Carquinez Strait (KAR-KEE-nez), W Calif.; 8 mi/12.9 km long, c.1 mi/1.6 km wide at narrowest point. Swift tidal strait connecting Suisun Bay with N part (San Pablo Bay) of San Francisco Bay. Part of deep water shipping channel to Sacramento. Contra Costa co. (S), Solano co. (N). Just SE of Vallejo is Carquinez Bridge, also RR highway bridges at Martinez.
