{"id":341,"date":"2026-01-24T11:15:00","date_gmt":"2026-01-24T11:15:00","guid":{"rendered":"https:\/\/welocity.ca\/blogs\/?p=341"},"modified":"2026-02-22T10:53:39","modified_gmt":"2026-02-22T10:53:39","slug":"truck-weight-and-dimension-limits-canada-us","status":"publish","type":"post","link":"https:\/\/welocity.ca\/blogs\/truck-weight-and-dimension-limits-canada-us\/","title":{"rendered":"Truck Weight and Dimension Limits in Canada and US"},"content":{"rendered":"\n<p>Cross-border freight gets complicated fast because truck weight and dimension limits Canada US aren\u2019t governed by one single rulebook. Canada uses provincial\/territorial rules that are often aligned through an interprovincial MOU, while the U.S. applies federal standards on the Interstate\/National Network, plus state-specific rules off those routes.<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#truck-weight-and-dimension-limits-canada-us-whats-standard-vs-local\">Truck Weight and Dimension Limits Canada US: What\u2019s \u201cStandard\u201d vs Local<\/a><\/li><li><a href=\"#quick-reference-common-commercial-vehicle-size-limits\">Quick Reference: Common Commercial Vehicle Size Limits<\/a><ul><li><a href=\"#canada-common-mou-baseline-for-tractor-semitrailer\">Canada (common MOU baseline for tractor\u2013semitrailer)<\/a><\/li><li><a href=\"#united-states-national-network-interstate-baseline\">United States (National Network \/ Interstate baseline)<\/a><\/li><\/ul><\/li><li><a href=\"#axle-weight-limits-and-legal-gross-vehicle-weight\">Axle Weight Limits and Legal Gross Vehicle Weight<\/a><ul><li><a href=\"#u-s-federal-weight-limits-interstate-national-network\">U.S. federal weight limits (Interstate\/National Network)<\/a><\/li><li><a href=\"#canada-axle-limits-configuration-matters\">Canada axle limits: configuration matters<\/a><\/li><\/ul><\/li><li><a href=\"#bridge-formula-weight-limits-the-spacing-rule-in-the-u-s\">Bridge Formula Weight Limits: The \u201cSpacing\u201d Rule in the U.S.<\/a><\/li><li><a href=\"#oversize-permit-requirements-when-you-need-a-permit\">Oversize Permit Requirements: When You Need a Permit<\/a><ul><li><a href=\"#featured-snippet-checklist-common-permit-triggers\">Featured-snippet checklist: common permit triggers<\/a><\/li><li><a href=\"#what-permit-applications-usually-require\">What permit applications usually require<\/a><\/li><\/ul><\/li><li><a href=\"#practical-compliance-tips-for-dispatch-and-drivers\">Practical Compliance Tips for Dispatch and Drivers<\/a><\/li><li><a href=\"#stay-legal-protect-your-csa-safety-score-and-avoid-costly-delays\">Stay Legal, Protect Your CSA\/Safety Score, and Avoid Costly Delays<\/a><\/li><li><a href=\"#need-help-keeping-your-fleet-compliant-across-canada-and-the-u-s\">Need Help Keeping Your Fleet Compliant Across Canada and the U.S.?<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"truck-weight-and-dimension-limits-canada-us-whats-standard-vs-local\"><strong>Truck Weight and Dimension Limits Canada US: What\u2019s \u201cStandard\u201d vs Local<\/strong><\/h2>\n\n\n\n<p>Think of <a href=\"https:\/\/ops.fhwa.dot.gov\/freight\/policy\/rpt_congress\/truck_sw_laws\/app_a.htm\" target=\"_blank\" rel=\"noopener\">\u201cstandard\u201d limits<\/a> as the baseline for major routes, and \u201clocal\u201d limits as what applies on specific roads, cities, or secondary highways.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Canada:<\/strong> Provinces\/territories set enforceable limits, often harmonized through the federal\/provincial\/territorial Memorandum of Understanding (MOU) for interprovincial operations.<\/li>\n\n\n\n<li><strong>United States:<\/strong> Federal rules set baseline weights and width on the National Network\/Interstate System, with state rules and permits layered on top.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"quick-reference-common-commercial-vehicle-size-limits\"><strong>Quick Reference: Common Commercial Vehicle Size Limits<\/strong><\/h2>\n\n\n\n<p>Use this as a fast screening tool (always verify by route and jurisdiction).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"canada-common-mou-baseline-for-tractor-semitrailer\"><strong>Canada (common MOU baseline for tractor\u2013semitrailer)<\/strong><\/h3>\n\n\n\n<p>Typical maximums shown in MOU summary for a standard tractor\u2013semitrailer include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Overall width:<\/strong> 2.6 m<\/li>\n\n\n\n<li><strong>Overall height:<\/strong> 4.15 m<\/li>\n\n\n\n<li><strong>Overall length (tractor\u2013semitrailer):<\/strong> 23 m<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"united-states-national-network-interstate-baseline\"><strong>United States (National Network \/ Interstate baseline)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Width:<\/strong> 102 inches (\u2248 2.6 m) on the National Network (Hawaii has a specific exception).&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>Note: Height is largely state-controlled in the U.S. (many states commonly allow 13\u20196&#8243;, but it\u2019s not a single federal standard everywhere). Keep height checks route-specific.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"axle-weight-limits-and-legal-gross-vehicle-weight\"><strong>Axle Weight Limits and Legal Gross Vehicle Weight<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"u-s-federal-weight-limits-interstate-national-network\"><strong>U.S. federal weight limits (Interstate\/National Network)<\/strong><\/h3>\n\n\n\n<p>Federal baseline limits are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Single axle:<\/strong> 20,000 lb<\/li>\n\n\n\n<li><strong>Tandem axles:<\/strong> 34,000 lb<\/li>\n\n\n\n<li><strong>Gross vehicle weight:<\/strong> 80,000 lb (unless the bridge formula requires less)&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"canada-axle-limits-configuration-matters\"><strong>Canada axle limits: configuration matters<\/strong><\/h3>\n\n\n\n<p>In Canada, allowable weights depend heavily on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Axle group type (single\/tandem\/tridem)<\/li>\n\n\n\n<li>Axle spacing and load equalization<\/li>\n\n\n\n<li>Tire ratings and tire width limits (the MOU summary references tire-width-based limits, e.g., 10 kg\/mm of tire width in its conditions)<\/li>\n<\/ul>\n\n\n\n<p>Also, watch for seasonal (spring thaw) restrictions, which can temporarily lower allowable weights on certain roads.