Alignment - Create Alignments From Intersection Block

Last updated: 2021-11-09

Overview

This command creates miscellaneous alignment objects from the WisDOT intersection blocks (based on SDD 9A1 At-Grade Side Road Intersections). Alignment names, layers, and styles are all preset to standard values.

Info: This tool works with blocks published in November 2021 and newer. Older blocks will not work with this tool.

Usage

WisDOT Design tab > Design panel > Alignment menu > Create Alignments From BG Block

The tool can also be accessed from the command line: DOTCREATEALIGNMENTSFROMBGBLOCK.

  1. Select WisDOT Intersection Block: (Select an intersection block in model space.)
  2. Select mainline Alignment: (Select an alignment in model space.)

  3. Select sideroad Alignment: (Select an alignment in model space.)

Details

  1. A folder is created in Toolspace > Prospector > Alignments > Miscellaneous Alignments with the naming format Int-<mainline alignment>-<sideroad alignment>-<Entry/Exit>
  2. A miscellaneous alignment is created for each of the following features:
    1. Curb and gutter (flange of curb radius)
      1. The curb radius does not have Entry/Exit applied to it.
      2. Face and back offset alignments can be created with Alignment - Create Curb Offsets
    2. The following features have Entry/Exit applied to them. This is relative to the curb radius based on a right hand turn. It does NOT apply to either the mainline or sideroad alignments.
      1. Edge of pavement
      2. Edge of paved shoulder
      3. Edge of gravel shoulder
    3. Island (for type A1, angle <= 80)
  3. Alignments created have the naming format Int-<mainline alignment>-<sideroad alignment>-<quadrant>-<feature>
    1. Quadrants assigned are either N,S,E,W or NW,SW,NE,SE depending on the angle of the intersection.
  4. Alignments can be created from one block (half intersection) or two blocks (full intersection). Alignments from two blocks will be placed in the same intersection folder.
  5. Sideroad taper alignments will need to be edited to match project conditions.

  6. The tool can be rerun on intersection blocks. If the tool is run on a block that already has alignments created from it, the existing alignments will be geometrically edited to match the current geometry of the block. To use this functionality, the following workflow would apply:

  7. Tip:

    The tool can be rerun on intersection blocks. If the tool is run on a block that already has alignments created from it, the existing alignments will be geometrically edited to match the current geometry of the block. To use this functionality, the following workflow would apply:

    1. Place intersection blocks on custom layer.
    2. Create miscellaneous alignments from blocks.
    3. Edit necessary geometry for project conditions.
    4. Freeze intersection block layer.
    5. When edits are required,
      1. thaw intersection block layer
      2. Edit intersection blocks (change curb return radius for instance)
      3. Rerun tool

      4. Edit geometry for project conditions

    This workflow will make geometry edits possible without creating newly named objects and leave any data references or corridor targeting intact.