The proposed scheme consists of a new viaduct structure that will cross the River Dyfi upstream of the existing bridge near Machynlleth in Powys.
The new bridge will improve capacity and resilience on the A487, an important link between North and South Wales. The current crossing is narrow and regularly closed by floods or damage by vehicles causing long diversion routes and disruption.
Wales’ transport minister Edwina Hart said: “The A487 is an important part of the Welsh north-south and east-west trunk road network. However the current Dyfi Bridge creates a pinch-point on this important road. This new bridge will greatly improve safety, journey times and network resilience, while enabling the historic Grade II* listed original bridge to remain in place.”