The short version: a Indiana single-trip permit starts at $20 before bands, overweight and the transaction charge; an escort is first required at over 12'4" wide; and the load becomes a superload at a gross weight the state does not publish. Everything below carries the Indiana document it came from, that document's own revision date, and the date we read it.
Corridor
1. Where the load goes next
The jurisdictions this one borders, each chip carrying the fact that decides whether that crossing is the expensive one — so the row is itself a small comparison. A multi-state lane is the actual job, and from here it is one click per state rather than a return to an alphabetical index.
Anything over one of these needs a permit. Every value links to the document that sets it.
Measure
Legal limit
Width
8'6"rev. · read DOR fee sheet: a permit is required above "8 feet, 6 inches in width", among the other listed limits.
Height
13'6"rev. · read DOR fee sheet: "13 feet, 6 inches in height".
Semitrailer length
53'rev. · read DOR fee sheet: "53 feet in length for a loaded semi-tractor-trailer connected by a fifth wheel hookup".
Overall length
None published
Kingpin to rear axle
None published
Front overhang
None published
Rear overhang
None published
Gross weight
80,000 lbrev. · read DOR fee sheet: a permit is required "over 80,000 lbs. gross vehicle weight and/or over axle weights according Federal Bridge Laws".
Single axle
20,000 lbrev. · read IC 9-20-4: "an axle weight in excess of twenty thousand (20,000) pounds". A separate limit of 800 lb per inch of tire width measured between the rim flanges also applies and is not modelled, because a quote does not collect tyre width.
Tandem axle
34,000 lbrev. · read IC 9-20-4: "(A) Thirty-four thousand (34,000) pounds total weight. (B) Twenty thousand (20,000) pounds on an individual axle in a tandem group."
Not one number per dimension — the whole staircase. Each row is a condition the state actually publishes, what it requires when that condition holds, and the clause it comes from. Where a rule requires escorts and the source states no number, the row says that in the source's own words rather than reporting no requirement.
When
What is required
Source
width over 12'4" or overall length over 110' or height over 14'6"
1 police escort in front1 police escort behindEscorts required; the source states no number — at least 2. Published as: “At least front and rear police escorts are required; required slowdowns may necessitate more at the ISP’s discretion.”Cannot be reduced to a number: Indiana requires "at least front and rear police escorts" over 17 ft wide, and "required slowdowns may necessitate more at the ISP's discretion". The rates ARE published and are citable: the Indiana State Police superload escort agreement effective 1 March 2019 sets a sworn trooper at $43.00 per hour and a motor carrier inspector at $34.00 per hour, each escort must include at least one sworn trooper, and hours are computed round trip from the officers' homes, with vehicle mileage at Indiana's approved state rate of $0.64 per mile from 7 August 2026. The hours, the officer count and the officers' home locations are all set by ISP on the day, so no police-escort amount is included in the permit total. The 2019 agreement is more than three years old and remains the document ISP links.
gross weight from 200,000 lb (exclusive) to 250,000 lb (exclusive) and not (Has the issued permit confirmed that the route uses only interstates and requires no slowdowns?)
Escorts required; the source states no number — at least 1. Published as: “An ISP escort is required unless the route is interstate-only, has no required slowdowns, and the vehicle is under 250,000 lb GVW.”Cannot be reduced to a number: Indiana Form M-204S requires an ISP escort over 200,000 lb unless all three stated exception conditions are satisfied. Weight alone resolves the under-250,000-lb condition, but the approved route and required slowdowns are permit facts. Until those facts are confirmed, police remains unresolved and no officer count or cost is invented.
Escorts required; the source states no number — at least 1. Published as: “The M-204S exception applies only when the vehicle weighs less than 250,000 lb GVW.”Cannot be reduced to a number: At 250,000 lb or more, the published exception cannot be satisfied because it expressly requires the vehicle to weigh less than 250,000 lb. ISP must assign the officer count, hours, vehicles and travel; no police amount is invented.
