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Road ecology blog: Pathway for large mammals in an underpass designed for water

January 21, 2019 - Road ecology blog: Pathway for large mammals in an underpass (bridge) primarily designed for water (stream), US Hwy 93 S...
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Road ecology blog: Wildlife fence for black bear reduces height at a wildlife underpass

January 07, 2019 - Road ecology blog: Wildlife fence for black bear (Ursus americanus), 3 m high (10 ft), reduces height to 8 ft where the...
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Road ecology blog: Multifunctional underpass at the end of a fence for black bear

January 05, 2019 - Road ecology blog: Multifunctional underpass (agriculture, farm equipment, wildlife) at the end of a fence for black bea...
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Road ecology blog: Wildlife underpass and fence for black bear, North Carolina, USA

January 04, 2019 - Road ecology blog: Wildlife underpass and fence for black bear (Ursus americanus), 3 m high (10 ft), US Hwy 64, near Rop...
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Road ecology blog: Wildlife underpass and stream, SP 225, near Brotas, Brazil

December 26, 2018 - Road ecology blog: Wildlife underpass and stream, SP 225, near Brotas, Brazil. Note the abundance of tracks in the mud o...
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Road ecology blog: Wildlife guard at access road for Key deer, Florida

December 22, 2018 - Road ecology blog: Wildlife guard for Key deer at access road along US Hwy 1, Big Pine Key, Florida, USA Click here f...
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Road ecology blog: Wildlife guard at fence end on US Hwy 1, Big Pine Key, Florida, USA

December 21, 2018 - Road ecology blog: Wildlife guard at fence end on US Hwy 1, Big Pine Key, Florida, USA Click here for images of mitig...
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Road ecology blog: Wildlife warning signs, Key deer, US Hwy 1, Big Pine Key, Florida, USA

December 20, 2018 - Road ecology blog: Wildlife warning sign, drive with caution, you are entering an endangered species area, US Hwy 1, Big...
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Road ecology blog: It is unlawful to feed the Key deer, Florida

December 19, 2018 - Road ecology blog: Wildlife warning sign for Key deer, It is unlawful to feed the Key deer, No Name Key, Florida, USA...
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Road ecology blog: Wildlife warning sign with spelling error, Florida, USA

December 18, 2018 - Road ecology blog: Wildlife warning sign with spelling error made by concerned citizen, slow down for deers, Big Pine Ke...
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Road ecology blog: Variable message sign for Key deer, Florida, USA

December 17, 2018 - Road ecology blog: Variable message sign, Caution, slow down, Key deer crossing ahead, US Hwy 1, Big Pine Key, Florida,...
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Road ecology blog: Speed bumps to reduce traffic speed for Key deer

December 16, 2018 - Road ecology blog: Speed bump painted like a crosswalk to reduce traffic speed for Key deer, Big Pine Key, Florida, USA...
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Road ecology blog: Wildlife underpass for Key deer, Florida, USA

December 15, 2018 - Road ecology blog: Wildlife underpass for Key deer (8 m wide, 3 m high), US Hwy 1, Big Pine Key, Florida, USA Click...
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Road ecology blog: Speed management for Key deer, radar on trailer, Florida, USA

December 14, 2018 - Road ecology blog: Speed management for Key deer, radar on trailer (during day 45 MPH, during night 35 MPH), US Hwy 1, B...
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Road ecology blog: Speed management for Key deer, parked police car, Big Pine Key, Florida

December 13, 2018 - Road ecology blog: Speed management for Key deer, parked police car, no law enforcement officer present (during day 45 M...
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Road ecology blog: Wildlife fence and barrier wall associated with wildlife underpass

December 12, 2018 - Road ecology blog: Wildlife fence and barrier wall associated with wildlife underpass for Key deer (8 m wide, 3 m high),...
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Road ecology blog: Amphibian tunnels with open slotted roofs and barrier wall

December 09, 2018 - Road ecology blog: Images below: Amphibian tunnel with open slotted roof (ACO) and barrier or wall for amphibians, inte...
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Road ecology blog: Amphibian tunnel and barrier wall for amphibians

December 08, 2018 - Road ecology blog: Amphibian tunnel with open slotted roof and barrier wall for amphibians (integrated into roadbed), De...
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Road ecology blog: Bridge, north of Kaycee, Wyoming

