Case Study Nine Mile Widening

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Case StudyNine Mile Widening Relocation of a
Two Lane State Highway

• Troy Dunlap / Jeff Asher
• Tri-State Engineering, Inc.

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The Need for Improvement

• Last section of highway to be upgraded
• Increased traffic flow
• Unable to pass for most of project length
• Potential growth for area

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The Project

• 9 mile widening relocation
• DOT was too busy to do In House
• Selected as Prime Consultant Fall 2000
• Sub Out Span Bridge
• Sub Out Surveying

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Our Charge

• Preliminary Plans
• Public Hearing Displays
• Right of Way Plans
• Design Plans
• All within 2 Years

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Basic Design Criteria

• Use Local Traffic, major connector between two
  cities, high truck volume
• Design Speed 60 mph
• Need to achieve 60 passing sight distance
• Need to achieve safe stopping sight distances
• Follow DOT design standards

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Horizontal Alignment

• Started by tying to previous metric job
• Relocated road 80 feet to East 8 miles
• Widened existing road - 1 mile
• Ended at Tee Intersection

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Vertical Alignment

• Hilly terrain difficult to attain 60 Passing
  Sight Distance
• Had to connect to 12 county roads 3 state
  routes
• Had to connect nearly 100 entrances and maintain
  a reasonable grade

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Other Design Considerations

• Over 90 parcels that required Right of Way
  acquisition
• Drainage 1 span bridge, 3 bridge boxes, and 30
  other culvert crossings
• Traffic to be maintained on existing road through
  duration of construction
• Access to Parcels had to be maintained

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The Fun Really Begins
Or (Our Challenges and Solutions)
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The Big Switch

• The other cadd package
• The client required Microstation and Geopak
• Only one person in house with MS experience
• Geopak? Whats that?
• Purchased Microstation Geopak
• Brought in Geopak Trainer Nov. 2000
• Learning Curve Begins

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Metric?

• File that we had to tie to was given to us in
  metric format
• In Microstation, changed global origin and
  working units
• Then scaled and moved drawing back to Real World
  Coordinates

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Points, Alignments, Runs .. Oh MY!!

• 2 mainline alignments
• 3 state route alignments
• 12 county road alignments
• Hundreds of points
• Wading in Runs up to our knees
• Several Users
• How do you keep track?

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Points, Alignments, Runs . Oh MY!!
Solutions

• Project Manager
• Project Manager
• Project Manager
• Naming of Alignments Runs
• Fill in Description

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Plan Profile Sheets

• Cutting Sheets
• Very Very Busy
• Many Many Edits
• Several Techs

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Plan Profile Sheets Solutions

• Sheet Clip Tool
• Notes Text in Cut Sheets
• Notes Text in Cut Sheets

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Cross Sections

• Over 600 Cross Sections
• Staged Construction
• Over 30 Culvert Sections
• Almost 200 Cross Section Sheets
• Labeling Side Slopes, Cross Slopes, Offsets,
  Elevations

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Cross Sections - Solutions

• Project Manager
• Using Pattern Lines
• Lock Existing Cross Section Elements
• Criteria
• Excavation Limits
• As built TINs
• Subsurface TINs

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Culvert Sections

• Can be cut using Pattern Lines
• Can be created from proposed cross sections
• WARNING The slopes may not be represented
  correctly on a skewed section on a grade.
• Possible Solution would be to use an as built TIN.

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More on Criteria

• Beg, Borrow, Steal Find a criteria that
  someone else has created and modify it!!!!!
• Write your own.
• Also 3 port criteria.
• Ultra Edit

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Kill a TreeHard Copy in a Digital World

• Its 300 p.m., you need to plot hundreds of
  sheets by 400 p.m. for FedUp pickup, what do you
  do?
• We dont know either, but batch plot sure does
  help.

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Ok, its almost noon and your hungry, but what
should you have learned from this session?
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Project Manager

• Project Manager is your Friend
• Store multiple runs and use multiple times by
  multiple users
• Copy Run Set one run, copy it, modify it, use
  it again.
• Easy to switch between jobs lets you see what
  you did last time
• ORGANIZATION

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Plan Profile Sheet Generator

• Pretty quick and almost painless
• Saves time
• Difficult to cut your first and last sheet if you
  want alignment to start in middle of sheet

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Cross Sections

• Easy to create (Pattern Lines are the key)
• Easy to add cross sections (Pattern Lines are the
  key)
• Superelevation shapes
• visually look to see where they are
• Shapes dont have to extend, cross section will
  extend them automatically

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Criteria

• Will save you time
• Beg, borrow, or steal it is readily available
  on the web
• Did we mention, It will save you time

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Earthwork

• Will use whatever is drawn into the cross section
• But you can tell it what to use and what to
  ignore
• Excavation Limits make it easier to do stage
  construction

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Batch Plotting

• Use it
• Saves Hours of Time
• Now you wish you would have went to the batch
  plot seminar.

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Famous Last Words of Wisdom

• Communication
• Organization
• Standardization
• Training