Indiana Truck Weight Limits and Permit Sources

At-a-glance summary

Field-level reference data

Indiana’s weight review has two well-confirmed official sources: Indiana Code Article 9-20-18 for the penalty framework and Indiana State Police Motor Carrier Safety for enforcement. Having both penalty and enforcement clearly sourced puts Indiana in a better position than states where those fields remain open. The gross, single-axle, and tandem rows use the federal Interstate baseline and the FHWA state law compilation.

Reading the Indiana weight table

Read each row independently. Gross weight passing doesn’t mean tandem or bridge formula compliance. Indiana has a significant Interstate freight network — I-65, I-70, I-80/90 — and the federal baseline applies on those routes. For Indiana state routes and off-Interstate distribution routes, verify the FHWA state law compilation and any permit conditions.

When an adjustment is made after a heavy reading, the scale ticket before and after shows whether the adjustment actually moved weight in the intended direction. That’s the record worth keeping, not just a note that the truck was adjusted.

Permit and route authority in Indiana

INDOT Oversize/Overweight Permits is the permit authority for Indiana over-limit moves. Applications go through INDOT’s current permit portal. Permit terms cover route, dates, vehicle configuration, and axle weights. Indiana is a major through-state for freight, which means permit processing for common corridors may have established routes, but those should still be verified against the current permit conditions.

Seasonal, route, and local checks

No statewide frost-law or seasonal weight restriction was confirmed for Indiana in this review. Indiana’s climate can produce spring thaw conditions that affect local roads, but a single statewide seasonal source wasn’t confirmed. Local bridge and road posting conditions can still apply to specific routes, particularly on county roads that serve agricultural shippers.

Tickets and enforcement notes

Indiana State Police Motor Carrier Safety handles roadside weight enforcement. Indiana Code Article 9-20-18 is the official source reviewed for overweight penalty context. For any citation, the specific IC section, excess weight, and any court instructions are the controlling documents. A private scale ticket can document weight history and may be relevant if a citation is disputed, but the enforcement record is the primary document.

Source-strength notes for Indiana

This page uses 7 source records and carries 3 high-confidence, 23 medium-confidence, and 3 low-confidence fields. Permit office and fine statute fields carry direct official support. Weight limit fields run through the FHWA state law compilation. No statewide seasonal source confirmed; those fields carry low confidence.

Building an Indiana source file

A practical Indiana dispatch file includes the INDOT permit documentation, current scale ticket, approved route, and the IC 9-20-18 citation for penalty background. The axle weight table, permit office list, seasonal restrictions, and overweight fines pages support multi-state Midwest corridor planning.

How to Read a CAT Scale Ticket covers ticket reading. How to Slide Tandems covers distribution. Bridge Formula Explained covers bridge spacing.