The District of Columbia answer
Legal limits
First escort trigger
- Width
- No trigger published
- Height
- No trigger published
- Length
- No trigger published
- Rear overhang
- No trigger published
- Gross weight
- No trigger published
What the paper costs
- Single-trip base
- $30 · caveat ↓rev. · read
- Transaction / card
- None published · caveat ↓rev. · read
- How overweight is priced
- Included in the base permit feerev. · read
- Superload above
- The state publishes none
The short version: a District of Columbia single-trip permit starts at $30 before bands, overweight and the transaction charge; an escort is first required at no width the state publishes; and the load becomes a superload at a gross weight the state does not publish. Everything below carries the District of Columbia document it came from, that document's own revision date, and the date we read it.
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.
2. District of Columbia legal limits
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 DDOT FAQ: a permit is required for "Any vehicle wider than 8 feet – 6 inches (including load)". Corroborates the regulation from the operational document, and confirms the measurement is taken INCLUDING the load. |
| Height | 13'6"rev. · read DDOT FAQ: a permit is required for "A vehicle higher than 13 feet – 6 inches (including load)". |
| Semitrailer length | Not yet covered |
| Overall length | 55'rev. · read DDOT FAQ: a permit is required for "A vehicle with a combined overall length of over 55 feet". EXCLUSIVE. The FAQ separately requires a permit for "Any vehicle, other than a bus, over 40 feet long" — that 40 ft figure governs a SINGLE vehicle and is not the combination limit; applying it to a tractor-semitrailer would be wrong in the other direction. Buses are permitted to 60 ft and are not priced here. CONFINED (2026-11-07): NOT applied to a tractor with a semitrailer of 53 ft or less, for which 23 CFR 658.13(b)(3) preempts any overall-length cap on the National Network and on reasonable access (658.19) — see `dc-55ft-beyond-reasonable-access`. Kept for every other combination, and for a quote that does not state its trailer length. |
| Kingpin to rear axle | None published |
| Front overhang | None published |
| Rear overhang | None published |
| Gross weight | 80,000 lbrev. · read The FAQ requires a permit for "Any vehicle exceeding the District axle and gross weight limitations". The two DDOT documents agree on every weight figure — it is only the ESCORT thresholds they contradict. |
| Single axle | 21,000 lbrev. · read "Any vehicle exceeding the District axle and gross weight limitations 21,000 for single axle, 34,000 for tandem axle". EXCLUSIVE. NOTE THAT 21,000 lb IS 1,000 lb ABOVE THE FEDERAL 20,000: the District is more permissive on the single axle than most of this corpus, and assuming the federal figure would flag a compliant 20,500 lb steer as overweight. |
| Tandem axle | 34,000 lbrev. · read "34,000 for tandem axle". EXCLUSIVE, and identical to the federal figure. |
3. The District of Columbia escort ladder
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.
No in-effect rule on file puts an escort on a load here. That is what the documents say, not a gap we are papering over — the rule list below is every escort rule we hold for this jurisdiction.