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"bridge-formula-weight-limits-the-spacing-rule-in-the-u-s\"><strong>Bridge Formula Weight Limits: The \u201cSpacing\u201d Rule in the U.S.<\/strong><\/h2>\n\n\n\n<p>Even if you\u2019re under 80,000 lb, axle spacing can still make you overweight on a specific axle group. That\u2019s where the Federal Bridge Formula comes in, it limits weight based on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Number of axles in a group<\/li>\n\n\n\n<li>Distance between the first and last axle in that group&nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>Related Article: <\/strong><a href=\"https:\/\/welocity.ca\/blogs\/hos-rules-canada-vs-us-differences-explained\/\">HOS Rules Canada vs US: Differences Explained<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"oversize-permit-requirements-when-you-need-a-permit\"><strong>Oversize Permit Requirements: When You Need a Permit<\/strong><\/h2>\n\n\n\n<p>In both Canada and the U.S., you typically need an oversize\/overweight permit when you exceed legal limits, especially for non-divisible loads (loads that can\u2019t be reasonably broken down). Federal definitions and permit logic commonly reference \u201cnondivisible\u201d criteria.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"featured-snippet-checklist-common-permit-triggers\"><strong>Featured-snippet checklist: common permit triggers<\/strong><\/h3>\n\n\n\n<p>You\u2019ll usually need permits when any of these are true:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Over legal width, height, or length<\/li>\n\n\n\n<li>Over legal axle weight limits or legal gross vehicle weight<\/li>\n\n\n\n<li>Your route includes restricted bridges\/roads<\/li>\n\n\n\n<li>You require escorts, route surveys, or travel-time restrictions<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-permit-applications-usually-require\"><strong>What permit applications usually require<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exact dimensions (overall and axle spacings)<\/li>\n\n\n\n<li>Accurate weights by axle group<\/li>\n\n\n\n<li>Commodity type (divisible vs non-divisible)<\/li>\n\n\n\n<li>Proposed route + origin\/destination<\/li>\n\n\n\n<li>Safety measures (signage, lighting, escorts)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"practical-compliance-tips-for-dispatch-and-drivers\"><strong>Practical Compliance Tips for Dispatch and Drivers<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Build route-based checks:<\/strong> legal on one highway doesn\u2019t mean legal on the next (especially off-network roads).<\/li>\n\n\n\n<li><strong>Standardize scale tickets:<\/strong> include axle group weights, not just gross.<\/li>\n\n\n\n<li><strong>Train on \u201cwhere\u201d rules apply:<\/strong> U.S. Interstate\/National Network vs state roads; Canada provincial primary routes vs secondary roads.<\/li>\n\n\n\n<li><strong>Keep a permit playbook:<\/strong> who applies, cutoff times, escort rules, and after-hours restrictions.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"stay-legal-protect-your-csa-safety-score-and-avoid-costly-delays\"><strong>Stay Legal, Protect Your CSA\/Safety Score, and Avoid Costly Delays<\/strong><\/h2>\n\n\n\n<p>Getting truck weight and dimension limits Canada US right is about more than avoiding tickets, it prevents out-of-service orders, route detours, and expensive rework at the shipper. Build a repeatable process: confirm axle weights, confirm axle spacing, confirm route rules, then lock permits in early when needed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"need-help-keeping-your-fleet-compliant-across-canada-and-the-u-s\"><strong>Need Help Keeping Your Fleet Compliant Across Canada and the U.S.?<\/strong><\/h2>\n\n\n\n<p>Reach out to us at <a href=\"http:\/\/www.welocity.ca\"><strong>www.welocity.ca<\/strong><\/a>, call <strong>905-901-1601<\/strong>, or email <strong><a href=\"https:\/\/welocity.ca\/contactUs\">info@welocity.ca<\/a><\/strong> if you need trucking-related services. Whether it\u2019s compliance training, ELD support, documentation best practices, or inspection readiness, we have you covered.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn Canada and US truck weight and dimension limits, axle limits, legal GVW, bridge formula basics, and oversize permit steps.  <\/p>\n","protected":false},"author":1,"featured_media":342,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[571,574,572,570,573,567],"class_list":["post-341","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-bridge-formula-weight-limits","tag-canada-us-truck-weight-and-dimension-limits","tag-commercial-vehicle-size-limits","tag-legal-gross-vehicle-weight","tag-practical-compliance-tips-for-truck-drivers","tag-truck-weight-and-dimension-limits-in-canada-and-us"],"_links":{"self":[{"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/posts\/341","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/comments?post=341"}],"version-history":[{"count":2,"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/posts\/341\/revisions"}],"predecessor-version":[{"id":1137,"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/posts\/341\/revisions\/1137"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/media\/342"}],"wp:attachment":[{"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/media?parent=341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/categories?post=341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/welocity.ca\/blogs\/wp-json\/wp\/v2\/tags?post=341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}