$20rev. · read The July 2026 DOR fee sheet prints "$20.00 + $0.35 per mile for vehicles up to 108,000 lbs." and "$20.00: up to 95' in length, 13'6" in height, 12'4" wide" — the same $20 reached from the overweight and the oversize side.
Transaction / card
None publishedrev. · read The rule's complete administrative-fee list ("The administrative fees for oversize/overweight vehicle permits are as follows") is flat dollars only and states no percentage-based OS/OW permit surcharge. UNKNOWN, recorded and not filled in: whether the live permit system adds a separate credit-card or third-party payment-processing charge. Any such charge would be the processor's, not Indiana's.
Route analysis review
Not yet covered
Route with no bridges
Not yet covered
Dimension bands
Band
Fee
within 12 ft 4 in wide, 13 ft 6 in high and 95 ft long — no increment above the $20 base fee
$0rev. · read 105 IAC 10-1.5-3(b)(1): "Twenty dollars ($20) for a vehicle with dimensions not more than: (A) one hundred forty-eight (148) inches wide; (B) one hundred sixty-two (162) inches high; or (C) ninety-five (95) feet long." That $20 IS the base fee held in `permitBaseFeeUsd`, so this band adds nothing — the two together are the published $20 total.
over 12 ft 4 in up to 16 ft wide — $10 above the base fee
$10rev. · read 105 IAC 10-1.5-3(b)(2): "Thirty dollars ($30) for a vehicle with dimensions that exceed: (A) one hundred forty-eight (148) inches wide ..." — $20 base plus this $10 increment. Bounded above by the superload dimensions, where the $40 band begins.
over 13 ft 6 in up to 15 ft high, within 12 ft 4 in wide — $10 above the base fee
$10rev. · read The same $30 band reached on height alone — "(B) one hundred sixty-two (162) inches high". Bounded at the $20 width ceiling so it cannot also match a load already covered by the width row above; two matching rows with different bounds would be read by the resolver as two sources disagreeing, which they are not.
over 95 ft up to 110 ft long, within 12 ft 4 in wide and 13 ft 6 in high — $10 above the base fee
$10rev. · read The same $30 band reached on length alone — "(C) ninety-five (95) feet long". The July 2026 DOR fee sheet prints the same window as "between 96' and 110' in length".
over 16 ft wide — superload; $20 above the base fee
$20rev. · read 105 IAC 10-1.5-3(b)(3): "Forty dollars ($40) for an oversize/overweight superload", and the rule's superload definition is "more than fifteen (15) feet high; more than sixteen (16) feet wide; or more than one hundred ten (110) feet long" — $20 base plus this $20 increment. A load in this band is a superload on the rule's own reading and the engine will refuse to price it; the row exists so the schedule is complete. The DOR documents describe this $40 row incoherently — the July 2026 fee sheet prints "$40.00: up to 95' in length, 16' wide, 15' tall and 80,000 lbs." while the undated DOR fees webpage prints "over 110' length, 16' wide, 15' tall, 80,000 lbs." — so the rule's structure is used and the DOR wording is recorded rather than encoded.
over 15 ft high, within 16 ft wide — superload; $20 above the base fee
$20rev. · read The same $40 superload band reached on height alone, bounded at 16 ft wide for the same mutual-exclusivity reason as the $10 rows.
over 110 ft long, within 16 ft wide and 15 ft high — superload; $20 above the base fee
$20rev. · read The same $40 superload band reached on length alone.
Rounding is not a detail here: the same rate over the same miles can differ by a whole increment depending on which pounds are rounded and in which direction, so the rule is printed with the source's own words rather than applied silently.
A permit priced against an unposted-road assumption in March is simply wrong, and wrong in the expensive direction. This is the window we watch, the basis for that window in the state's own orders or statute, and the authority that posts it.
