SR 50 Connectivity

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Project Date:

Monday, March 9, 2015

Project Status:

State Route 50 is a major east-west transportation corridor across the Sierra Nevada. This project examines successful animal movement through structures under SR50 that were intentionally built for wildlife, or that were built for some other reason (e.g., a river crossing).

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Videos

SR 50 Connectivity: Time-lapse video of images

Three months of still photos at wildlife crossing structure under California highway 50. This structure was built by Caltrans, District 3, to allow wildlife to safely pass under the highway. Thousands of animals have passed through the structure, reducing conflict with vehicles on the highway above.

Project Map

Observation Summary

This is a summary of animal observation across all locations and positions.

	Animal	Animal Write-in	Image Count	Animal Count
1	Cedar Waxwing		1	1
2	Mountain Quail		1	1
3	Purple Finch		1	1
4	American Robin		1	1
5	Ringtail		1	1
6	Northern Rough-Winged Swallow		1	1
7	Red-Shouldered Hawk		1	1
8	Black-Headed Grosbeak		1	1
9	Western Scrub-Jay		1	1
10	Brown-Headed Cowbird		1	1
11	Mule (or Black tailed) Deer	See far end of underpass (changes in shadows)	2	3
12	Golden-Crowned Sparrow		2	2
13	Cooper's Hawk		3	3
14	Black Rat		3	3
15	Lesser Goldfinch		3	4
16	Pine Siskin		3	3
17	Black Phoebe		3	3
18	Eastern Gray Squirrel		4	4
19	California Pocket Mouse		4	4
20	California Quail		4	5
21	Brewer's Blackbird		6	6
22	Human Researcher		8	8
23	Bobcat		10	10
24	Brush Rabbit		11	11
25	Striped Skunk		14	14
26	Domestic Dog		15	15
27	California Ground Squirrel		18	18
28	Band-Tailed Pigeon		18	36
29	Western Gray Squirrel		27	27
30	Raccoon		40	40
31	Black Bear		44	44
32	House Finch		47	83
33	Human		78	90
34	Steller's Jay		81	84
35	Gray Fox		234	237
36	Mourning Dove		569	1,160
37	Mule (or Black tailed) Deer		3,175	4,598