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A team from the
University of Leeds examined the effectiveness of bat bridges, gantries and underpasses. They found that one underpass, placed on a commuting route, was used by 96% of bats, but few bats used the other underpasses and gantries, preferring routes which put them in the path of traffic.
407:
One structure consists of three steel towers with cables suspended between them carrying mesh panels. The other consists of a single span of cables and mesh panels between concrete and steel anchors either side of a cutting. In the
Dobwalls scheme, a third bat-crossing consisted of a raised parapet
745:
82:, and to cause the bats to cross the roadway at a sufficient height to avoid traffic. Bats are thought to follow the lines of hedgerows and woods, and removing these may confuse the bats.
85:
The theory is that these "bridges" will be seen by the bats' sonar as linear features sufficiently similar to the old hedgerows as to provide an adequate substitute. The
English
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At A38 Dobwalls Bypass, the bridges are more elaborate and sophisticated than the earlier Welsh structures, which consisted of cables strung from poles.
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814:"New Bat bridge for bypass : Marishal Thompson Group - Tree Subsidence, Arboriculture, Ecology and Landscape Architecture throughout the UK"
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A bat bridge was installed following the upgrade of the A497 to help the six species of bats in the area to cross the road.
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Two bat bridges were constructed during road upgrade in locations where full bridges previously stood.
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is performing a study of those on the
Dobwalls bypass to determine if this assumption is justified.
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is a structure of varying construction crossing a new or altered road to aid the navigation of
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916:"How did the bats cross the road? By using the special 'bat bridge' - Nature, Environment"
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in 2011, for being funded "at a time when we're having to cut a lot of public spending".
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Please help update this article to reflect recent events or newly available information.
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Roads, Bat
Bridges and Gantries: A position statement from Bat Conservation Trust
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864:"UK | Wales | North West Wales | 'Green' road helps bats to cross"
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889:"Bats reject 'safe way' bridges over Norfolk - Suffolk dual carriageway"
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by various agencies, including the
Highways Agency, with support of the
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203: in this section. Unsourced material may be challenged and removed.
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Berthinussen, Anna; Altringham, John; Fenton, Brock (13 June 2012).
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Two additional bat bridges were completed in
November 2012 near
1033:"Do Bat Gantries and Underpasses Help Bats Cross Roads Safely?"
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Seven bat bridges on the
Norwich Northern Distributor Road.
694:. Western Morning News, The Plymouth (UK). April 5, 2008
842:"House of Lords Written Answers 10 November 2009: Bats"
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The first bridge to be installed in France is on the
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Un couloir à chauves-souris, Sud-Ouest, février 2012
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Two metal bridges were built in 2013 to protect the
692:"New bypass going 'batty' to help the environment"
640:The overall cost of bat bridges was criticised by
593:Special Area of Conservation which is home to a
408:modification to a new road bridge, Havett Road.
786:"A11 Elveden bypass to be shut for bat bridges"
771:[Around 400,000 euros were spent on it]
16:Road construction to aid the navigation of bats
1018:"Bridges too far? The £500,000 bat crossings"
8:
734:Photographies de l'installation des ouvrages
165:. The structures cost £375,000 (400,000 €).
967:"Norwich NDR bat bridges 'are not working'"
941:"Road closure for new aerial bat crossing"
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836:
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769:Rund 400 000 Euro wurden dafür ausgegeben
746:"Warum fliegen die nicht einfach drüber?"
275:Bat bridges have been implemented in the
263:Learn how and when to remove this message
816:. Marishalthompson.co.uk. Archived from
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395:Structure 1: 59.47 m, Structure 2: 70 m
998:. Norfolk County Council. 21 Apr 2015
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201:adding citations to reliable sources
1085:. University of Leeds. 14 June 2012
993:"Detailed section plan of the NDR"
324:Stainburn and Great Clifton Bypass
290:Bat bridges in the United Kingdom
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914:Roberts, Geneviève (2007-03-31).
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338:Single (three-lane carriageway)
188:needs additional citations for
122:motorway between junctions for
78:following the destruction of a
1:
1050:10.1371/journal.pone.0038775
755:. 2013-11-02. Archived from
662:Amphibian and reptile tunnel
66:Bypass, Cornwall, UK. (2009)
844:. United Kingdom Parliament
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589:The road runs through the
307:Single or dual carriageway
32:This article needs to be
1083:"Bat bridges don't work"
281:Bat Conservation Trust
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1133:Conservation projects
753:Kölner Stadt-Anzeiger
723:Reportage de France 3
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595:lesser horseshoe bat
197:improve this article
159:Biberach an der Riss
415:Parton to Lillyhall
401:At Grade/In Cutting
351:High and Low Newton
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163:Baden-Wuerttemberg
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106:Bat bridge on the
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947:. 30 January 2010
895:. 22 October 2015
672:Wildlife crossing
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1087:. Retrieved
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872:. Retrieved
870:. 2006-05-02
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846:. Retrieved
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818:the original
794:. Retrieved
792:. 2014-08-04
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757:the original
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696:. Retrieved
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313:Approx. cost
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212:"Bat bridge"
207:
195:Please help
190:verification
187:
152:
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134:department.
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71:
69:
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538:Abergavenny
536:Gilwern to
1117:Categories
926:2009-09-12
899:27 January
874:2009-09-12
824:2009-09-12
796:2015-04-02
698:2009-09-12
678:References
624:£1,000,000
591:Glynllifon
555:Embankment
461:In cutting
452:April 2009
368:In cutting
359:April 2008
223:newspapers
145:motorway.
72:bat bridge
636:Criticism
476:Criccieth
392:June 2008
310:Placement
141:, on the
124:Roquefort
1069:22719941
1037:PLOS ONE
971:BBC News
945:BBC News
922:. London
893:BBC News
868:BBC News
790:BBC News
656:See also
597:colony.
568:Groeslon
526:£350,000
493:At Grade
472:Pwllheli
464:£60,000
435:£34,133
423:Dec 2008
404:£300,000
381:Dobwalls
371:£45,000
139:Balbigny
112:Balbigny
80:hedgerow
64:Dobwalls
1138:Bridges
1089:15 June
1060:3374807
763:2 April
644:in the
605:Norwich
523:Various
506:Elveden
237:scholar
149:Germany
130:in the
110:, near
34:updated
1067:
1057:
1002:11 Dec
977:26 Jan
951:5 June
848:5 June
582:Single
490:Single
458:Single
335:Gantry
301:Opened
239:
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132:Landes
98:France
996:(PDF)
610:A1270
319:Ref.
244:JSTOR
230:books
128:Caloy
93:Usage
1091:2014
1065:PMID
1004:2017
979:2020
953:2011
901:2020
850:2011
765:2015
619:Dual
614:2017
577:2010
573:A487
552:Dual
547:2007
543:A465
520:Dual
515:2014
485:2006
481:A497
474:and
455:19.5
429:Dual
426:34 m
419:A595
398:Dual
365:Dual
362:33 m
355:A590
298:Road
295:Name
216:news
126:and
76:bats
1055:PMC
1045:doi
511:A11
448:A69
388:A38
328:A66
199:by
157:at
143:A89
120:A65
108:A89
61:A38
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