Oversize Load Permit Requirements — Illinois

Legal size/weight limits, escort thresholds, travel restrictions, and permit office contact for Illinois.

⚠ REFERENCE ONLY — NOT A PERMIT. VERIFY WITH THE STATE BEFORE YOU TRAVEL.

These figures are a reference summary of publicly published state rules, not a substitute for a state-issued permit and not legal advice. Rules change — always confirm current limits and requirements directly with the state permit office before you plan or run a move. Last verified: 2026-06-28. Oversize Ops is NOT responsible and CANNOT be held liable for decisions made from this reference. Official source ↗

Legal Maximum Dimensions (no permit required)

Width: 8.5ft (102in)
Height: 13.5ft (162in)
Length: 53ft
Gross Weight: 80,000 lbs
Single Axle: 20,000 lbs
Tandem Axle: 34,000 lbs

Escort / Pilot Car Thresholds (see glossary for terms, certification requirements for the driver)

Front escort required over: 12ft wide
Rear escort required over: 12ft wide
Both escorts required over: 14ft wide
Height escort required over: 14ft tall

Front escort >12ft, both escorts >14ft. State police escort required for loads >16ft wide or >200,000 lbs.

Travel Restrictions

Night travel: Generally restricted
Weekend travel: Generally allowed
Sunday travel: Generally allowed

Night travel restricted. Urban Chicago area has additional time restrictions.

Holiday blackouts: Major US holidays.

Superload Thresholds

Width over: 16ft
Length over: 150ft
Weight over: 200,000 lbs

Estimated Permit Cost Verify before relying

Fee-table structure confirmed in law, but the actual dollar tables were not retrievable as readable text

Source: 625 ILCS 5/15-301, 92 Ill. Admin. Code Part 554/2520 — verify current fee with the permit office before budgeting a move.

Permit fee only — does not include escort/pilot-car service costs (market-rate, arranged separately) or third-party permit-service fees. This is an estimate for planning purposes, not a quote.

Get a Permit

Online portal: https://www.ilsos.gov/departments/vehicles/permits/
Phone: 1-217-785-1107

Chicago metro area restrictions on I-90/94 and other interstates. Posted bridge weights common.

Planning a move through Illinois?

Plan a truck-legal route that checks bridges and construction, or find a vetted transporter or escort.

Try the Route Planner Find an Escort