$1,200–$16,000+ Typical fine range per violation

30% of trucks weighed get flagged

Out of Service possible until weight corrected

CSA Points stay on your record 2 years

Federal Weight Limits

The federal limits apply on the Interstate Highway System. These are maximums — some states allow more on state roads, others are stricter.

Configuration	Maximum Weight	Notes
Gross Vehicle Weight (GVW)	80,000 lbs	Total truck + trailer + cargo + fuel
Single Axle	20,000 lbs	Steer axle usually limited to 12,000-14,000
Tandem Axle	34,000 lbs	Two axles within 40-96 inch spacing
Bridge Formula	Varies	Weight distributed over distance between axles

The math that trips people up: Your truck weighs 30,000-35,000 lbs empty. Add fuel (7 lbs/gallon x 150 gallons = 1,050 lbs). That leaves only 44,000-49,000 lbs of cargo capacity — and that’s before axle limits come into play.

Axle Weight Distribution: Where Most Violations Happen

You can be under 80,000 GVW and still get an overweight ticket. Axle violations are more common than gross weight violations.

Steer Axle

12,000–14,000 lbs

Most violations here are from heavy engines, wet kits, or too much fuel in front tanks

Fix: Run front tanks low when loaded heavy

Drive Axles (Tandem)

34,000 lbs max

Slide tandems forward to shift weight off drives. Every hole = ~500 lbs

Fix: Slide tandems forward (toward cab)

Trailer Axles (Tandem)

34,000 lbs max

Slide tandems back to shift weight off trailer axles. Most adjustable.

Fix: Slide tandems back (toward rear)

The Sliding Rule of Thumb: Sliding your trailer tandems one hole shifts approximately 400-500 lbs between drive and trailer axles. Always scale after sliding.

What Overweight Fines Actually Cost

Fines vary wildly by state. Some charge per pound over, others have flat penalties. Here are examples from states truckers hit most:

State	Fine Structure	Example: 5,000 lbs Over	Severity
California	$1/lb for first 2,500, $2/lb after	$7,500	High
Texas	$150 + $100/500 lbs over	$1,150	Medium
New York	$150-$600 per violation, plus points	$1,500–$6,000	High
Illinois	$0.15/lb over (2,001-2,500), escalating	$2,250–$4,500	High
Florida	$10/100 lbs over first 2,000, $50/100 after	$1,700	Medium
Georgia	$150 + sliding scale per pound	$800–$2,500	Medium
Pennsylvania	$150 base + $75/500 lbs, doubles for repeat	$900	Lower
Oregon	$0.30-$0.55/lb over, plus OOS possible	$1,500–$2,750	High

It gets worse: Many states add court costs ($100-$500), impound fees if placed out of service ($200-$500/day), and offload costs to get to legal weight ($500-$2,000). A $2,000 fine can easily become a $4,000+ day.

Who Pays the Overweight Fine?

This is where it gets messy. Who’s liable depends on who loaded, who sealed, and what your contract says.

The Driver Pays When…

• You watched it get loaded and didn’t object
• You signed the BOL without noting concerns
• You skipped a CAT scale before hitting the highway
• You’re an owner-operator with no contract protection

The Shipper/Broker Pays When…

• Load was sealed — you couldn’t verify weight
• BOL weight was wrong (shipper’s declared weight)
• Contract includes overweight indemnification
• Some states hold shippers strictly liable

Protect Yourself

• Always note “shipper load and count” on BOL
• Scale before you leave the area when possible
• Get overweight language in your contracts
• Take photos of sealed loads for your records

Weigh Station Strategies

You can’t avoid weigh stations (that’s an even bigger fine). But you can be prepared.

1

Scale Before the Station

Hit a CAT scale near pickup. Costs $12-15 — the cheapest insurance you’ll ever buy. A reweigh is only $3. Know your numbers before DOT does.

2

Know Your Truck’s Empty Weight

Weigh your truck empty with full tanks. Write it on your visor. Different trailers = different empty weights. Don’t guess.

3

Use PrePass / Drivewyze

Good safety record + transponder = bypass most stations. PrePass is ~$17/month. Pays for itself in time saved and stress avoided.

4

Slide Before You Scale

If you know you’re heavy on one axle, slide tandems at a truck stop BEFORE the weigh station. Don’t try to slide in the inspection area.

5

Carry Your Permits

If you have oversize/overweight permits, have them accessible. Permit violations are separate from weight violations — and just as expensive.

6

Don’t Run the Scale

Bypassing an open weigh station is a federal violation. Fines range from $1,000-$10,000+, and they WILL chase you. It’s not worth it.

How Overweight Violations Affect Your Insurance

This is the part nobody tells you about. The fine is just the beginning.

CSA Score Impact

• Overweight = Vehicle Maintenance BASIC violation
• Points stay on your record for 2 years
• Severity weight: 4-8 points depending on amount over
• Multiple violations trigger FMCSA intervention
• High CSA scores = harder to get loads from brokers

Insurance Premium Impact

• Insurers pull your CSA at renewal — weight violations are red flags
• Pattern of violations = 10-30% premium increase
• Some carriers won’t insure drivers with repeated weight violations
• Out-of-service events are especially damaging
• OOS + tow/impound = potential claim on your policy

Hidden Costs

• Downtime: 2-6 hours at a weigh station, sometimes overnight
• Offloading: $500-$2,000 to partial-unload to legal weight
• Lost loads: Late delivery = detention claims, contract penalties
• Court appearances: Some states require in-person court dates
• Shipper blacklisting: Some won’t tender loads to overweight violators

When You Need an Overweight Permit

Some loads are legally overweight — but only with the right permits.