July 08, 2017 - Road ecology blog: Bridge, north of Kaycee, Wyoming. Based on tracks and hair, some of these underpasses may be used by...
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Road ecology blog: Cattle guard, Wyoming

July 07, 2017 - Road ecology blog: Cattle guard, north of Kaycee, Wyoming Click here for other images of wildlife guards, cattle gu...
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Road ecology blog: Culverts for livestock, North of Kaycee, Wyoming

June 30, 2017 - Road ecology blog: Culverts for livestock, North of Kaycee, Wyoming. Click here for images of wildlife fencing. Clic...
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Road ecology blog: Bridges across streams, north of Kaycee, Wyoming

June 28, 2017 - Road ecology blog: Bridges across streams, north of Kaycee, Wyoming Click here for images of wildlife fencing. Click...
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Road ecology blog: Underpasses for farm vehicles and livestock, Wyoming

June 27, 2017 - Road ecology blog: Underpasses for farm vehicles and livestock, along I-25, North of Kaycee, Wyoming. Note: some of thes...
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Road ecology blog: The Stuffed Teddy Bear Phenomenon

May 31, 2017 - Road ecology blog: Multi-functional underpass (water, wildlife) and short section of wildlife fencing, US Hwy 89, near D...
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Road ecology blog: A kilometer post, Nuevo Xcan-Playa Del Carmen highway, Mexico

January 13, 2017 - Road ecology blog: A kilometer post, Nuevo Xcan-Playa Del Carmen highway, Quintana Roo, Mexico Click here for more im...
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Road ecology blog: Canopy crossings for arboreal mammals, Mexico

January 11, 2017 - Road ecology blog: Canopy crossings for arboreal mammals, Nuevo Xcan-Playa Del Carmen highway, Quintana Roo, Mexico. The...
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Road ecology blog: Wildlife fence along Nuevo Xcan-Playa Del Carmen highway, Mexico

January 10, 2017 - Road ecology blog: Wildlife fence along Nuevo Xcan-Playa Del Carmen highway, Quintana Roo, Mexico. The previous road ec...
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Road ecology blog: Wildlife underpasses, Nuevo Xcan-Playa Del Carmen highway, Mexico

January 09, 2017 - Road ecology blog: Wildlife underpasses, Nuevo Xcan-Playa Del Carmen highway, Quintana Roo, Mexico This relatively new...
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Researchers at work: Marcel Huijser checks out wildlife underpass, Mexico

January 06, 2017 - Researchers at work: Marcel Huijser checks out a wildlife underpass, Nuevo Xcan-Playa Del Carmen highway, Quintana Roo,...
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Road ecology blog: Mitigation measures for long-toed salamander, Waterton, Alberta, Canada

November 21, 2016 - Road ecology blog: Mitigation measures for long-toed salamander (Ambystoma macrodactylum), Waterton Lakes National Park,...
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Road ecology blog: Wildlife underpasses, fences and jump-outs, US Hwy 95, Idaho, USA

November 18, 2016 - Road ecology blog: Wildlife underpasses, fences and jump-outs, US Hwy 95, Bonners Ferry, Idaho, USA Image below: Fernan...
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Road ecology blog: Yellow cururu toads (Rhinella icterica) on bridge, 'Carlos Botelho', Brazil

January 10, 2016 - Road ecology blog: Yellow cururu toads (Rhinella icterica) on bridge across stream, Parque Estadual 'Carlos Botelho', Sã...
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Road ecology blog: Standing water on bridge with plugged drains, Brazil.

January 08, 2016 - Road ecology blog: Standing water on bridge with plugged drains, Parque Estadual 'Carlos Botelho', São Paulo, Brazil. Th...
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Brazilian landscapes: Stream through Atlantic forest, Parque Estadual 'Carlos Botelho'

January 06, 2016 - Brazilian landscapes: Stream through Atlantic forest, Parque Estadual 'Carlos Botelho', São Paulo, Brazil. Click here f...
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Road ecology blog: Bridges across streams, Parque Estadual 'Carlos Botelho', Brazil

December 30, 2015 - Road ecology blog: Bridges across streams, Parque Estadual 'Carlos Botelho', São Paulo, Brazil. Many of these bridges ar...
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Road ecology blog: Elevated roadway, US Hwy 90, near Franklin, Louisiana, USA

