If you drive a truck, RV, or any vehicle taller than a standard passenger car, you already know the problem: Google Maps, Waze, and Apple Maps do not account for bridge clearances. They will happily route you straight into a 10-foot overpass.
The Federal Highway Administration estimates roughly 15,000 bridge strikes per year in the United States alone. A single hit can total a vehicle, destroy cargo, injure people, and result in fines that range from hundreds to tens of thousands of dollars. For independent owner-operators, a bridge strike can end a livelihood.
The good news is that several navigation apps now offer height-aware routing. The bad news is that they vary wildly in data quality, pricing, platform support, and actual bridge clearance coverage. This guide breaks down the top options available in 2026 so you can make an informed choice.
What to Look for in a Truck or RV Navigation App
Before comparing specific apps, here are the features that actually matter for bridge clearance safety:
- Bridge clearance database size and accuracy. How many bridges are tracked? Are clearances verified or just scraped from government databases?
- Directional hazard data. A bridge may be low on one side of a road but not the other. Does the app know the difference?
- Real-time rerouting: If a low bridge is detected on your current route, does the app automatically offer an alternative?
- Vehicle profile support: Can you save your vehicle height and switch between multiple vehicles?
- Turn-by-turn voice navigation: Critical for drivers who need hands-free guidance.
- Platform availability: iOS, Android, web, or all three?
- Offline capability: Cell coverage is spotty on rural highways. Can the app work without data?
- Pricing: What does it actually cost, and is there a free trial?
The Apps Compared
HeadRoom by Low Clearance Map
HeadRoom is a mobile navigation app built entirely around bridge clearance avoidance. It uses the Low Clearance Map database of 23,000+ verified bridge clearances across the US, Canada, and UK.
What sets it apart: HeadRoom is the only app with Hazard Headings: directional data on every bridge that tells you which direction the clearance restriction applies. This eliminates false warnings when you are on the safe side of a structure. It also offers Sentry Mode, a background monitoring feature that alerts you to nearby low bridges even when you are not actively navigating.
Features: Turn-by-turn voice navigation (Google Cloud TTS), SafeRoute vs Fastest Route toggle, vehicle profile management, automatic rerouting around detected hazards, cross-platform account sync with the Low Clearance Map web app.
Pricing: $4.99/month or $45/year (save 25%). 7-day free trial. One subscription covers both the mobile app and web platform.
Platforms: iOS (Android coming soon). Web app available at app.lowclearancemap.com.
Best for: Drivers who want the largest verified bridge database with directional accuracy, and anyone who values background monitoring via Sentry Mode.
SmartTruckRoute
SmartTruckRoute is one of the longest-running truck GPS apps on the market. It provides truck-specific routing that accounts for bridge heights, load limits, one-way designations, and sharp turns.
What sets it apart: Daily map and routing updates. Supports detailed truck dimension inputs including height, width, length, weight, axle count, and hazmat level. Also includes IFTA fuel tax logging, which is a unique feature for commercial drivers.
Features: Turn-by-turn navigation, speed limit warnings, truck stops and rest areas, weigh station alerts, weather overlays, alternative route options.
Pricing: $15.95 for 1 month, $59 for 1 year, or $129 for 3 years. No recurring auto-charge: you purchase the period upfront.
Platforms: iOS and Android.
Best for: Long-haul commercial truckers in the US, Canada, and Mexico who want a mature, feature-rich truck GPS with IFTA logging.
CoPilot Truck (by Trimble)
CoPilot Truck is an enterprise-grade navigation app powered by the PC*Miler routing engine: the same engine used by many fleet management platforms. It is designed specifically for commercial vehicles.
What sets it apart: Full offline capability with maps installed directly on your device. Uses legally posted bridge heights and will never route a vehicle onto a road where the bridge height is below the entered vehicle height.
Features: Offline maps with free updates, truck-specific routing based on vehicle dimensions and hazmat classification, voice-guided navigation, 14-day free trial of full features.
Pricing: Starting around $14.99/year for basic features. Enterprise pricing available for fleets.
Platforms: iOS and Android.
Best for: Commercial fleets and drivers who need enterprise-grade offline navigation with PC*Miler routing accuracy.
Trucker Path
Trucker Path is a broader trucking platform that includes navigation alongside tools for parking availability, fuel prices, weigh station alerts, and community-driven data. It is trusted by over 1 million drivers.
What sets it apart: The community aspect: real-time parking availability and fuel pricing reported by drivers. Also offers fleet management and ELD integration for commercial operations.
Features: Truck-specific routing that avoids low bridges and weight-restricted roads, real-time parking alerts, fuel price tracking, weigh station status, community reviews.
