NW Maple Avenue Bridge Aesthetics, Economy and Constructability in a Modern Cast-in-Place Arch Bridge Jim Bollman, P.E., OBEC Consulting Engineers, Eugene, OR Incremental Launching of Bridges in Europe Marco Rosignoli, HNTB Corporation, Bellevue, WA Lightweight Concrete Long Span Bridges Jiri "George" Gruygar, TRI, Salt Lake City, UT