Seasonal posting
Programme
Local roads only — the state system is not postedINDOT does not seasonally restrict the state highway system. Indiana frost laws are posted by county highway departments on county roads.
The dimensions at which Indiana triggers a physical route inspection or an engineering review, and what the agency charges to review it.
Measurement
Inspection / review trigger
Width
over 18'undated document · read "WIDTH EXCEEDS 18 FEET AND/OR LENGTH EXCEEDS 130 FEET WITHOUT REAR STEERABLE AXLE — Route survey will be required prior to issuance."
Height
over 17'undated document · read "HEIGHT EXCEEDS 17 FEET — The carrier or the driver must complete a route survey." Where no utility lines interfere an affidavit is accepted; where they do, letters from the utility owners are required.
Length
over 130'undated document · read The 130 ft trigger is published as applying to a load "WITHOUT REAR STEERABLE AXLE". A quote does not collect the trailer configuration, so the survey is flagged for every load over 130 ft and the qualifier is stated here.
Police escorts
9. Police escorts
Indiana State Police publishes a rate. One officer costs at least an amount the schedule does not let us compute before mileage.
A motor carrier inspector is $34.00 per hour and each escort must include at least one sworn trooper, so the mix of officers — and therefore the blended rate — is set by ISP.
Hours are computed round trip from the officers' HOMES, which are not known before ISP assigns them, so no minimum can be derived from the route.
Vehicle mileage at Indiana's approved state rate of $0.64 per mile from 7 August 2026, applied to the same round trip from the officers' homes.
Holiday, curfew and night-travel windows are not yet encoded for Indiana. The seasonal picture — which is a different question — is in section 6 above.
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
11. 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
12. Where the sources disagree
Two official documents, both in effect, giving different answers. Neither has been adopted.
superload gross-weight threshold
over 200,000 lbIndiana DOR — Oversize/Overweight Vehicle Permit Fees (July 2026, PDF) — legal limits; single-trip oversize and overweight tables; "Whichever of the calculated oversize or overweight fees is greater"; super load thresholds. Month-only date, recorded as the 1st. rev. · read
over 17'Indiana DOR — Oversize/Overweight Vehicle Permit Fees (July 2026, PDF) — legal limits; single-trip oversize and overweight tables; "Whichever of the calculated oversize or overweight fees is greater"; super load thresholds. Month-only date, recorded as the 1st. rev. · read
Ind. Code Title 9 — Motor Vehicles (size and weight limits) — Indiana General Assembly — IC 9-20-4-1 bridge formula and 80,000 lb ceiling; axle and tandem limits; IC 9-20-13-2 semitrailer unit 53 ft. Year-only date, recorded as 1 January. rev. · read
Indiana DOR — Motor Carrier Services frequently asked questions — Indiana Department of Revenue — "A 'Superload' is any load that exceeds 15 feet high, 16 feet wide, 110 feet long, and/or 120,000 pounds, or fails the overload analysis." undated document · read
Indiana DOR — Oversize/Overweight Vehicle Permit Fees (July 2026, PDF) — Indiana Department of Revenue, Motor Carrier Services — legal limits; single-trip oversize and overweight tables; "Whichever of the calculated oversize or overweight fees is greater"; super load thresholds. Month-only date, recorded as the 1st. rev. · read
Indiana DOR Form M-204S — Superload permit provisions (PDF) — Indiana Department of Revenue — police escort over 200,000 lb with the interstate-only exception; width over 17 ft; route survey triggers; bucket-truck requirement over 15 ft high undated document · read
The single-trip base is $20, before the dimension bands, the overweight component and the transaction charge. The base alone is rarely what is paid.
When does Indiana require a pilot car?
The first width trigger is over 12'4".
What is a superload in Indiana?
Indiana publishes no gross-weight superload threshold in the documents on file — see the superload section, which shows the dimensional triggers it does publish.
Do Indiana's own documents contradict each other?
Yes, in 2 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.