October 05, 2015 - Road ecology blog: Elevated roadway, US Hwy 90, near Franklin, Louisiana, USA. Click here for more images of long bridg...
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Road ecology blog: Run-off is directly deposited in stream, Brazil

August 06, 2015 - Multi-functional culvert, SP-270 about 70 km south east of Presidente Prudente, São Paulo, Brazil. Note that the run-off...
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Road ecology blog: Culverts for hydrology and making co-use by wildlife possible

July 24, 2015 - Image below: Set of culverts for hydrology that are inside the fenced road corridor, SP-225, near Brotas, São Paulo. The...
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Road ecology blog: Freshly cut eucalyptus plantation next to a wildlife underpass, Brazil

July 17, 2015 - Road ecology blog: Freshly cut eucalyptus plantation next to a wildlife underpass, SP-225, near Brotas, São Paulo, Brazi...
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Road ecology blog: Wildlife fence, near Freeport, Florida, USA

May 25, 2015 - Road ecology blog: Wildlife fence (smaller mesh size towards bottom), Hwy 331, Hwy 83 near Freeport, Florida, USA Click...
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Road ecology blog: Construction for highway widening (4 lanes to 2 lanes), Florida, USA

May 24, 2015 - Road ecology blog: Construction for highway widening (4 lanes to 2 lanes), Hwy 331, Hwy 83 near Freeport, Florida, USA....
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Road ecology blog: Hydro-seeding to reduce erosion, Florida, USA

May 20, 2015 - Road ecology blog: Hydro-seeding to reduce erosion associated with highway widening, Hwy 331, Hwy 83 near Freeport, Flor...
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Road ecology blog: Easy access and maintenance of wildlife fence, Florida, USA

May 19, 2015 - Road ecology blog: Gap between right-of-way fence and wildlife fence to allow for easy access and maintenance in right-o...
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Road ecology blog: Riprap at wildlife fence to reduce erosion, Florida, USA

May 18, 2015 - Road ecology blog: Riprap at wildlife fence to reduce erosion at wildlife underpass, Hwy 331, Hwy 83 near Freeport, Flor...
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Road ecology blog: Sign, posted, no trespassing, at wildlife underpass, Florida, USA

May 18, 2015 - Road ecology blog: Sign, posted, no trespassing, at entrance and exit of wildlife underpass, Hwy 331, Hwy 83 near Freepo...
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Road ecology blog: Wildlife fence and underpass, Hwy 331, Hwy 83 near Freeport, Florida, USA

May 14, 2015 - Wildlife fence (smaller mesh size towards bottom) funnels wildlife towards wildlife underpass, Hwy 331, Hwy 83 near Free...
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Road ecology blog: Wildlife fence, Hwy 331, Hwy 83 near Freeport, Florida, USA

May 13, 2015 - Road ecology blog: Wildlife fence (smaller mesh size towards bottom), Hwy 331, Hwy 83 near Freeport, Florida, USA Click...
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Road ecology blog: Wildlife fence funnels wildlife towards wildlife underpass, Florida

May 12, 2015 - Road ecology blog: Wildlife fence (smaller mesh size towards bottom) funnels wildlife towards wildlife underpass, Hwy 33...
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Road ecology blog: Erosion control at stream for highway widening project, Florida, USA

May 11, 2015 - Road ecology blog: Erosion control at stream at construction of new bridge in association with highway widening (4 lanes...
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Road ecology blog: Construction for highway widening, near Freeport, Florida, USA

May 11, 2015 - Road ecology blog: Construction for highway widening (4 lanes to 2 lanes), Hwy 331, Hwy 83 near Freeport, Florida, USA....
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Road ecology blog: Drainage culvert with riprap to reduce erosion, Florida, USA

May 09, 2015 - Road ecology blog: Drainage culvert with riprap to reduce erosion, Hwy 331, Hwy 83 near Freeport, Florida, USA. Click h...
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Road ecology blog: Multifunctional underpass (for water and wildlife), Florida, USA

May 08, 2015 - Road ecology blog: Multifunctional underpass (for water and wildlife), Hwy 331/83 near Freeport, Florida, USA. Note the...
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Road ecology blog: historic images of underpasses for Florida panther, Florida, USA

April 08, 2015 - Road ecology blog: historic images of underpasses and tall wildlife fencing for the Florida panther, Florida, USA. I re-...
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Road ecology blog: Andreas Kindel looks for animal tracks at wildlife underpass, Brazil

