Bridge documentation serves multiple purposes: constraint identification, permit applications, and liability protection.

**Essential Data Points** - Bridge identification number (if posted) - Structure type (beam, truss, suspension, etc.) - Posted weight limit and date of posting - Vertical clearance (underpass and overhead) - Horizontal clearance (deck width, lane restrictions) - Authority (state, county, railroad, private)

**Photo Documentation** - Approach view showing context - Posted signage (legible) - Deck condition - Underside condition (if accessible) - Any visible damage or deterioration

**Notes to Include** - Date and time of survey - Current traffic conditions - Any temporary restrictions observed - Contact information if available

For permit purposes, note whether bridge analysis will be required and whether the bridge authority requires separate notification.