Pricing: $99.99/year for individual drivers after a 7-day free trial. Fleet pricing starts at $50/month for a manager plus $30/month per driver.
Platforms: iOS and Android.
Best for: Commercial drivers who want an all-in-one trucking platform that goes beyond navigation into parking, fuel, and fleet management.
Hammer GPS
Hammer GPS originated from TruckersReport.com and gained popularity as a free alternative to paid truck GPS apps. It provides basic vehicle-type routing for box trucks, buses, and RVs.
What sets it apart: It was historically the strongest free option for truck and RV navigation. In field tests, it has outperformed some paid apps at detecting low bridges and grade warnings on specific test routes.
Features: Route filtering based on clearance and weight databases, vehicle type selection (box truck, bus, etc.), basic turn-by-turn navigation.
Pricing: Previously free. Recent reports indicate a shift to a paid subscription model around $5/month, though this may vary.
Platforms: iOS and Android.
Best for: Budget-conscious drivers who want basic clearance-aware routing without a large upfront cost.
Sygic Truck & RV Navigation
Sygic is a well-known navigation brand with a dedicated truck and RV variant. It offers offline 3D maps and customized routing based on vehicle dimensions.
What sets it apart: Full offline 3D maps, which is useful for international drivers or those in areas with poor cell coverage. Supports both truck and RV/caravan vehicle profiles.
Features: Customized routes based on vehicle type, size, and weight. Lane guidance, speed limit alerts, traffic data, offline maps.
Pricing: One-time purchase around $139 at full price, though discounts of 20-30% are common. A 7-day Premium trial is available after download.
Platforms: iOS and Android.
Best for: Drivers who prefer a one-time purchase over subscriptions and need reliable offline maps, especially for international routing.
Side-by-Side Comparison
| Feature | HeadRoom | SmartTruckRoute | CoPilot Truck | Trucker Path | Hammer | Sygic |
|---|---|---|---|---|---|---|
| Bridge clearance routing | Yes | Yes | Yes | Yes | Yes | Yes |
| Verified bridge database | 23,000+ | Not disclosed | PC*Miler data | Not disclosed | Not disclosed | Not disclosed |
| Directional hazard data | Yes (exclusive) | No | No | No | No | No |
| Background bridge monitoring | Yes (Sentry Mode) | No | No | No | No | No |
| Voice turn-by-turn | Yes | Yes | Yes | Yes | Yes | Yes |
| Vehicle profiles | Yes | Yes | Yes | Limited | Limited | Yes |
| Offline maps | No | No | Yes | No | No | Yes |
| Web companion | Yes | No | No | No | No | No |
| Free trial | 7 days | No | 14 days | 7 days | Varies | 7 days |
| Monthly price | $4.99 | $15.95 | ~$1.25 | ~$8.33 | ~$5 | One-time ~$139 |
| Coverage | US, CA, UK | US, CA, MX | US, CA | US, CA | US, CA | Global |
Which App Should You Choose?
For most truck drivers and RV owners, the decision comes down to one question: how confident are you that the app actually knows where every low bridge is?
This is where HeadRoom stands apart. It has the largest verified bridge clearance database at 23,000+ structures: more than double most competitors, and unlike government-scraped data, every entry is actively curated and validated. It is the only app with directional Hazard Headings, which means you only get warned about a bridge if it is actually dangerous in your direction of travel. And Sentry Mode gives you background protection even when you are not actively navigating: no other app offers this.
At $4.99/month (or $45/year), it is also the most affordable option on this list. SmartTruckRoute costs $59/year with no free trial. Trucker Path is $99.99/year. Sygic is a $139 one-time purchase. HeadRoom includes a 7-day free trial and a web companion app at no extra cost.
The other apps on this list each have a specific niche: SmartTruckRoute adds IFTA logging for long-haul drivers, CoPilot offers offline maps for areas with no cell coverage, and Trucker Path bundles parking and fuel data. These are useful features: but none of them matter if the app routes you into a bridge. Bridge clearance accuracy is the foundational requirement, and that is where HeadRoom is strongest.
If you drive a truck, RV, or any oversized vehicle and you want the most reliable bridge clearance protection available, start a free trial of HeadRoom and test it on a route you know.
The Bridge Clearance Problem Is Not Going Away
Standard navigation apps are not going to solve this. Google, Apple, and Waze have shown no meaningful movement toward adding bridge clearance data to their routing engines. The problem is niche enough that they have little incentive to address it, but critical enough that it costs the trucking and RV industries millions every year in damage, injuries, and delays.
A $4.99 monthly subscription is a rounding error compared to the cost of a single bridge strike: which can easily run $18,000 or more in vehicle damage alone, not counting cargo loss, fines, and downtime. The math is not complicated.