April 01, 2015 - Road ecology blog: Andreas Kindel looks for animal tracks at wildlife underpass, RS-486, Reserva Biológica Mata Paludosa...
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Road ecology blog: Hole in wildlife fence in median near underpass, São Paulo, Brazil

January 16, 2015 - Road ecology blog: Hole in wildlife fence in median near underpass, SP-225 near Brotas, São Paulo, Brazil. This is in t...
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Road ecology blog: create a gradual approach for wildlife to underpasses

January 15, 2015 - It is best to construct wildlife crossing structures in such a way that it allows wildlife that approaches the road to s...
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Road ecology blog: Drainage from road under wildlife fence at underpass, São Paulo, Brazil

January 06, 2015 - Drainage from road under wildlife fence at underpass, SP-270 about 70 km south east of Presidente Prudente, São Paulo, B...
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Road ecology blog: Multi-functional underpasses (water, wildlife), São Paulo, Brazil

January 04, 2015 - Road ecology blog: Multi-functional underpasses (water, wildlife), SP-270 about 70 km south east of Presidente Prudente,...
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Road ecology blog: Viaduct, East of Itatinga, BR-374, São Paulo, Brazil

December 01, 2014 - Road ecology blog: Viaduct, East of Itatinga, BR-374, São Paulo, Brazil. Long bridges or viaducts that are higher than...
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Researchers at work: Osnir Ormon Giacon at a multi-functional underpass

November 22, 2014 - Image below: Researchers at work. Osnir Ormon Giacon (CART - Concessionária Auto Raposo Tavares) explains the design con...
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Audio slide show about mitigation measures along highways

October 22, 2014 - This just came out. An audio slide show in Orion Magazine about mitigation measures for wildlife along highways: http...
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Road ecology blog: Multifunctional underpass, Rio Jacaré-Pepira, SP-225 motorway, Brazil

September 22, 2014 - Road ecology blog: Multifunctional underpass along Rio Jacaré-Pepira, SP-225 motorway, Brotas, Brazil. Note that it wou...
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Brazilian wildlife: tracks

September 20, 2014 - Brazilian wildlife: tracks Click here for more images of wildlife tracks, scat and hair. Some large format prints (lim...
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Road ecology blog: Multifunctional underpasses, SP-225 motorway, Brotas, Brazil

September 19, 2014 - Road ecology blog: Multifunctional underpasses, SP-225 motorway, Brotas, Brazil. Most of the underpasses under the SP-2...
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Road ecology blog: Fence and multifunctional underpass, near Brotas, Brazil

September 17, 2014 - Road ecology blog: Fence and multifunctional underpass along SP-225 tollroad, near Brotas, Brazil Click here for more i...
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Road ecology blog: Multifunctional underpass for a stream and wildlife, Montana, USA

June 17, 2014 - Road ecology blog: Multifunctional underpass for a stream and wildlife, US Hwy 93 South, Bass Creek north, south of Flor...
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Road ecology blog: water eroding away wildlife path at multifunctional underpass, Montana

June 13, 2014 - Road ecology blog: water eroding away wildlife path at multifunctional underpass, Montana, USA. This is a multifunction...
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Road ecology blog: Multifunctional underpass, US Hwy 93 South, near Corvallis, Montana, USA

June 12, 2014 - Multifunctional underpass (water, wildlife), US Hwy 93 South, near Corvallis, Montana, USA. At the peak of the run-off t...
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Road ecology blog: Boulders to reduce water velocity, California, USA

May 30, 2014 - Road ecology blog: Boulders to reduce velocity of water running down slope, near Sonora, California, USA. This is at an...
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Road ecology blog: Gopher snake (Pituophis catenifer) roadkill, California, USA

May 23, 2014 - Road ecology blog: Gopher snake (Pituophis catenifer) roadkill, Hwy 49 south of Chinese Camp, California, USA. Click he...
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Road ecology blog: Sepp Jannotta interviews Whisper Means, Flathead Indian Reservation

May 22, 2014 - Road ecology blog: Sepp Jannotta (Montana State University News Service) interviews Whisper Camel-Means (CSKT), US Hwy 9...
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Road ecology blog: Multifunctional underpass, near Sonora, California, USA

