When it was in rail service, the bridge carried the Great Northern Railroad's Empire Builder trains. That rail route is the only one to still serve the Minneapolis-St. Paul area, although the only station is in St. Paul, about halfway between the downtown areas of the two cities.
External links
Stone Arch Bridge (http://www.nps.gov/miss/maps/model/sabridge.html)
Stone Arch Bridge (http://www.ci.minneapolis.mn.us/about/stonearch.asp)
Stone Arch Bridge (http://www.minnesotabound.com/visit/StoneArchBridge)