# Washington — Maximum legal vehicle size and weight limits by US state

For Washington, maximum height is fourteen feet; statute / authority citation is RCW 46.44.020, recorded from its source on 2026-08-18.

- **State:** Washington _(our reading, not quoted from the source)_
- **Maximum height:** fourteen feet _(verified: appears in the quote below)_
- **Statute / authority citation:** RCW 46.44.020 _(our reading, not quoted from the source)_
- **Maximum width:** eight and one-half feet _(per app.leg.wa.gov, not stated by the source above)_
- **Maximum semitrailer length:** 53 feet _(per app.leg.wa.gov, not stated by the source above)_

## What the source says

> It is unlawful for any vehicle unladen or with load to exceed a height of fourteen feet above the level surface upon which the vehicle stands.

## Sources disagree

More than one authority states this, and they do not state the same
thing. Both are reproduced with the source each came from.

### Statute / authority citation

app.leg.wa.gov says statute / authority citation is **RCW 46.44.020**, as of 2026-08-18.

> It is unlawful for any vehicle unladen or with load to exceed a height of fourteen feet above the level surface upon which the vehicle stands.

Source: https://app.leg.wa.gov/RCW/default.aspx?cite=46.44.020

app.leg.wa.gov says statute / authority citation is **RCW 46.44.010**, as of 2026-08-18.

> The total outside width of any vehicle or load thereon must not exceed eight and one-half feet;

Source: https://app.leg.wa.gov/RCW/default.aspx?cite=46.44.010

app.leg.wa.gov says statute / authority citation is **RCW 46.44.030**, as of 2026-08-18.

> (2)(a) It is unlawful for any person to operate upon the public highways of this state any combination consisting of a tractor and semitrailer that has a semitrailer length in excess of 53 feet or a combination consisting of a tractor and two trailers in which the combined length of the trailers exceeds 61 feet, with or without load.

Source: https://app.leg.wa.gov/RCW/default.aspx?cite=46.44.030


## Source

- https://app.leg.wa.gov/RCW/default.aspx?cite=46.44.020
- https://app.leg.wa.gov/RCW/default.aspx?cite=46.44.010
- https://app.leg.wa.gov/RCW/default.aspx?cite=46.44.030

Last verified: 2026-08-18. Review by: 2027-08-18.
Part of [Maximum legal vehicle size and weight limits by US state](https://referencesource.org/truck-size-weight-limits-by-state/).