Squirrel Bridge
A squirrel bridge is a construction that - similar to a green bridge - is intended to enable small animals, especially squirrels , but also martens and other small animals, to safely cross busy roads. In Germany there are so far (as of 2014) two rope bridges that are stretched between trees. The Nutty Narrows Bridge in the USA from 1963, which was constructed somewhat more elaborately than a suspension bridge , is considered the first of its kind.
These bridges are a measure for species protection and the cohesion of natural habitats, which serve both animal protection and accident prevention.
The costs vary significantly, depending on the construction: While simple rope constructions, e.g. B. the one in Brecht , Belgium , costs from around 250 euros , the bridge built in The Hague in 2013 is likely to be one of the most expensive squirrel bridges at around 150,000–200,000 euros (other sources: 20,000 euros) and a half year construction period. According to press reports, the latter is apparently ignored by the squirrels.
An alternative to bridges (but of course not for squirrels) are underpasses - amphibious tunnels - under the roadway.
List of squirrel bridges
Depending on the continent, the bridges named below serve to protect the European squirrel or the gray squirrel native to North America , which in turn is hunted in Europe as the neozoon that displaces the native squirrel species .
| image | country | place | year | Type / number | comment |
|---|---|---|---|---|---|
| United States | Arizona , Mount Graham | 2010 | 41 rope bridges | ||
|
United States | Nutty Narrows Bridge , Longview, Washington | 1963 | Suspension bridge | |
| Belgium | Brussels , Ring 0 | 2013 | Ropes / nets and steel tube, in connection with a sign gantry | ||
| Belgium | Brecht , Andrélaan | 2013 | Two rope bridges | ||
| France | La Rochelle , Parc Franck-Delmas / Parc d'Orbigny | 2012 | Rope bridge | "Écureuilloduc" | |
| Netherlands | Rijksweg 12 , kilometer 73.90 | 2012 | |||
.jpg)
|
Netherlands | The Hague , Benoordenhoutseweg | 2012 | ||
|
Netherlands | Amsterdam , Europaboulevard at Amstelpark | 2011/2012 | Ropes running in parallel with a network connection. | |
| Netherlands | Roermond , Heinsbergerweg | 2013 | |||
|
Germany | Berlin-Friedrichshagen , Müggelseedamm | 2014 | Rope bridge | |
| Germany | Vlotho , Burgstrasse | 2012 | Rope bridge | ||
| United Kingdom | Scotland , Aberdeen | 2008 | |||
| United Kingdom | England , near Formby (England) | 2004 | Rope bridge |
Similar concepts for other animal species
| image | country | place | year | Type / number | comment |
|---|---|---|---|---|---|
| Australia | Victoria , near Benalla | 2007 | Rope bridge | Used by flying squirrel bucks , fox kisses and ring bucks | |
| Australia | Victoria , Longwood | Rope bridge | Used by flying squirrel bucks , fox kisses and ring bucks | ||
| Kenya | Diani Beach | 1997 | around 200, "rope ladder construction" | "Colobridges", used by Colobus |
Web links
- Why did the squirrel cross the road? Science and technology news, University of Leeds, 2008
- Squirrel Bridges and Road Warning Signs
- Brendan D. Taylor, Ross L. Goldingay: Can Road-Crossing Structures Improve Population Viability of an Urban Gliding Mammal?
Individual evidence
- ↑ Plaatsing boombrug over de ring om Brussel (R0), July 10, 2013, accessed on March 14, 2014 ( Memento of the original of March 27, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Voor diegene die weleens over de Benoordenhoutseweg in The Hague rijden, no onopgemänke zijn gebleven ... omroepwest.nl, October 11, 2012, accessed on March 16, 2014
- ↑ Peter Koop: Haagse eekhoorns laten brug van 1.5 ton links liggen, ad.nl, January 24, 2014, accessed March 15, 2014
- ↑ Project E: eekhoornbrug, youtube.com
- ↑ John Wetenhall: Arizona Spends $ 1.25M to Save 250 Squirrels abcnews.go.com, June 17, 2010
- ↑ Plaatsing boombrug over de ring om Brussel (R0), July 10, 2013, accessed on March 14, 2014 ( Memento of the original of March 27, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Primeur: boombrug in Zoniënwoud, zonienwoud.be
- ↑ Neel Vermeiren: Bomen Andrélaan verbonden met touw. Brug helpt eekhoorns bij het oversteken December 12, 2013, accessed on March 15, 2014
- ↑ L'écureuil n'a pas le vertige, http://www.sudouest.fr, March 14, 2012, accessed on March 16, 2014
- ↑ Boombruggen, mjpo.nl, accessed on
- ↑ a b The Hague heeft de duurste eekhoornbrug rtlnieuws.nl
- ↑ Eekhoorns negeren peperdure brug De Telegraaf, October 18, 2013, accessed on March 15, 2014
- ↑ Eekhoornbrug description with photos
- ^ Application in the municipal council, September 2013
- ↑ Berlin's first squirrel bridge, berliner-kurier.de, March 7, 2014, accessed on March 14, 2014
- ↑ first squirrel bridge , mt-online.de, October 1, 2012, accessed on March 14, 2014
- ↑ piratenpartei-herford.de, Dennis Deutschkämer: Piraten erect squirrel bridge (with webcam videos), mt-online.de October 29, 2012, accessed on March 14, 2014
- ↑ Squirrel Bridge To Be Built Over New Aberdeen Bypass buildscotland.co.uk, May 28, 2008, accessed March 15, 2014
- ↑ Rope bridge helps save squirrels , news.bbc.co.uk, March 1, 2004
- ↑ June 2008. Early success in protecting native animals from roads and traffic
- ↑ Colobridges for Primate Conservation, colobusconservation.org July 1, 2013, accessed March 16, 2014
