isthmus

construction, building (of a dam, bridge, or other large project) / establishment of an organization

construct, build (a large project, e.g. a dam, a bridge, a skyscraper, etc.) / establish an organization

go across, go over / migrate

an advance; progress

make progress

that which is constructed to connect two points for the purpose of transportation: a bridge / a bridge-like walkway or corridor between two buildings in a manor, palace, castle, or similar structure

a plan, planning, schedule, conception

to plan, to make a plan, to plot, to lay out

bridge