---
title: Louisiana Oversize & Overweight Permits (OS/OW) | LaDOTD Superload | Alpine Truck Service
description: Expedited Louisiana LaDOTD oversize permits, New Orleans/Baton Rouge curfews, Atchafalaya Bridge routing, and LSP escorts across I-10 and I-20. Call (918) 607-6547.
image: https://www.alpinetruckservice.com/alpine-third-party-charges.webp
---

# Louisiana Oversize, Overweight & Superload Permitting Services

Comprehensive commercial trucking permits and heavy haul compliance across Louisiana.

## Agency & Permitting Authority
- **Agency**: Louisiana Department of Transportation and Development (LaDOTD)
- **Portal**: LaDOTD GeauxPermits System
- **Regulatory Advisory**: State DOT regulations and permit processing queues are determined by individual state transportation authorities and vary by agency workload. Carriers should verify active route advisories and state requirements prior to movement.

## Legal vs. Routine Permitted Dimensions
- **Legal Width**: 8' 6" (8' 0" on non-designated highways) | **Max Routine**: 16' 0"
- **Legal Height**: 13' 6" (14' 0" on designated primary routes) | **Max Routine**: 16' 0"
- **Legal Length**: 53' Semi-Trailer / 65' Overall | **Max Routine**: 125' 0"
- **Legal Gross Weight**: 80,000 lbs | **Max Routine**: 150,000 lbs
- **Axle Limits**: Single: 20,000 lbs, Tandem: 34,000 lbs (37,000 on state non-interstate highways with tolerance), Tridem: 42,000 lbs

## Permitting Scope & Services in Louisiana
- **Routine Oversize (OS) Cab-Cards**: Single-trip authorizations for dimensions exceeding 8' 6" (8' 0" on non-designated highways) width or 13' 6" (14' 0" on designated primary routes) height.
- **Overweight (OW) Axle Permits**: Overload cab-cards for heavy machinery and configurations exceeding 80,000 lbs GVW.
- **Multi-Axle Superload Permits**: Specialized filings exceeding Over 150,000, including State DOT and certified partner bridge reviews, route surveys, and police escorts.
- **Annual & Blanket Fleet Permits**: Continuous-operation annual highway authorizations for construction fleets.
- **Temporary Trip & Fuel Permits**: 72-hour IRP vehicle registration and IFTA fuel tax credentials.
- **County, City & Toll Road Clearances**: Municipal authorizations and turnpike clearances.

## Superload Permitting & State Review Protocol
- **Weight Trigger**: Over 150,000 lbs GVW or exceeding maximum allowable axle ratings
- **Width Trigger**: Over 16' 0" wide
- **Height Trigger**: Over 16' 0" high
- **Length Trigger**: Over 125' 0" overall length
- **State & Partner Bridge Review**: Louisiana Department of Transportation and Development (LaDOTD) electronic systems and certified structural engineering partners evaluate axle load distribution across bridge structures upon submission.
- **Route Surveys & Clearances**: Required for extreme heights/widths to verify overhead physical clearances.
- **Utility & Escorts**: Coordinated wire lifts with power utilities and State Police / Highway Patrol escorts.

## Pilot Cars & Escort Vehicle Requirements
- **Front Escort**: Required over 12' 0" wide on two-lane highways; over 14' 0" wide on multi-lane highways
- **Rear Escort**: Required over 14' 0" wide on multi-lane highways; length exceeding 90' 0"; rear overhang > 15' 0"
- **Height Pole**: Required for loads exceeding 15' 6" in height (lead vehicle with calibrated pole)
- **Police Escort**: Louisiana State Police (LSP) escort required over 16' 0" wide, 16' 0" high, or gross weight over 150,000 lbs

## Metro Curfews & Travel Restrictions
- **Curfew Zones**:
  - New Orleans Metro (I-10, US-90B, I-610, Lake Pontchartrain Causeway): 6:30–9:00 AM & 3:30–6:00 PM M-F
  - Baton Rouge Metro (I-10, I-12, Mississippi River Bridge): 6:30–9:00 AM & 3:30–6:00 PM M-F
  - Shreveport-Bossier City (I-20, I-49): 7:00–8:30 AM & 4:30–6:00 PM M-F
- **Travel Rules**: Daylight only (1/2 hour before sunrise to 1/2 hour after sunset) Monday through Saturday. Sunday travel allowed until 12:00 noon for loads under 12' wide. Overweight-only continuous travel allowed with lighting.

## Key Freight Corridors
- I-10 (Gulf Coast Logistics Arterial)
- I-20 (Northern Louisiana Spine)
- I-49 (North-South Industrial)
- I-12 (Baton Rouge to Slidell Bypass)
- US-90 / Future I-49 South
- I-55

## Frequently Asked Questions
### How long does LaDOTD take to issue a Louisiana oversize permit?
Routine single-trip permits submitted via GeauxPermits are typically processed in 2–4 business hours. Superloads requiring structural bridge analysis take 3–5 business days.

### What are Louisiana pilot car escort triggers?
Louisiana requires 1 escort for loads over 12' wide on 2-lane roads and over 14' wide on multi-lane highways. Loads over 90' long require a rear escort. Height over 15'6" requires a height pole.

### What are the Baton Rouge and New Orleans rush hour curfews?
Oversize loads cannot move in Baton Rouge (I-10/I-12) or New Orleans (I-10/US-90B) between 6:30–9:00 AM and 3:30–6:00 PM on weekdays.

### Are oversize loads allowed across the Atchafalaya Basin Bridge on I-10?
Yes, but loads must strictly adhere to the right lane, maintain required following distances, and comply with state speed monitoring.

## Contact & Direct Dispatch
- **Direct Phone**: (918) 607-6547 (CALL: [918-607-6547](tel:9186076547))
- **Email**: [permits@alpinetruck.com](mailto:permits@alpinetruck.com)
- **Online Intake**: [alpinetruckservice.com/permits/louisiana](https://www.alpinetruckservice.com/permits/louisiana)