Heavy haul and superload operations represent one of the most technically demanding segments in North American trucking. Carriers moving indivisible loads exceeding standard legal weights and dimensions must navigate complex state-specific permitting processes, perform detailed bridge structural analysis, and maintain real-time axle weight telemetry for compliance and safety. Strong Tower Consulting has supported specialized heavy haul fleets for more than 18 years with architecture that integrates route optimization, bridge engineering data, permit automation, and telematics into existing Truckmate, McLeod, or TMW systems.
Our independent consulting model ensures carriers retain full control of their technology stack. Exspeedite is a Strong Tower company and sister company under common ownership. We never require you to purchase proprietary software. Instead, we deliver proven architectural patterns, SQL schemas, integration blueprints, and process frameworks that work with the systems you already own.
The Engineering Challenge of Multi-Axle Hydraulic Platform Trailers
Modern heavy haul configurations frequently utilize 13- to 20-axle hydraulic platform trailers with steerable axles and load-equalizing suspension systems. These trailers distribute concentrated loads across multiple axle groups to meet state bridge formula requirements. Accurate modeling requires precise knowledge of axle spacing, kingpin offset, and dynamic load transfer during turns and elevation changes.
Bridge analysis must account for not only simple span moments but also continuous span effects, fatigue loading, and permit-specific load factors used by various state DOTs. Many carriers still rely on manual calculations or third-party engineering firms for each move. This creates bottlenecks, delays, and inconsistent data between operations, dispatch, and compliance teams.
Automated State DOT Permit Routing and Polygon Clearance
State permitting systems vary widely in data formats, clearance rules, and response times. Our architecture ingests state-provided GIS polygon data for overhead clearance, bridge height restrictions, and weight-limited segments. Using a normalized SQL schema, we maintain a master route network that layers these constraints with real-time construction and event data.
The routing engine evaluates thousands of potential paths against current permit rules, automatically generating applications for states that support electronic filing. For states requiring stamped engineering analysis, the system exports load configuration files directly to bridge analysis packages (such as AASHTOWare Bridge or proprietary state tools) and imports the resulting ratings back into the operational workflow.
| Configuration | Axles | Spread (ft) | Max Legal Weight (lbs) | Typical Permit Weight (lbs) | Primary Bridge Concern |
|---|---|---|---|---|---|
| 13-Axle Platform | 13 | 28.5 | 160,000 | 240,000+ | Interior negative moment |
| 16-Axle Dual Lane | 16 | 32.0 | 200,000 | 320,000+ | Shear at supports |
| 20-Axle SPMT | 20 | 48.0 (modular) | 260,000 | 500,000+ | Multi-span cumulative loading |
Live Axle Weight Sensor Telemetry and Escort Integration
Real-time axle weight data is critical for both permit compliance and bridge protection. Modern hydraulic trailers can be equipped with load cells or air pressure transducers tied to trailer-mounted telematics units. These devices stream weight-per-axle-group data via cellular or satellite links to a central ingestion service.
Our architecture normalizes this telemetry with EDI 214 status messages and driver settlement records. When an axle group approaches or exceeds permitted weights due to load shift or fuel burn-off, the system triggers alerts to both the driver and the carrier's operations center. Escort vehicles equipped with similar telematics units can also report real-time escort positioning relative to the load, creating a complete convoy visibility layer.
Integration with existing TMS platforms (Truckmate, McLeod, TMW) occurs through SQL Server stored procedures and scheduled ETL processes. Load orders containing OSOW details flow from the order entry module into the heavy haul routing and analysis engine. Return data populates custom fields for permit numbers, approved routes, stamped bridge analysis IDs, and real-time compliance status.
Independent by Design
Implementation Roadmap for Heavy Haul Carriers
A successful heavy haul technology transformation typically follows these phases:
- Current state assessment of TMS configuration, SQL schema maturity, and existing telematics integrations
- Design of normalized bridge analysis and permit data repository with linkage to EDI 204/214/210 transaction sets
- Development of routing and clearance engine using state polygon data and CAD ingestion from route surveys
- Real-time telemetry ingestion layer with axle weight validation against permit limits
- Driver settlement and fuel surcharge logic extensions to accommodate escort charges, permitted mileages, and specialized equipment rates
- Testing against historical superload moves and parallel operation with current manual processes
Carriers who complete this transformation typically see permit processing time reduced by more than 60 percent and significantly fewer bridge strike or overweight incidents.
FAQ
How do you integrate superload bridge analysis results with McLeod or Truckmate?
We create a dedicated SQL Server schema that stores stamped engineering reports, load configurations, and bridge ratings. Custom views and stored procedures expose this data to the TMS through ODBC or direct table integration. Permit status and approved route information are written back to standard load and order tables so dispatchers see compliance data in their normal workflow.
What telematics protocols are supported for live axle weight sensors on hydraulic platform trailers?
Our architecture supports industry-standard protocols including MQTT, HTTPS POST, and legacy TCP socket streams from major trailer OEMs and aftermarket providers. Weight data is normalized into a common time-series schema that correlates with GPS location, vehicle speed, and driver HOS status from ELD systems.
Can this architecture work with both private fleet and for-hire heavy haul operations?
Yes. The framework is designed to support both private fleet heavy equipment transport and for-hire specialized carriers. Driver settlement rules, fuel surcharge calculations, and detention logic are parameterized so the same core engine serves both business models without code duplication.
How do you handle varying state DOT permit data formats and update frequency?
We maintain a metadata-driven ingestion service that maps each state's polygon, bridge, and restriction data into a normalized GIS layer. Automated jobs check for updates daily. When a state changes clearance rules or bridge ratings, the system flags affected routes and notifies operations before new permits are requested.
Strong Tower Consulting, LLC was founded in Minnesota in 2008 by Scott Elliott. In business for more than 18 years, we continue to deliver deep domain expertise to the most technically sophisticated motor carriers in North America.
Ready to modernize your heavy haul technology architecture?
Schedule a technical assessment or call 763-244-1373.