As well as preserving fish stocks, construction of the pass has avoided the energy costs connected with using the usual steel and reinforced concrete. Instead, the whole pass has been built with sustainable Welsh Oak.
The bridge sill at Pont Wen had previously restricted fish passage for nearly 15 years. Fish were finding it difficult to swim past the structure and access the prime spawning and nursery areas upstream.
The new pass will ensure full access to the upper reaches of the Bran and help safeguard the future of salmon, sea trout, brown trout, eels and other important conservation species like sea lampreys.
Dave Charlesworth, EA fisheries officer said: “This has been a great project to be involved in and hopefully the improved access for fish to the River Bran will help to bolster returning adult fish populations in the main river Tywi, a fishery of international renown and great importance to the local rural economy.”