Beth fyddai'r gost o gloddio twnnel i ddarparu trydedd ffordd o groesi'r Fenai?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 16/11/2022
The WelTAG stage 2 approximate costs, excluding the new highway links required outside the tunnel, would have been in the region of £495m to £627m (at 2017 prices and including VAT). At 2022 prices, the cost of the tunnel alone could be in the region of £645m to £815m including VAT but excluding any future inflation.