man walks frozen shoreline under lake champlain bridge

152 air arch arched bedrock border bridge cantilever cap carrying champlain cold commute commuters concrete crown crowne design dressed early economic economy engineered engineering flat fresh frozen guy historic historical iced illuminates infrastructure interstate iron jacket lake limestone man necessity new point rocky route seasonal shore shoreline single site state steel still structural sunshine temperatures thin things toward transportation travel truss trusses vehicles vermont visit walks waterway winter york