|Location Map ( geo)|
|Comhairle nan Eilean Siar|
For roughly a century Vatersay has been the most southerly inhabited island in the Western Isles chain, but by the 1980s this status was becoming much harder to maintain. The only access to Vatersay was a passenger-only ferry from Castlebay on Barra, and the pier was difficult to berth at, especially at certain states of the tide.
After lengthy feasibility studies, work got under way in 1989 and took 18 months to complete. The channel is 250m wide, and at least 11m deep, requiring 220,000 tonnes of rock to carry the single-track road across. Despite the significant tidal changes through the channel, there are no bridges in the causeway.