About: http://webisa.webdatacommons.org/406826343

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The primary structural purpose of a tunnel is to support the tunnel against pressures from the surrounding soil, water and other loads.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov