State profile · Mississippi

Mississippi oversize and overweight permits

Legal limits, escort triggers, permit fees, the superload line and the police escort position for Mississippi — every figure carrying the state document behind it.

11 source documents on fileoldest revision 2024-09-21last retrieved 2026-09-0520 escort rules in effect6 source conflictsFree · no account needed

The short version: a Mississippi single-trip permit starts at $10 before bands, overweight and the transaction charge; an escort is first required at 13' or more wide; and the load becomes a superload at a gross weight the state does not publish. Everything below carries the Mississippi document it came from, that document's own revision date, and the date we read it.

Escort requirements

2. When Mississippi requires an escort

MeasurementFirst escort triggerFirst police escort trigger
Width13' or morerev. 2024-09-21 · read 2026-09-05 · varies by road classNone published
Height15'9" or morerev. 2024-09-21 · read 2026-09-0515'9" or morerev. 2024-09-21 · read 2026-09-05
LengthNone published160' or morerev. 2024-09-21 · read 2026-09-05
Rear overhangNone publishedNone published
Gross weightNone published300,000 lb or morerev. 2024-09-21 · read 2026-09-05
Every escort rule on file, in full20 rules

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Permit fees

3. Mississippi single-trip permit fees

ChargeAmount
Single-trip base$10rev. 2024-09-21 · read 2026-09-05
Transaction / cardNot yet covered
Route analysis reviewNot yet covered
Route with no bridgesNot yet covered

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Overweight

4. How Mississippi prices overweight

Miss. Code Ann. § 63-5-51 authorises the Mississippi Transportation Commission to "issue a special permit in writing authorizing the applicant to operate or move a vehicle or combination of vehicles of a size or weight of vehicle or load exceeding the maximum specified in this chapter" and sets NO dollar amount, NO formula and NO fee-setting delegation anywhere in subsections (1)(a)-(d) or (2), all of which were read in full. Every Mississippi permit price therefore rests solely on one undated MDOT fee sheet, with no statutory backstop.

Miss. Code Ann. § 63-5-51 (via FindLaw — SECONDARY source) — rev. 2025-01-01 · read 2026-09-05

Superload

5. Mississippi's superload threshold

Above one of these, the state stops issuing over the counter and prices the move after an engineering review.

TriggerThreshold
Gross weightSources disagreeover 189,999 lb per cover "PERMIT & MOTOR CARRIER DIVISION MANUAL… — versus — 189,999 lb or more per cover "PERMIT & MOTOR CARRIER DIVISION MANUAL…
Widthover 17'rev. 2024-09-21 · read 2026-09-05
Heightover 15'7"rev. 2024-09-21 · read 2026-09-05
Lengthover 121'rev. 2024-09-21 · read 2026-09-05
Short axle spacingNot yet covered

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Route survey

6. Route survey and bridge review

The dimensions at which Mississippi triggers a physical route inspection or an engineering review, and what the agency charges to review it.

MeasurementInspection / review trigger
Widthover 17'rev. 2024-09-21 · read 2026-09-05
Heightover 15'7"rev. 2024-09-21 · read 2026-09-05
Lengthover 121'rev. 2024-09-21 · read 2026-09-05
Police escorts

7. Police escorts

Charges exist and no schedule is published. Mississippi requires two blue-light escorts at 300,000 lb or more and contemplates a discretionary police escort by width, and neither MDOT nor the Mississippi Department of Public Safety publishes an hourly rate, minimum hours, officer minimum, mileage rate or cancellation charge. The Manual says only that "The Mississippi Department of Public Safety (DPS) is authorized to enforce Mississippi laws relating to commercial vehicles".

This is a positive finding: we searched and there is nothing to quote. It is not the same as "no police escort is ever required here".

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Travel restrictions

8. When you can move it

Holiday, curfew and night-travel windows are not yet encoded for Mississippi.

