Completed in 1989, the Perdido Pass Bridge won the Grand Award for Engineering Excellence for the Alabama section of the American Consulting Engineers Council and the Outstanding Engineering Achievement award from the Alabama Society of Professional Engineers.
Volkert was responsible for the final design and contract plans for 1,623 feet of bridge across a narrow waterway where Perdido Bay meets the Gulf of Mexico for the Alabama Department of Transportation.
The structure consists of two 35-foot roadways with a four-foot raised median and two five-foot sidewalks with a safety fence. Dual bridges supported on T-piers span two skewed navigation channels that are 100 feet wide.
The Perdido Pass Bridge was the first bridge in Alabama to use the Bulb Tee 72 girders on long spans. Above-water strutted footings are supported by 36-inch square prestressed concrete piles. Girders were designed without longitudinal stiffeners or lateral bracing and with constant flange width between field splices. The resulting lack of clutter and the curved alignment contribute to a graceful structure that has aesthetic appeal from land and water.