Single Trip

Cost: $15-$200 per state

For: One-time overweight/oversize loads

Lead time: 1-5 business days

Must specify route, dates, and dimensions

Annual / Blanket

Cost: $50-$1,500 per state

For: Repeated overweight loads on same routes

Good for: Construction, aggregate, logging

Usually limited to 10-20% over standard limits

Superload

Cost: $500-$5,000+ per state

For: Extreme overweight (100,000+ lbs)

Requirements: Escorts, route surveys, bridge analysis

May require engineering studies. Weeks of lead time.

Insurance note: Overweight permits often require higher cargo and liability limits. Check with your agent before accepting overweight loads — your standard policy may not cover them.

Overweight Prevention Checklist

Before Loading

• Know your truck’s empty weight (weigh with full tanks)
• Calculate max payload: 80,000 - empty weight = capacity
• Ask shipper for load weight before arriving
• If load exceeds capacity, negotiate partial load or refuse
• Check if overweight permit is needed

After Loading

• Hit a CAT scale within 5 miles of pickup
• Check each axle group — not just gross weight
• Slide tandems if any axle is over
• Get a reweigh after sliding ($3)
• If still over, go back to shipper — DO NOT drive overweight

Always

• Keep scale tickets for every load (30 days minimum)
• Note “shipper load and count” on BOL for sealed loads
• Know state-specific weight limits on your routes
• Monitor seasonal weight restrictions (spring thaw)
• Maintain PrePass/Drivewyze for bypass eligibility

Seasonal Weight Restrictions

Spring thaw restrictions catch out-of-state drivers every year. Northern states reduce weight limits when frozen roads thaw.

What Happens

When frozen ground thaws, road bases become soft. Heavy trucks cause permanent damage. States respond by reducing legal weight limits 10-35% on affected roads, typically March through May.

States to Watch

Michigan, Minnesota, Wisconsin, North Dakota, Montana, Idaho, Maine, Vermont — and most northern states. Posted signs mark restricted roads. Fines are per axle in some states.

How to Prepare

Check state DOT websites before you run. Many post restriction maps online. Plan routes on unrestricted highways. Some states issue email alerts — sign up for states you run regularly.

Can You Fight an Overweight Ticket?

Sometimes. Here’s when it’s worth contesting:

Worth Fighting

• Scale calibration: Request calibration records — uncalibrated scales can be challenged
• Shipper-loaded sealed trailer: You couldn’t verify weight. Some states put liability on shipper
• BOL weight mismatch: If BOL says 42,000 and actual was 47,000, shipper declared falsely
• Permit was valid: If you had a permit covering the weight, and it wasn’t acknowledged

Hard to Win

• You watched it load: If you were present at loading, you accepted responsibility
• No CAT scale receipt: No evidence you tried to check
• Repeat offender: Courts are less sympathetic with a pattern
• Way over (10,000+ lbs): Hard to argue you didn’t know

Hire a traffic attorney for fines over $2,000. They typically charge $500-$1,500 and can often reduce the fine or keep points off your record. Some specialize in trucking violations.

The Insurance Connection

CSA scores drive premiums. Weight violations add points to your Vehicle Maintenance BASIC. High scores = higher premiums at renewal. Multiple violations can make you uninsurable with preferred carriers.

Overweight loads need coverage verification. If you’re hauling permitted overweight loads, your standard cargo and liability limits may not be sufficient. Always confirm with your agent before accepting overweight freight.

Damage from overweight = potential claim denial. If you cause road or bridge damage while overweight without a permit, your liability insurer may deny or subrogate. Operating illegally can void coverage.

Need to verify your coverage handles overweight loads? Want to understand how weight violations affect your rates?

Call RMS: 208-800-0640

Frequently Asked Questions

How much does a CAT scale weigh cost?

First weigh is $12-15 for a full truck (steer, drives, trailer). A reweigh within the same visit is only $3. Keep the receipt — it’s proof you checked. Given that overweight fines start at $800-$1,200, a CAT scale is the best $15 you’ll spend.

Can I get an overweight ticket on a state highway but not an interstate?

Yes, and it can go either way. Some states allow heavier weights on state highways than interstates (especially for ag and construction). Others have lower limits on state and county roads. Always check the posted signs and state-specific regulations for the roads you’re running.

What happens if I get an out-of-service order for being overweight?

You cannot move the truck until you’re at legal weight. That usually means waiting for a partial offload — which can take hours and costs $500-$2,000. You may also be impounded ($200-$500/day). The OOS goes on your CSA record and is visible to insurers and brokers for 2 years.

Does my insurance cover overweight fines?

No. Commercial auto and cargo insurance do not cover fines or penalties — those are your responsibility (or the shipper’s if your contract assigns liability). However, if being overweight causes an accident, your liability insurance covers third-party damages, though operating illegally could complicate the claim.