Mississippi spring thaw restrictions →

Why those windows are absent rather than estimated

They are not guessed at here. What we do publish is the seasonal weight-restriction picture, with the date we last read each state's own bulletin — a curfew invented from a plausible pattern is worth less than an honest gap, because a reader cannot tell the two apart on the page.

Who issues it

9. Permit office

The agency behind each figure above is linked from that figure. We publish no per-state permit-office phone number.

Why there is no phone number here

We are not publishing per-state permit-office phone numbers yet, and the reason is worth stating: the two seed lists available for them are both demonstrably stale — the federal one gives two different states the same phone number — and a wrong number on a page like this costs somebody a morning. The agency behind each figure above is linked from that figure, which is the part we can stand behind today.

Source conflicts

10. Where the sources disagree

Two official documents, both in effect, giving different answers. Neither has been adopted.

legal gross weight

80,000 lbMiss. Code Ann. § 63-5-33 (via FindLaw — SECONDARY source) — Table III — 80,000 lb, but only on highways the Commission has designated as capable of the maximum load limits; the federal bridge formula; FindLaw states "Current as of January 01, 2025"
rev. 2025-01-01 · read 2026-09-05
57,650 lbMiss. Code Ann. § 63-5-29 (via FindLaw — SECONDARY source) — Table I — undesignated highways, "36 and greater — 57,650 maximum", measured longitudinally to the nearest foot; FindLaw states "Current as of January 01, 2025"
rev. 2025-01-01 · read 2026-09-05
80,000 lbMDOT — Permit & Motor Carrier Division Manual (9/21/2024) — cover "PERMIT & MOTOR CARRIER DIVISION MANUAL 9/21/2024"; definitions 2, 3, 4, 15, 18, 19, 21; General Permit Regulations; Super Load section
rev. 2024-09-21 · read 2026-09-05

Both are in effect and neither has been adopted.

superload gross-weight threshold

over 189,999 lbMDOT — Permit & Motor Carrier Division Manual (9/21/2024) — cover "PERMIT & MOTOR CARRIER DIVISION MANUAL 9/21/2024"; definitions 2, 3, 4, 15, 18, 19, 21; General Permit Regulations; Super Load section
rev. 2024-09-21 · read 2026-09-05
189,999 lb or moreMDOT — Permit & Motor Carrier Division Manual (9/21/2024) — cover "PERMIT & MOTOR CARRIER DIVISION MANUAL 9/21/2024"; definitions 2, 3, 4, 15, 18, 19, 21; General Permit Regulations; Super Load section
rev. 2024-09-21 · read 2026-09-05

Both are in effect and neither has been adopted.

An overweight rate printed in the wrong unit, 200 times apart

Read literally, ".05 cents" is $0.0005 per 1,000 lb per mile and a 100,000 lb load over 100 Mississippi miles costs $1.00 in excess-weight charge. Read as the industry reads it — five cents, $0.05 — the same move costs $100.00. A factor of ONE HUNDRED, in the only document that states a Mississippi permit price. There is NO statutory backstop: Miss. Code Ann. § 63-5-51 authorises the permit and sets no fee, no formula and no fee-setting delegation, and both the Rule and the Manual describe overweight pricing as "based on weight and per mile travel" without a rate. Three further inputs the same sentence never supplies: whether a part-thousand pounds rounds up, down or pro rata; whether mileage is whole miles, rounded or true distance; and WHICH excess the charge runs on, since gross over 80,000, a single axle over 20,000 and a tandem over 34,000 are joined by "or" with no stated basis. Neither reading has been adopted and no Mississippi overweight amount is quoted.

