DETROIT (AP) -- An analyst who helped on a 2011 independent study of a new commuter bridge between Detroit and Canada believes the failure to pass a ballot proposal aimed at stopping construction may not have ended the legal fight over the span.

Colby Spencer says it's unlikely Tuesday's defeat of Proposal 6 requiring voter approval for any new border crossing will end Ambassador Bridge owner Manuel "Matty" Moroun's challenge to a planned government bridge.

Spencer is a senior analyst with the East Lansing-based Anderson Economic Group.

Gov. Rick Snyder and Canadian officials have agreed to build the bridge between Detroit and Windsor, Ontario. It would be the stiffest competition to the $60 million grossed annually by the Ambassador Bridge.

Spencer says operators of the Ambassador Bridge "don't want competition from any entity."