PalPass account. The $40 deposit goes entirely toward tolls, and you can manage everything through the online portal.
What’s Coming Next: SC Toll Expansion
While the Southern Connector is currently the only active toll road in the state, South Carolina is preparing for significant changes. The SCDOT Modernization Bill (S.831), sponsored by Senate Transportation Chairman Larry Grooms, is currently on the Senate floor as of March 2026.
Here’s what S.831 could mean for drivers:
- Choice lanes (express toll lanes) added to congested interstates, including potentially I-526 in Charleston and I-26 between Charleston and Columbia
- Dynamic pricing where toll rates change in real time based on traffic volume, similar to systems used in Georgia and Florida
- Public-private partnerships to fund billions in new road capacity faster than traditional state budgets allow
- Possible E-ZPass interoperability within the next 36 to 48 months if the bill passes and implementation moves quickly
The reason SC is heading this direction comes down to basic math. In 2017, one cent of the state gas tax funded 114 miles of road resurfacing. By 2025, that same penny only covered 87 miles. Rising costs and more fuel-efficient vehicles have eroded the state’s traditional funding model significantly.
The gas tax alone can no longer keep up with SC’s infrastructure needs. Tolling is the most viable path forward for major projects, including the $7 billion+ Lowcountry Corridor project on I-526 in Charleston.
For the most current legislative updates, you can follow the bill directly at the South Carolina Legislature website.
Quick Tips for a Smooth Toll Experience in SC
A few practical reminders before you head out:
- Keep small bills in your glove box. $1 and $5 bills work great. The ramp plazas require exact change.
- Set up auto-replenishment on your PalPass account so you never hit a zero balance mid-commute.
- Do not use PalPass lanes in rental cars unless you have your own registered transponder with you.
- Respond to any Pledge to Pay forms immediately. The fee escalation happens fast and is completely avoidable.
- Check the signal light as you pass through a PalPass lane. A yellow light means your balance is low. A red light means you need to stop and pay cash right then.
- Out-of-state visitors: go straight to the cash or credit card lane. Every mainline plaza accepts credit cards, making it the easiest option if you’re just passing through.
Your Last Exit Before the Toll Booth
South Carolina’s toll situation in 2026 is genuinely one of the simplest in the country right now. One road. One transponder option. Credit cards accepted at mainline plazas. Cash always works. If you live near Greenville or commute on I-185 regularly, getting a PalPass is a no-brainer. For everyone else, the cash lane is fast, easy, and completely stress-free.
Big changes are coming with S.831 and the push toward choice lanes, so it’s worth bookmarking SCDOT’s official website to stay ahead of any updates. For now, though, toss a few dollars in your center console and enjoy the ride.
Pavithra Vinoth is the founder of nytollsinfo.com, where she simplifies U.S. toll systems through expert insights and custom-built calculators. Her research-driven tools help drivers avoid costly mistakes and make smarter car decisions.