MISSISSIPPI_OVERWEIGHT_RATE_UNIT_CONFLICT

A heavy-haul axle table rewritten wholesale between two live documents

Both documents print a table headed "Maximum Axle Weights and Minimum Spacing / Special Heavy Haul Blanket Permit" and they do not agree on a single row above five axles. SIX AXLES: the Rule prints 80,000-120,000 lb with a 14,000 lb steering axle, a 42,000 lb tandem and a 64,000 lb tri-axle; the Manual prints 80,000-117,000 lb with a 15,000 lb steering axle, a 45,000 lb tandem and a 57,000 lb triaxle. SEVEN AXLES OR MORE: the Rule prints 80,000-150,000 lb with a 56,000 lb tandem and an 80,000 lb quad; the Manual prints 80,000-142,000 lb with a 45,000 lb tandem and a 60,000 lb quad. The Manual also introduces an "Eight Axles or More (80,000 lbs. to 150,000 lbs.)" row the Rule does not have. The differences run to 20,000 lb on a quad group and 8,000 lb of allowed gross. The five-axle row (14,000 / 40,500 / 40,500) is the one row both share. Anyone pricing a Mississippi Special Heavy Haul move must know which table the permit writer is using. Neither has been adopted, and this engine does not price the annual blanket product.

MISSISSIPPI_SPECIAL_HEAVY_HAUL_TABLE_CONFLICT

An annual blanket envelope that gains a height limit in one document

Rule § 900: "Authorizes the movement of loads not exceeding 14 feet in width, 120 feet in length with no more than 14 feet 11 inches rear overhang and must be one continuous piece." — no height at all. Manual: "This permit authorizes the movement of loads not exceeding fourteen (14) feet in width, FOURTEEN (14) FEET IN HEIGHT, one hundred twenty (120) feet in length, with no more than fourteen (14) feet eleven (11) inches rear overhang." A 14 ft 6 in high, 12 ft wide load is inside the Rule’s envelope and outside the Manual’s — covered by the $100 annual blanket under one document and needing a separate single-trip permit under the other.

MISSISSIPPI_BLANKET_ENVELOPE_CONFLICT

The same $200 permit lasts a year in one document and a month in the other

The fee sheet lists "Pole Blanket $200.00" under Blanket Fees and states that "The Blanket Permits are not prorated, all permits are issued for one (1) year unless otherwise specified". The Manual states "The Pole Blanket Permit is valid for one (1) month at a cost of $200.00 per fleet of vehicles." A twelvefold difference in what $200 buys. The fee sheet’s "unless otherwise specified" arguably yields to the Manual, but the fee sheet does not itself specify otherwise. Both on file; neither adopted.

MISSISSIPPI_POLE_BLANKET_CONFLICT

Every conflict across all states →

Scope

11. What this does not include

Named rather than gestured at, because each of these can exceed the permit itself. Every item is listed; open one for why it is excluded.

Line haul, fuel and driver time

This is a permit fee, not a freight rate.

Civilian pilot car rates

We hold no rate data, and the two commercial sites that publish market rates disagree by nearly a factor of two on the same service.

Route-survey engineering

The agency's review fee is shown where the state publishes one; the engineer's own fee is a private cost with no schedule.

Bonds and escrow

Set per move by the agency, and in at least one state the escort is billed at actual cost against it.

Utility coordination and line lifts

Arranged with each utility, priced by each utility.

Second-issuer permits

A toll, bridge or city authority inside the same state issues its own permit, and a state total that omits it is missing a whole permit.

Price a lane through Mississippi →

Provenance

12. Every source behind this page (11)

Every document behind Mississippi11 sources
Common questions

Questions

How much is an oversize permit in Mississippi?

The single-trip base is $10, before the dimension bands, the overweight component and the transaction charge. The base alone is rarely what is paid.

When does Mississippi require a pilot car?

The first width trigger is 13' or more, and it varies by road class — the figure shown is the lowest across classes.

What is a superload in Mississippi?

Mississippi publishes no gross-weight superload threshold in the documents on file — see the superload section, which shows the dimensional triggers it does publish.

Do Mississippi's own documents contradict each other?

Yes, in 6 place(s) we hold both documents for. They are set out in full above, each with its pinpoint citation, and none of them has been adopted.