May 22, 2014 - Road ecology blog: Multifunctional underpass (road and wildlife), near Sonora, California, USA. Click here for images o...
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Road Ecology blog: Visual barrier above wildlife underpass, Hoog Soeren, The Netherlands

February 09, 2014 - Road Ecology blog: Visual barrier above wildlife underpass, near "Aardhuis" along N344, Amersfoortseweg, Hoog Soeren, Th...
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Road Ecology blog: Box culvert for turtles, Hwy 69, Ontario, Canada

February 02, 2014 - Road Ecology blog: Box culvert for turtles, Hwy 69, Ontario, Canada. Turtle underpass, Hwy 69, Ontario, Canada. The tur...
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Road ecology blog: Multifunctional underpass, A4 motorway, Parndorf, Austria

February 01, 2014 - Road ecology blog: Multifunctional underpass (about 45 m wide), under A4 motorway, Parndorf, Austria. Click here for im...
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Road ecology blog: Wildlife fence connects tightly to underpass, Parndorf, Austria

January 31, 2014 - Road Ecology blog: Wildlife fence connects tightly to multifunctional underpass (wildlife and farm road, about 36 m wide...
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Road Ecology blog: Low volume road at multifunctional underpass, Parndorf, Austria

January 30, 2014 - Road Ecology blog: Low volume road at multifunctional underpass (wildlife and farm road, about 36 m wide), under A4 moto...
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Road ecology blog: Wildlife fence, A4 motorway, Parndorf, Austria

January 15, 2014 - Road ecology blog: Wildlife fence and gate at multifunctional underpass, under A4 motorway, Parndorf, Austria. Click he...
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Road ecology blog: Wildlife fence and gate, near Parndorf, Austria

December 23, 2013 - Road ecology blog: Wildlife fence and gate at multifunctional underpass, under A4 motorway, Parndorf, Austria. To open...
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Road ecology blog: Light in underpass for roads without median, Austria

December 19, 2013 - Road ecology blog: Grate in the median (lets some light and water into underpass) at multifunctional underpass under A4...
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Road ecology blog: Multifunctional underpass, under A4 motorway, Parndorf, Austria

December 18, 2013 - Road ecology blog: Multifunctional underpass (farm road and wildlife), under A4 motorway, Parndorf, Austria. Click here...
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Road ecology blog: Dead mule deer, stuck between fence and wing wall underpass

December 12, 2013 - Mule deer (Odocoileus hemionus) got stuck between wildlife fence and the wing wall associated with a wildlife underpass...
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Road ecology blog: Drainage system at multifunctional underpass, Parndorf, Austria

December 11, 2013 - Road ecology blog: Drainage system for run-off at multifunctional underpass, under A4 motorway, Parndorf, Austria. Run-...
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Road ecology blog: Wildlife fence and gate, Parndorf, Austria

December 09, 2013 - Road ecology blog: Wildlife fence and gate at multifunctional underpass, under A4 motorway, Parndorf, Austria Click her...
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Road ecology blog: Railroad and farm road at multifunctional underpass, Austria

December 07, 2013 - Road ecology blog: Railroad and farm road at multifunctional underpass, under A4 motorway, Parndorf, Austria. Click her...
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Road ecology blog: Multifunctional underpass, Hwy 88 near Jackson, California, USA

December 03, 2013 - Road ecology blog: Multifunctional underpass, Hwy 88 near Jackson, California, USA. Click here for images of other mult...
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Road ecology blog: Broken wildlife fence, Sun Coast Parkway (Hwy 589), Florida, USA

November 23, 2013 - Road ecology blog: Broken wildlife fence leading up to underpass, Sun Coast Parkway (Hwy 589), Florida, USA. Click here...
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Road ecology blog: Multifunctional underpass, Parndorf, Austria

November 22, 2013 - Road ecology blog: Multifunctional underpass. Farm road, ditch and bike pedestrian pathway and well as a wildlife crossi...
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Road ecology blog: Wildlife underpass, Sun Coast Parkway (Hwy 589), Florida, USA

November 16, 2013 - Road ecology blog: Wildlife underpass, Sun Coast Parkway (Hwy 589), Florida, USA. Click here for more images of wildlif...
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Road ecology blog: Wildlife underpass, S.R. 260, Arizona, USA

September 16, 2013 - Road ecology blog: Wildlife underpass, S.R. 260, Arizona, USA. Click here for more images of wildlife underpasses. Lik...
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Road ecology blog: Wildlife underpass, S.R. 260, east of Payson, Arizona, USA

