Information on Bridges is available when selecting "Bridges" under the "Thematic" heading in the top Menu bar.

Bridges: An explanation of the Control Panel terminology and an example search is shown below the following images:

1. Video Cam Icon: Click this Icon next to the Bridges heading to view a short video describing available features in the Bridges queries.
2. Output LRM: Select the desired LRM to display from the picklist:
3. Selected Route: All state routes and major county routes (functionally classed minor collector and above) are listed in the drop down box, and any single route may be selected for the map/report. If a particular route is selected, a box will appear for the input of the beginning (BMP) and ending milepoints (EMP) for the map/report.
4. Spatial Filter: This filter defines a particular area for building the map/report. Current View will make the map/report using whichever map may be currently visible at the right of the Control Panel; additional filters include maps of Island, Census Tracts, political House & Senate districts (state), and a Custom filter, enabling the drawing of a circle or polygon around a desired area for the map/report. Selection of the Spatial Filter option will produce an Area drop-down box which contains available Island names, district numbers, etc. depending upon the filter that was selected.

Using the Custom Filter: to map features within a selected circular or polygon area in the map, select "Custom Filter", click the radio button for Circle or Polygon, and then click the "Draw Filter" button. A dialog box instructs to draw a circle\polygon and then make a map. Click "ok" and the cursor will appear as a "+".

-To draw a circle, click once on the map where the center of the circle will be and release the mouse button; then move the mouse to move the cursor away from that point to the desired radius of the circle and click again; the cursor will then be free to select Make Map, etc.
-To draw a polygon, click once on the map, release the mouse button, and move the mouse to draw the first leg of the polygon; click once, then draw the next leg; repeat drawing as many legs as desired, then double click to finish the polygon and free the cursor to select Make Map, etc.



5. Make Map:

   To make a map of the Bridges on a selected route, select a route from the "Selected Route" drop down and then enter the criteria in the Attribute fields which will then appear as shown in the following view; Click Make Map and the resulting map is shown on the right. Moving the cursor over the map features provides a tool tip with information on the Bridge. The Legend can be minimized by clicking the "Click to Hide" line at the bottom of the Legend.

   Note that if the results are to be saved as a DGN,Shape or KML file, the check box at the bottom of the Control Panel labeled "Save Results As" must be checked before making a map.




Once the map is presented, information may be viewed in the tool tips when the mouse is moved over the Bridge Symbol as shown on the map above right.

6. Backdrop: Before making a map, selecting Raster will display a low-resolution satellite image under the resulting map. Selecting Vector returns the map to the normal view.
7. Save Results As: Before making a map, checking this box will provide a zipped file for download that contains Shape (shp) files, Design (DGN) files or Google Earth (KML) files.