For instance, limited right-of-way in the highly-developed area coupled with highly congested traffic meant that the bridge had to clearspan the entire six-lane highway -- resulting in a 269-foot-long span. Also, the bridge is on a severe skew angle, and the structural depth of the bridge is limited by roadway geometry and clearance requirements. Cast-in-place concrete was used as the structural material.

The Alderwood Mall Boulevard Overcrossing Bridge was build as part project to construct a series of bridges that will make it easier for shoppers to get to Alderwood Mall. Included, are three new bridges to carry traffic over 196th Street Southwest and two I-5 freeway ramps.

The three bridges are part of an $80.4 million interchange improvement project on Interstate 5 that involves the city of Lynnwood, the Transportation Improvement Board and the state Department of Transportation. Planning for the project began back in 1990.