September 10, 2013 - Road ecology blog: Wildlife underpass, Little green Valley (west underpass), S.R. 260, east of Payson, Arizona, USA. Cl...
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Road ecology blog: Median of wildlife underpass, SR 260, SR 260, Arizona, USA

September 01, 2013 - Road ecology blog: Median of wildlife underpass, SR 260, Little Green Valley East underpass, SR 260, Arizona, USA. Clic...
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Road ecology blog: Wildlife cameras at crossing structures, Arizona, USA

August 27, 2013 - Road ecology blog: Wildlife cameras at crossing structures designed for desert bighorn sheep, Arizona, USA. For other i...
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Road ecology blog: Wildlife jump-out or escape ramp, Nevada, USA

August 25, 2013 - Road ecology blog: Wildlife jump-out or escape ramp, Nevada, USA. The jump-out is designed for desert bighorn sheep (Ovi...
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Road ecology blog: Multifunctional underpass for desert bighorn sheep, Nevada, USA

August 25, 2013 - Road ecology blog: Multifunctional underpass for desert bighorn sheep, Nevada, USA. This is a very complex set of mitig...
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Road ecology blog: Wildlife jump-out with bar for desert bighorn sheep, Arizona, USA

August 23, 2013 - Road ecology blog: Wildlife jump-out or escape ramp with bar for desert bighorn sheep (Ovis canadensis nelsoni), US Hwy...
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Road ecology blog: Support columns and support walls for wildlife underpasses

August 22, 2013 - Road ecology blog: Support columns and support walls for wildlife underpasses. Support columns for bridges result in a...
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Road ecology blog: Underpass for desert bighorn sheep, US Hwy 93, Arizona, USA

August 21, 2013 - Road ecology blog: Underpass for desert bighorn sheep (Ovis canadensis nelsoni), White Rock Canyon bridge, US Hwy 93, Ar...
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Road ecology blog: Multifunctional underpass, SP-225 motorway, Brotas, Brazil

July 23, 2013 - Road ecology blog: Multifunctional underpass, SP-225 motorway, Brotas, Brazil. Click here for other images of multi-fun...
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Road ecology blog: Inside a multifunctional underpass, SP-225, near Brotas, Brazil

July 18, 2013 - Road ecology blog: Inside a multifunctional underpass, SP-225, near Brotas, Brazil. Click here for other images of mult...
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Road ecology blog: Multifunctional underpass, SP-225, near Brotas, Brazil

July 18, 2013 - Road ecology blog: Multifunctional underpass, SP-225, near Brotas, Brazil. Click here for other images of multifunction...
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Road ecology blog: Fence and multifunctional underpass, SP-225, near Brotas, Brazil

July 17, 2013 - Road ecology blog: Fence and multifunctional underpass, SP-225, near Brotas, Brazil. Click here for other images of wil...
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Road ecology blog: Wildlife underpass, SR 260, east of Payson, Arizona, USA

July 13, 2013 - Road ecology blog: Wildlife underpass ("east underpass" at Little Green Valley) for deer (Odocoileus spp.) and elk (Cerv...
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Road ecology blog: Gate and fence associated with an underpass, near Havre, Montana, USA

November 16, 2012 - Gate and wildlife fence associated with an underpass, near Havre, Montana, USA. Gates allow for easy human access; for e...
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Road ecology blog: Wildlife fence associated with an underpass, near Havre, Montana, USA

November 15, 2012 - Wildlife fence associated with an underpass, near Havre, Montana, USA Like Marcel Huijser Photography on Facebook: http...
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Road Ecology Blog: wildlife jump-out, near Havre, Montana, USA

November 14, 2012 - This wildlife jump-out or escape ramp is located near Havre, Montana, USA. It allows animals that are trapped in the fen...
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Road Ecology Blog: Wildlife underpass, fencing and jump-outs, near Havre, Montana, USA

November 13, 2012 - Wildlife underpass, fencing and jump-outs, near Havre, Montana, USA. Click here for more images of the wildlife underpas...
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Road ecology blog: Wildlife underpass and overpass, US Hwy 93 on Flathead Indian Reservation

May 02, 2012 - Most of the wildlife underpasses along US Hwy 93 on the Flathead Indian Reservation in Montana are elliptical metal culv...
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