A small bridge would definitly be cheaper, but probably not by a lot. Much of the expense is going towards site preparation for installing the new bridge which involves removing the old one. The city also wanted a bridge large enough to allow emergency and park maintenance vehicles to cross without issues. There is an itemized list with cost estimates listed in the Missman Inspection Report from last fall on page 25 of the PDF (Attachment C: Pg 2 in the report).