ADA Ramp Design

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ADA Ramp Design Construction Issues

• 2006
• Highways and Engineering Conference

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Objectives

• Share Recent Experiences In
• Contract Administration
• Design Changes After Award
• Contractor Concerns Claims
• Ramp Designs
• Retro-Fit Challenges
• Topography Surveys

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Project

• CM 0204(4) 4th-Hickory to R/R Xing- Anaconda
• Cold Milling, PMS Overlay, Seal Cover,
  Sidewalk, and Curb Gutter

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ADA Ramp Detail4th- Hickory- Anaconda
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ADA Ramp Detail4th- Hickory- Anaconda
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Contractor Claim

• Contractor Submits Claim Resulting From MDT
  Design Changes
• Claims MDT Changed Sequence of Operations
  Requiring Extra Work
• One Size Fits All Mentality
• Outcome-
• MDT Settled The Claim at The District Level
• Agreed to Additional Costs Per Radius
• Additional Contract Time

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Contractor Claim

• Contributing Factors-
• Subcontractor New to Business
• Unfamiliar With ADA Retro-Fit Type Work
• Ramp Design Changes
• Post Award
• Scenario Could Effect Apparent Low Bid
• Topography Survey Plan Details

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Recommendations

• Carefully Consider Design Changes After Award
• Negotiating Terms, Lack of Competition
• Claims
• Preliminary Survey Considerations
• Topography
• Drainage, Curb Configuration
• Whenever Practical Designer Visits Project

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Recommendations

• Design Details
• All or None
• Develop Design Specialists (e.g. Geometrics)
• Communication
• Prelim. Survey Request Requires Photo Log
• Coordination
• Increase Plan Checkers Awareness to Help Identify
  Potential Concerns

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Example Detail-Geyser to Park-Livingston
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Example Detail-Geyser to Park-Livingston
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Geyser to Park-Livingston
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Thats It!
Thank You!