RTA Proposal for Phase I Tangerine
Road Wildlife Crossing Structures
May 8, 2015
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Project Scope
 Widen Tangerine Road from two to four lanes.
 Create all-weather crossings over washes to
avoid road flooding and closures.
 Plan for future traffic increases.
 Add wildlife crossing structures and funnel
fences based on the AZGFD
Wildlife Linkages Study (2011).
 Use native plants and water
harvesting for landscaping.
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
The Importance of Maintaining Wildlife
Connectivity on Tangerine Road:
 Tangerine Rd. bisects the Tortolita Fan, which is
rich wildlife habitat.
 This project is included in the RTA Wildlife
Linkages “Wildlife Priority Corridors List.”
 AZGFD 2011 Report weekly road
surveys yielded 5,152 road-kill
detections in just a 5 month
period in 2010.
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Wildlife Crossing Design
– Town of Marana, AZ Game & Fish Dept. and Pima
County designed special inlet ramps and outlet
structures to maintain suitability for wildlife.
– Drainage constraints required bottoms in the
medium-sized mammal structures, but baffles will be
added to catch sediment and
create a more natural-feeling floor.
– Small and medium-sized mammal
fencing will deter wildlife from
crossing over the roadway.
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Wildlife-friendly Inlet Structure
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Special outlet structures designed to function
hydrologically with little scour and provide wildlife
“sidewalks” along the edges.
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Baffles (4” high) will be added every 10 ft inside
culvert floor to catch sediment and create
natural-feeling substrate for wildlife.
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Dimensions of Proposed Wildlife Crossing Structures for
Tangerine Road Project Phase I
Station
Wildlife
Dimensions for Wildlife
Size
735+63.11
Med.
772+32.00
Med.
828+05.50
Med.
855+03.06
885+40.00
One cell: 20’ x 6’ x 152’
Three cells: 24’ x 7’ x 138’
Two cells: 20’ x 6’ x 122’
Ht.
Length
Calculated
O.I. 1
6 ft.
152 ft.
0.12
7 ft.
138 ft.
0.37
6 ft.
122 ft.
0.15
Med.
Three cells: 1 cell – 36’ x 9’
9 ft.
and
2 cells -32’ x 8’ x 179.6'
8 ft.
179.6 ft. 0.60
Med.
Three cells – 20’ x 6’ x
156.7’
156 ft.
6 ft.
0.13
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Locations of Wildlife Crossings in Phase I
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Cost estimate for additional expenses for wildlife structures,
above drainage deeds
Extra Design/
Materials Cost
Medium Wildlife Crossing Structure @ Sta. 735+63.11 (One
cell: 20' x 6' x 152' long) Reinforced Concrete Box Culvert
$146,604.00
Medium Wildlife Crossing Structure @ Sta. 772+32.00 (Three
cells: 24' x 7' x 138') Reinforced Concrete Arch Culvert
$543,098.00
Medium Wildlife Crossing Structure @ Sta. 828+05.50 (Two
cells: 20' x 6' x 122') Reinforced Concrete Box Culvert
$164,729.00
Medium Wildlife Crossing Structure @ Sta. 855+03.06 (Three
cells: 1 cell -36' x 9' and 2 cells -32' x 8'x 179.6' ) Reinforced
Concrete Arch Culvert
$597,330.00
Medium Wildlife Crossing Structure @ Sta. 885+40.00 (Three
cells: 20' x 6' x 156.7') Reinforced Concrete Box Culvert
$260,741.00
Wildlife Fencing
$833,332.00
Post-Construction Monitoring
Total
$50,197.00
$2,596,031.00
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Total In-Kind Contributions
Town of Marana staff time (Contracts,
meetings, document reviews, etc.)
$18,774.00
AZGFD staff time (Meetings and
correspondence)
Town of Oro Valley cost (Contracts, meetings,
document reviews etc.)
$5,000.00
Pima County staff time (Contracts, meetings,
document reviews etc.)
$12,200.00
Total In-Kind
$9,000.00
$45,474.00
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Timeline:
Phase
Schedule
Design of Roadway Plans
Completed
November 2015
Anticipated Phase I
Construction Start Date
Early 2016
Anticipated Phase I
Construction Duration
18-24 Months
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
PRINCIPAL INVESTIGATORS/ORGANIZATIONAL EXPERIENCE
Evaluation:
 Shawn Lowery, Scott Blackman, Ray Schweinsburg, and David
Grandmaison, Arizona Game and Fish Department
Project Design:
 Phil Salaza, Sean Samsel and Alejandro Angel, PSOMAS
 Jim Schoen, Kittelson Engineering
 Keith Brann, Town of Marana
 Jose Rodriguez and Phil Trenary, Town of Oro Valley
 Rick Ellis, Pima County
Tangerine Rd. Phase I RTA
Wildlife Linkages Proposal
Project Management:
 Phil Trenary, Town of Oro Valley
 Rick Ellis, Pima County
 Jennifer Christelman, Tom Houle and Janine Spencer, Town of
Marana
Technical Advisory Committee
 Lisa Shafer and Scott Leska, Town of Marana
 Mike Ingraldi, Arizona Game and Fish Department
 Bill Zimmerman, Pima County Regional Flood Control District
 Jim DeGrood, Pima Regional Transportation Authority
 Kim Otero, Westland Resources
 Brent Bartz, PSOMAS Engineering
 Scott Leska, Town of Marana
 Jerry Curless, CMG Drainage