The first trigger in each dimension
| Measurement | First escort trigger | First police escort trigger |
|---|---|---|
| Width | None published | None published |
| Height | None published | None published |
| Length | None published | None published |
| Rear overhang | None published | None published |
| Gross weight | None published | None published |
The same rules restated in plain sentences3 rules
- 15 ft wide or more, 150,000 lb or more, or over 14 ft 6 in high — MPD decides whether a police escort is required, and publishes no rate. — The document states no revision date in its body. Re-read 2026-11-07: the PDF's own creation date is 2023-09-11 (Microsoft Word for Microsoft 365), which is recorded as the revision. It is the CURRENT edition of the District's "Oversize and Overweight Vehicles — Frequently Asked Questions"; overweight_vehicles.pdf is the 2011 edition of the same FAQ. rev. · read
- Over 75 ft long, 12 ft wide, 13 ft 6 in high or 120,000 lb — DDOT recommends a pilot/escort vehicle; it does not require one. — The document states no revision date in its body. Re-read 2026-11-07: the PDF's own creation date is 2023-09-11 (Microsoft Word for Microsoft 365), which is recorded as the revision. It is the CURRENT edition of the District's "Oversize and Overweight Vehicles — Frequently Asked Questions"; overweight_vehicles.pdf is the 2011 edition of the same FAQ. rev. · read
- A tractor-semitrailer over 55 ft overall — federally exempt on the National Network and reasonable access, not on other District streets. — Checked on Cornell LII on 2026-11-07 because the eCFR redirected (state-matrix dispute verdict §4.2). 658.13(a) applies the length rules "on the National Network or in transit between these highways and terminals or service locations"; 658.13(b)(3): "No State shall impose an overall length limitation on commercial vehicles operating in truck tractor-semitrailer or truck tractor, semitrailer, trailer combinations." The District is a "State" for 23 CFR 658. undated document · read
4. District of Columbia single-trip permit fees
| Charge | Amount |
|---|---|
| Single-trip base | $30rev. · read "Single Trip: $30.00 one way or $50.00 roundtrip". overweight_vehicles.pdf states the same two prices in different words — "The fee is $30 for a trip being oversized only for entry or exit to the District" and "The fee is $50 when a vehicle's land load will be oversized both coming into and exiting the District" — so the four printed rows across the two documents are TWO fees, not four. The District also sells an $85.00/yr annual tag for tractor trailers and for truck cranes and concrete pump trucks; those are annual products and are not a single-trip alternative. A "Dump Truck, Cement Mixer & Trash Truck" annual tag is mentioned in the FAQ with no amount, and no amount is invented for it here. |
| Transaction / card | None publishedrev. · read AN AFFIRMATIVE ABSENCE. Neither DDOT document names a service, processing, administrative or percentage charge on top of the permit fee. Contrast Texas, where Transp. Code § 623.076(b-1) authorises $0.25 plus 2.25%. Nothing is added here, so the $30 the shipper sees is the $30 the District charges. |
| Route analysis review | Not yet covered |
| Route with no bridges | Not yet covered |
5. How District of Columbia prices overweight
Included in the base permit fee. DDOT OS/OW FAQ (2023): a permit is required for "Any vehicle exceeding the District axle and gross weight limitations 21,000 for single axle, 34,000 for tandem axle", and "How much will the permit cost? Single Trip: $30.00 one way or $50.00 roundtrip". No weight band, per-pound, per-ton or per-mile charge is printed anywhere in the FAQ or in DCMR Title 18 ch. 25, so the flat $30 in permitBaseFeeUsd is the whole District overweight fee.
There is no weight schedule to print, and under this model there is not supposed to be one.
6. District of Columbia seasonal posting windows
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.
District of Columbia is not in the seasonal-restriction registry, so we hold no posting window for it and are not inventing one.
7. District of Columbia's superload threshold
Above one of these, the state stops issuing over the counter and prices the move after an engineering review.
| Trigger | Threshold |
|---|---|
| Gross weight | None published |
| Width | None published |
| Height | None published |
| Length | None published |
| Short axle spacing | Not yet covered |
8. Route survey and bridge review
The dimensions at which District of Columbia triggers a physical route inspection or an engineering review, and what the agency charges to review it.
| Measurement | Inspection / review trigger |
|---|---|
| Width | Not yet covered |
| Height | Not yet covered |
| Length | Not yet covered |
9. Police escorts
Charges exist and no schedule is published. The District publishes no police escort RATE, and its trigger is a discretion. OSOWFAQ_2023.pdf (2023-09-11): "Police escort may be required at the discretion of the Metropolitan Police Department (MPD). Applicant must contact MPD at motorcarrier@dc.gov to determine if police escort is required" at 15 ft wide or more, 150,000 lb or more, or over 14 ft 6 in high. Neither the FAQ, the DDOT site nor MPD publishes an hourly rate, minimum hours, mileage, per diem or cancellation charge. (The 2011 edition of the FAQ, overweight_vehicles.pdf, printed a "Yes for" list at 12 ft / 75 ft / 13 ft 6 in / 120,000 lb; it is superseded.) DCMR Title 18 chapter 25 was read in full.
