Florida Truck Weight and Size Limits

Legal limits for a truck in Florida without a permit: Interstate axle and gross weights, height, width, and semitrailer length, each with its official source.

Data pending verification

Some official figures this page relies on haven't been confirmed against the source yet. Don't rely on results here until this notice is gone.

What's pending

weight-limits/states/florida

Florida limits at a glance

Florida truck size and weight limits with sources
Limit	Florida	Source
Interstate gross weight	80,000 lb	FHWA, Compilation of Existing State Truck Size and Weight Limit Laws (Report to Congress, May 2015), Appendices A and B
Interstate single axle	Pending verification	FHWA, Compilation of Existing State Truck Size and Weight Limit Laws (Report to Congress, May 2015), Appendix B: Summary of State Exceptions to Federal Truck Weight Limits
Interstate tandem axle	Pending verification	FHWA, Compilation of Existing State Truck Size and Weight Limit Laws (Report to Congress, May 2015), Appendix B: Summary of State Exceptions to Federal Truck Weight Limits
Width (National Network)	102 in	23 CFR 658.15, Width (eCFR)
Height	13 ft 6 in (automobile transporters 14 ft)	Fla. Stat. § 316.515(2), Maximum width, height, length
Semitrailer length	48 ft; a semitrailer over 48 ft and up to 57 ft may run (except on restricted roads) if the kingpin to the center of the rear axle or axle group is 41 ft or less and it has a rear underride guard	Fla. Stat. § 316.515(3), Maximum width, height, length
Grandfathered semitrailer length	48 ft	23 CFR part 658, Appendix B, Grandfathered Semitrailer Lengths (eCFR)

Interstate weight limits

Federal law sets the Interstate limits at 20,000 lb on a single axle, 34,000 lb on a tandem, and 80,000 lb gross, with the bridge formula on every axle group (23 CFR 658.17). States may keep higher limits they had before the federal limits took effect ("grandfather rights").

FHWA's Florida summary lists 20,000 lb single and 40,000 lb tandem (22,000/44,000 lb with Florida's 10 percent tolerance); its exceptions table lists 22,000/44,000 lb next to the Florida Turnpike. Which figure applies on the Interstate isn't confirmed.

Bridge formula check with Florida limits

A 5-axle tractor-trailer is filled in. Change the spacings and weights to match your rig; the limits for single axles, tandems, and gross are Florida's Interstate limits (federal limits stand in where a figure is pending).

Your result

Enter your axle spacings and tap "Check bridge formula". A 5-axle tractor-trailer is filled in.

Open the full bridge formula calculator →

Florida limits off the Interstate

FHWA's summary of Florida law for trucks in regular operation (no permit), including non-Interstate highways. It reflects state law as of October 1, 2012; check the state for later changes.

Single axle: 20,000 lbs. (22,000 lbs. with 10 percent tolerance)
Tandem axle: 40,000 lbs. (44,000 lbs. with 10 percent tolerance)
Tridem axle: Per FBF
Gross weight: 80,000 lbs.
Other: 10 percent scale tolerance*

Where Florida allows more than federal limits

State law allows up to 40,000 lbs. on a tandem axle.
State law includes a 10 percent weight allowance for axle weight limits.

Height, width, and length

Width: 102 inches. States may not set a width limit of more or less than 102 inches on the National Network (23 CFR 658.15(a)). Permits can allow wider loads.
Height: 13 ft 6 in (automobile transporters 14 ft). There is no federal height limit; each state sets its own.
Semitrailer length: 48 ft; a semitrailer over 48 ft and up to 57 ft may run (except on restricted roads) if the kingpin to the center of the rear axle or axle group is 41 ft or less and it has a rear underride guard
Grandfathered semitrailer length: 48 ft. The minimum semitrailer length the state must allow in a tractor-semitrailer combination on the National Network, based on lengths legal in the state on December 1, 1982. Federal law also requires at least 48 ft (23 CFR 658.13(b)(1)).

Over these limits you need a permit. Florida oversize/overweight permits (850-410-5777).

Florida compared with neighboring states

Interstate weight limits, height, and semitrailer length. "Pending" means not yet verified.
State	Gross	Single	Tandem	Height	Semitrailer
Florida	80,000 lb	Pending	Pending	13 ft 6 in	48 ft
Alabama	80,000 lb	20,000 lb	34,000 lb	Pending	Pending
Georgia	80,000 lb	20,340 lb	34,000 lb	13 ft 6 in	53 ft
South Carolina	80,000 lb	20,000 lb	35,200 lb	13 ft 6 in	53 ft on the Interstate and designated…
Mississippi	80,000 lb	20,000 lb	34,000 lb	Pending	Pending

Sources

Source: FHWA, Compilation of Existing State Truck Size and Weight Limit Laws (Report to Congress, May 2015), Appendix B: Summary of State Exceptions to Federal Truck Weight Limits · Effective Oct 1, 2012 · Last verified Sep 28, 2026

Source: FHWA, Compilation of Existing State Truck Size and Weight Limit Laws (Report to Congress, May 2015), Appendix A: Florida · Effective Oct 1, 2012 · Last verified Sep 28, 2026

Source: 23 CFR 658.15, Width (eCFR) · Last verified Sep 28, 2026

Source: 23 CFR part 658, Appendix B, Grandfathered Semitrailer Lengths (eCFR) · Last verified Sep 28, 2026

Source: Fla. Stat. § 316.515(3), Maximum width, height, length · Last verified Sep 28, 2026

Source: FHWA, Oversize/Overweight Load Permits: State permit contacts · Last verified Sep 28, 2026

Limits change, and cities, counties, and posted bridges can set lower ones. Check with Florida before you run a load near the limits. Page data last verified Sep 28, 2026.

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