Best GPS Apps for Oversized Loads in 2026
If the permit says 14 feet 4 inches, your GPS needs to know that before you move an inch. CoPilot Truck GPS is the best primary router here. Trucker Path is the free pick, Rand McNally IntelliRoute fits a small fleet, Garmin dezl makes a solid cab backup, and Sygic Truck GPS is the useful choice when the load crosses into Canada.
TL;DR
CoPilot Truck GPS wins the gps routing app oversized loads category for custom height, weight and axle-count inputs on the PC*MILER engine.
Trucker Path is the free pick for low-bridge and weigh-station alerts, though live crowd data needs a signal.
Rand McNally IntelliRoute suits small open-deck fleets that need dispatch-level route data across more than one truck.
No consumer GPS app replaces the route printed on your oversize permit. It routes you legal, not permitted.
Your permit route still runs the show
A step deck with an excavator does not get the same route as a dry van. Neither does a dually pulling a 40-foot gooseneck. Federal legal limits sit at 80,000 lbs, 8'6" wide, 13'6" tall and 53' long. Go past one, and the state gives you a route. A consumer app can miss your height, ignore your axle count and point you at a bridge you were never cleared to cross.
OpenDeck, powered by Load Work, handles the freight side for flatbed, hotshot, step deck and RGN carriers. The app in the cab handles turns. It needs your actual dimensions, but the permit remains the final word.
What makes the best GPS app for oversized loads
Truck-specific routing that takes real height, weight and axle inputs, not a generic car route
Low-bridge and weight-restriction warnings built from a verified clearance database
Offline map coverage for the rural corridors oversize loads often run to avoid weigh stations and low urban bridges
Live alerts for weigh stations, traffic and road hazards when cell signal holds
Multi-stop and fleet dispatch support for shops running more than one truck
Hazmat and cross-border routing when the lane calls for it
At a glance
App | Best for | Standout feature | Key limitation |
CoPilot Truck GPS | Custom dimension routing | PC*MILER routing engine with full offline maps | Live traffic alerts are basic compared to crowd-sourced apps |
Trucker Path | Free base routing and alerts | Live crowd alerts for weigh stations and hazards | Full truck-specific routing sits behind the Pro tier, and offline maps are limited |
Rand McNally IntelliRoute | Small-fleet dispatch | Dispatch-level route data across multiple trucks | Live crowd alerts are more limited than dedicated alert apps |
Garmin dezl | Backup hardware in the cab | Dedicated device that doesn't rely on a phone data plan | No live crowd-sourced alerts |
Sygic Truck GPS | Cross-border oversize moves | Full offline maps plus purchasable regional map packs | Map packs are a separate purchase from the base app |
1. CoPilot Truck GPS: best for custom dimension routing
CoPilot Truck GPS runs on the PC*MILER routing engine, the same routing logic used by fleet management platforms industry-wide. You enter your rig's height, weight, axle count and hazmat status, and it builds a route around legally posted bridge heights and weight-restricted roads instead of guessing.
CoPilot Truck GPS pros:
Full offline maps, so a loaded step deck running a rural corridor doesn't lose routing when the signal drops
Custom height, weight and axle-count inputs specific to your actual rig, not a generic truck profile
Route optimization built for multi-stop trips, useful when a lane includes a pilot car meet point
CoPilot Truck GPS cons:
Live traffic and hazard alerts are basic next to crowd-sourced apps like Trucker Path
It routes you legal, not permitted, so the state's printed permit route still governs an oversize move
Best for: owner-operators and small fleets who need the rig's real dimensions built into every route, not just a truck-shaped guess.
Verdict: Buy.
2. Trucker Path: best free option for alerts
Trucker Path is the free pick in this category. It gives you truck-specific routing on its Pro tier plus live, crowd-sourced alerts for weigh stations, parking and road hazards from other drivers on the road right now.
Trucker Path pros:
Free base app with a large driver community feeding live alerts
Weigh station and parking data is strong, useful when you're running an escorted load and need to plan a stop that fits the convoy
Low cost of entry for a new hotshot or flatbed operator building out a tech stack
Trucker Path cons:
Full truck-specific routing logic sits behind the paid Pro tier, not the free version
Offline map coverage is limited, so it leans on a live data connection more than CoPilot or Sygic
Best for: a new or budget-conscious open-deck operator who wants live driver-reported alerts without a subscription commitment.
Verdict: Buy for the free tier; Consider the Pro upgrade once you're running regular oversize lanes.
3. Rand McNally IntelliRoute: best for small-fleet dispatch
Rand McNally IntelliRoute is built around dispatch-level route data, useful once you're running more than one truck on open-deck freight and need visibility into where each rig sits on its route, not just turn-by-turn directions for a single cab.
Rand McNally IntelliRoute pros:
Dispatch-level route data that works across more than one truck
Full offline maps for corridors where a step deck or RGN runs without steady signal
A long track record with fleet routing, going back further than most app-only competitors
Rand McNally IntelliRoute cons:
Live crowd-sourced alerts are more limited than Trucker Path's driver-reported feed
The subscription and hardware model costs more to stand up than a phone-only app
Best for: a 2-10 truck open-deck fleet that needs one dispatcher tracking several rigs on different oversize lanes at once.