This is a positive finding: we searched and there is nothing to quote. It is not the same as "no police escort is ever required here".
10. When you can move it
Holiday, curfew and night-travel windows are not yet encoded for District of Columbia. 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.
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.
12. What this does not include
Named rather than gestured at, because each of these can exceed the permit itself. Every item is listed; open one for why it is excluded.
Line haul, fuel and driver time
This is a permit fee, not a freight rate.
Civilian pilot car rates
We hold no rate data, and the two commercial sites that publish market rates disagree by nearly a factor of two on the same service.
Route-survey engineering
The agency's review fee is shown where the state publishes one; the engineer's own fee is a private cost with no schedule.
Bonds and escrow
Set per move by the agency, and in at least one state the escort is billed at actual cost against it.
Utility coordination and line lifts
Arranged with each utility, priced by each utility.
Second-issuer permits
A toll, bridge or city authority inside the same state issues its own permit, and a state total that omits it is missing a whole permit.
Need a pilot car for this lane? Browse the pilot car & escort directory.
13. Every source behind this page (4)
Every document behind District of Columbia4 sources
- 23 CFR 658.13 — Length (and 658.19, reasonable access) — Federal Highway Administration (via Cornell LII) — Checked on Cornell LII on 2026-11-07 because the eCFR redirected (state-matrix dispute verdict §4.2). 658.13(a) applies the length rules "on the National Network or in transit between these highways and terminals or service locations"; 658.13(b)(3): "No State shall impose an overall length limitation on commercial vehicles operating in truck tractor-semitrailer or truck tractor, semitrailer, trailer combinations." The District is a "State" for 23 CFR 658.
undated document · read secondary host - DCMR Title 18 § 2501 — Width, Height and Length of Vehicles — District of Columbia Municipal Regulations — "Final Rulemaking published at 33 DCR 3716 (June 20, 1986)". An enactment date for a rule still in force and restated verbatim in DDOT's 2023 FAQ — not a stale document.
rev. · read - DDOT — Oversize/Overweight Vehicle Permit FAQ — District Department of Transportation — The document states no revision date in its body. Re-read 2026-11-07: the PDF's own creation date is 2023-09-11 (Microsoft Word for Microsoft 365), which is recorded as the revision. It is the CURRENT edition of the District's "Oversize and Overweight Vehicles — Frequently Asked Questions"; overweight_vehicles.pdf is the 2011 edition of the same FAQ.
rev. · read - DDOT — Overweight Vehicles — District Department of Transportation — SUPERSEDED (2026-11-07). Re-read: the PDF was created 2011-10-06 and last modified 2011-10-26 (Acrobat PDFMaker 8.1), and its text is the 2011 edition of the same "Oversize and Overweight Vehicles — Frequently Asked Questions" that OSOWFAQ_2023.pdf republishes — same questions, same order, with the police-escort answer rewritten in 2023. It is not a second current source, so its rows end the day before the 2023 edition and its 12 ft / 75 ft / 13 ft 6 in / 120,000 lb "Yes for" police list no longer contradicts anything.
rev. · read
Questions
How much is an oversize permit in District of Columbia?
The single-trip base is $30, before the dimension bands, the overweight component and the transaction charge. The base alone is rarely what is paid.
When does District of Columbia require a pilot car?
District of Columbia publishes no numeric width trigger for an escort in the documents on file. That does not mean none is ever required — see the escort section above.
What is a superload in District of Columbia?
District of Columbia publishes no gross-weight superload threshold in the documents on file — see the superload section, which shows the dimensional triggers it does publish.