Types of Bridge Authority

*State/Provincial DOT* - Most common authority - Standard permit process typically covers - Analysis required for heavy loads

*Railroad* - Separate authority from highway - May require notification or permit - Crossing timing may be restricted

*Toll Authorities* - May have different weight policies - Separate permit or fee structure - May require escorts

*Local/Municipal* - Often on secondary routes - May have lower standards or limits - Coordination through local permit process

**When Analysis is Required** - Loads exceeding legal limits significantly - Unusual axle configurations - Loads approaching posted limits - Bridges in poor condition

**Analysis Process** - Submit load configuration to authority - Authority evaluates bridge capacity - May require licensed engineer analysis - Results in approval, denial, or conditions

**Crossing Procedures** - Speed restrictions on bridge - Lane positioning requirements - No stopping on bridge - May require traffic control