1. Wildlife Overpasses

3. Ungulates Deer sp., Elk, Moose  Mountain goat, Bighorn sheep  Pronghorn  Carnivores Weasel,  Pine marten, Fisher  Striped skunk  Badger, Wolverine  Bobcat, Canada lynx, Cougar  Fox, Coyote, Wolf  Black bear, Grizzly bear 

4. Overpass Design

5. Surrounding Terrain

6. Depth and Substrate for Overpasses

7. Overpass Habitat

8. Plantings

9. Costs Across the four-lane Trans-Canada Highway in Banff National Park (estimated to cost Can$1.75 million each 1995-1997) (The overpasses were 56.8 yd wide x 76.6 yd long) Across a two-lane road, 65.6 yd–wide, the Trans-Canada Highway in the Lake Louise area was estimated at Can$3.5 million to $4 million(2007) including traffic control and detour Across a two-lane road, Montana Highway 83, estimated to cost $1.5 million to $2.4 million in 2006 Across four-lane roads, 32.8–54.6 yd wide, in The Netherlands, ranged between €3,500,000 and €14,750,000 [costs in 2004-2006 Euros) [

10. Maintenance