1. What is the Utah Bridge Law?

The Utah Bridge Law establishes maximum weight limits for vehicles based on axle configuration and spacing to protect bridge infrastructure. It determines the Federal or State Max weight limits for commercial vehicles operating in Utah.

2. How Does the Calculator Work?

The calculator uses the Utah Bridge Law formula:

Where:

• \( W \) — Maximum weight in pounds
• \( L \) — Distance in feet between the first and last axles
• \( N \) — Number of axles

Explanation: The formula accounts for weight distribution across multiple axles to prevent excessive stress on bridges.

3. Importance of Weight Calculation

Details: Proper weight calculation is crucial for bridge safety, compliance with transportation regulations, and avoiding fines for overweight vehicles.

4. Using the Calculator

Tips: Enter the number of axles (minimum 2) and the total spacing between first and last axle in feet. All values must be valid (axles ≥ 2, spacing > 0).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Federal and State Max?
A: Federal Max is the national standard, while State Max may be higher in some states with appropriate infrastructure.

Q2: Are there different rules for different vehicle types?
A: Yes, special rules apply for specialized hauling vehicles, emergency vehicles, and agricultural equipment.

Q3: How is axle spacing measured?
A: Spacing is measured from the center of the first axle to the center of the last axle in the group.

Q4: Are there seasonal weight restrictions?
A: Yes, some roads have seasonal weight restrictions during spring thaw periods.

Q5: What are the penalties for overweight violations?
A: Penalties vary but can include fines, permit requirements, and being required to offload excess weight.