Indiana commercial vehicle weight limits follow the federal Interstate standard of 80,000 lbs gross, 20,000 lbs per single axle, and 34,000 lbs per tandem axle group. The federal bridge formula (23 U.S.C. 127) applies on all routes. Indiana imposes spring weight restrictions on certain non-Interstate roads typically from late February through mid-April. Restricted routes reduce axle weight limits during spring thaw. Check INDOT for current restricted routes and lifting dates. Oversize and overweight permits are available from IN DOT for loads exceeding standard limits. Verify current road-specific postings with the Indiana DOT before routing heavy loads.
Indiana imposes spring weight restrictions on certain non-Interstate roads typically from late February through mid-April. Restricted routes reduce axle weight limits during spring thaw. Check INDOT for current restricted routes and lifting dates.
Check current restrictions at IN DOT →The federal bridge formula limits the weight on any group of axles based on the distance between the outermost axles in the group. It applies in Indiana on all routes where federal standards apply.
W = maximum weight in lbs · L = axle spacing in feet · N = number of axles
Indiana DOR issues oversize/overweight permits online through the Permit Operations System. Annual permits available for qualifying routine operations. Superloads require engineering review. Indiana Toll Road has separate permit requirements for oversize loads.
Apply for Indiana OS/OW Permit →On Indiana Interstate highways, the maximum gross vehicle weight is 80,000 lbs matching the federal standard. State routes and secondary roads may have lower posted limits. Overweight permits from the Indiana DOR are required for loads exceeding standard limits.
Yes. Indiana INDOT imposes seasonal weight restrictions on non-Interstate roads during spring thaw, typically from late February through mid-April. Restricted routes reduce allowable axle weights. Check INDOT's website for current restricted routes and lifting dates before routing heavy loads on secondary roads.
The Indiana Toll Road (I-80/I-90) follows federal weight limits of 80,000 lbs gross. Oversize or overweight vehicles on the Toll Road require permits and may face additional restrictions at toll plazas. Contact the Indiana Toll Road for specific requirements.
Indiana oversize/overweight permits are issued online through the Indiana DOR Permit Operations System at in.gov. Single-trip and annual permits are available. Superloads require engineering review and direct contact with INDOT.
Indiana provides agricultural weight exemptions for farm vehicles transporting farm products or supplies on intrastate routes. These exemptions apply within 150 air miles of the farm and don't cover for-hire operations. Contact Indiana BMV for specific exemption documentation.
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Disclaimer
The information on this page is compiled from publicly available government sources and is provided for general informational purposes only. TruckRadar is an independent search engine — we are not affiliated with any government agency and this content does not constitute legal or compliance advice. Regulations change frequently; always verify current requirements directly with the official source before making compliance decisions.
Official source: Indiana IN Department of TransportationLast reviewed: 2026-04