Conservation Evidence strives to be as useful to conservationists as possible. Please take our survey to help the team improve our resource.

Providing evidence to improve practice

Individual study: Use of badger tunnels on Highway Agency schemes in England

Published source details

Eldridge B. & Wynn J. (2011) Use of badger tunnels on Highway Agency schemes in England. Conservation Evidence, 8, 53-57


Monitoring of badger tunnels using clay mats on nine Highways Agency road schemes was undertaken to establish their effectiveness in terms of use by large mammals (primarily European badger Meles meles), as well as the efficacy of tunnel design advice provided by the agency.  The results indicate that tunnels are an effective means of mitigating the effects of all types of new road schemes on badgers; 89% of the tunnels monitored were used.  The results suggest that no one factor is of over-riding importance in tunnel design; however, design features that appeared to be associated with the use of tunnels were good vegetation cover, habitat connectivity, good drainage and a tunnel width of at least 600 mm.