Verdict: Consider if you're dispatching more than one truck; Skip if you're a single owner-operator.
4. Garmin dezl: best backup hardware in the cab
Garmin dezl is a dedicated GPS device rather than a phone app, which makes it the right backup for a cab that already runs a phone-based primary router. A dedicated unit keeps routing running even if a phone dies, loses signal, or gets tied up on a call with a broker.
Garmin dezl pros:
Doesn't depend on a phone's battery, data plan or screen size
Offline maps built into the hardware
A mounted, dedicated screen that's easier to glance at than a phone clipped to a dash mount
Garmin dezl cons:
No live crowd-sourced alerts, so it won't warn you about a weigh station another driver just flagged
A second device to buy, mount and keep updated alongside your primary routing app
Best for: a cab that wants a hardware backup to a phone-based primary GPS, especially on long oversize runs where a dead phone isn't an option.
Verdict: Consider as a backup; Skip if budget only covers one routing tool.
5. Sygic Truck GPS: best for cross-border oversize moves
Sygic Truck GPS pairs a free base app with purchasable offline map packs by region, including Canada, which makes it a fit for open-deck lanes that cross the border with machinery, steel or ag equipment.
Sygic Truck GPS pros:
Full offline maps once you buy the relevant regional map pack
Truck-specific bridge clearance routing built in
Covers Canadian routes cleanly for cross-border heavy haul and flatbed lanes
Sygic Truck GPS cons:
Map packs are a separate purchase from the base app, so the total setup takes a few extra steps
Live alert features lag behind Trucker Path's crowd-sourced data
Best for: open-deck carriers running lanes into Canada with machinery, steel or farm equipment.
Verdict: Buy if your lanes cross the border; Skip if you run domestic-only freight.
How we ranked these apps
Every pick here was scored against the criteria above: real truck-specific routing (not a car route with a truck skin), verified bridge clearance data, offline coverage for rural oversize corridors, live alert quality, and fleet-versus-solo fit. None of these apps issues or tracks your state oversize permit; that route still comes from the permitting agency and belongs in the cab alongside whichever app you run. Reading up on Alabama's oversize permit rules shows how specific a state's printed route can get, right down to the bridge and the exit.
Which GPS app should you choose?
Choose CoPilot Truck GPS if you want one primary router that takes your rig's actual height, weight and axle count and keeps working offline through rural corridors. Choose Trucker Path if you're starting out and want free, crowd-sourced alerts on weigh stations and hazards before you commit to a paid tool. Choose Rand McNally IntelliRoute if you're dispatching more than one open-deck truck and need visibility across the fleet, not just one cab. Pair whichever primary app you pick with the actual axle and weight math from your axle-group planning for lowboy and RGN loads before you accept a heavy load, since no app calculates that for you.
FAQ
What is the best GPS app for oversized loads in 2026?
CoPilot Truck GPS is the best overall pick for oversized loads in 2026 because it runs on the PC*MILER routing engine and takes custom height, weight and axle-count inputs with full offline maps. Trucker Path is the best free alternative for live driver-reported alerts.
Do GPS apps know my oversize permit route?
No consumer GPS app tracks or enforces your state-issued oversize permit route. These apps route you around legally posted bridge heights and weight limits, but the printed permit route from the state still governs where an oversize or superload move can travel.
Is Trucker Path good enough for oversized loads?
Trucker Path's free tier gives solid crowd-sourced alerts for weigh stations and hazards, but its full truck-specific routing, the piece that matters most for an oversize load, sits behind the paid Pro tier.
Do I need offline maps for oversize routes?
Offline maps matter most on rural oversize corridors where cell signal drops. CoPilot Truck GPS, Rand McNally IntelliRoute and Sygic Truck GPS all offer full offline coverage; Trucker Path's offline maps are more limited.
What's the difference between CoPilot Truck GPS and Rand McNally IntelliRoute?
CoPilot Truck GPS is built for a single rig's custom dimension routing on the PC*MILER engine. Rand McNally IntelliRoute adds dispatch-level route data across multiple trucks, which fits a small fleet more than a solo operator.
Should I use a dedicated GPS device or a phone app for oversize hauling?
A dedicated device like Garmin dezl works well as a backup to a phone-based primary router since it doesn't depend on a phone's battery or data plan, though it lacks live crowd-sourced alerts that phone apps like Trucker Path provide.
What GPS app should I use for oversize loads crossing into Canada?
Sygic Truck GPS handles cross-border oversize moves well, with purchasable offline map packs covering Canadian routes alongside truck-specific bridge clearance routing.
Before you pull out
Enter the loaded dimensions, not last week's empty setup. The legal limits stay 80,000 lbs, 8'6" wide, 13'6" tall and 53' long no matter which screen is on your dash. Once you are over them, follow the state route. The app is backup, not permission.
Ready to pair better routing with better freight? Check flatbed, hotshot and step deck freight on the OpenDeck pricing page and move to Pro or Enterprise on Load Work.
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