Hy-Span | Advantages

• Full Roadway width across structure
• Unhindered snow removal
• Less exposure to catastrophic failure
• Ease of roadway widening by extending culvert
• Simplifies preparation of plans
• Lower initial cost for most site conditions
• Minimal bridge maintenance

Advantages of Precast vs. Cast-in-Place Concrete

• Economy
• Speed of installation - minimizes road closing time
• Installation with less dependence on weather conditions

Advantages of Concrete vs. Metal

• Longer life
• Less maintenance
• Smooth hydraulic surface
• Less restrictive cover limitations
• Normal backfill procedures allowable
• More easily customized for special conditions

Advantages of Rigid Frame Design vs. Arch Design

• Normal backfill procedures - no additional lateral resistant required
• Span, rise and laying length can be varied EXAMPLE
• Skewed structure to 45 degrees DIAGRAM
• No cover required - pave directly on top of deck
• Vertical sidewall allow simple wingwall connection
• Vertical sidewalls allow hydraulically efficient entrance condition