AHTD Historic Bridge Web Map
The AHTD Interactive Web Map
allows you to dynamically create simple or intelligent maps. The
Web Map can show the common features (roads, signs, rivers, cities, counties,
and districts) as well as providing information on individual Historic Bridges.
Microsoft Internet Explorer 3.02 or better and 256 colors on the display
monitor. The security on the browser should be changed from high to medium
(View->Internet Options->Security) to automatically receive the ActiveCGM
viewer that is required.
1. The Data Display
allows you to build a map based on Historic Bridges. For
example, you can show all the Historic Bridges that have been deomolished and click on
one to receive a detailed report.
Displays only the district or state map with the
checked items from the Map
- Historic Bridges
Displays the Historic Bridges. Clicking on a bridge will produce a report for that
- Selection of Historic Bridges requires
that you click on one or more of the following options:
- In-Service Bridges
features will be visible (if
checked) at all times on the map.
- State, US, and Interstate centerline of highways.
- State, US, and Interstate edge of highways.
State, US, and Interstate
shields and numbers.
the District Number.
Border - the District Borders and the gray shading.
the County names.
Border - the County borders.
Cities - the larger cities with the city limits.
Cities - the smaller cities.
- Towns -
- Parks -
the state and federal parks.
- Lakes and
Rivers - the larger lakes and rivers.
Forest - the National Forest in green.
- Job Legend
- the job status legend.
3. Use the ActiveCGM controls to navigate inside the
map. In order print the map, you must use the print option from the right mouse
button, not the print in Microsoft Explorer.
(Click the right mouse
button while the pointer is over the
map to see the pop-up menu)
- Refresh - erases and
redisplays any graphics in the viewing area without affecting the size or
- places all of the graphic map in the viewing
Zoom Box -
allows you to select a rectangular area to zoom in
Zoom In -
makes the graphic 100% larger each time
you choose Zoom In.
Zoom Out- makes the graphic 50% smaller each time you choose
opens a window where the
magnified view is 6 times larger. (Like a magnifier
to move the graphic map around the current
- Redline -
allows you to draw on the graphic
- Copy to
copies Entire Window or Region (rectangle area by two points).
Print -prints a full screen copy of the current
contents of the ActiveCGM view.
Save -save contents of the viewing
area (including redlines) as a single CGM.