Mae’r fenter ar y cyd sydd yn adeiladu ffordd osgoi Caernarfon a Bontnewydd wedi cyrraedd carreg filltir fawr, wrth i’r gwaith dur gael ei godi ar ddec y ddwy draphont sy’n rhan allweddol o’r cynllun.
The joint venture delivering the Caernarfon and Bontnewydd bypass has reached a major milestone as steel erection gets underway on the bridge decks of the two viaducts which are a key part of the scheme.