Number 9: J.T. Butler Blvd. Interchange and State Road 9A

A 2,072-ft-long trestle bridge over wetlands and the Sawmill Slough environmental area is the centerpiece of this job. The bridge will be built on concrete girders instead of embankment. It is 20 ft above the ground and will prevent lasting damage to the wetlands.

Location: Jacksonville, Fla.
Cost: $80 million
Length: 5,280 ft
Type: Structural steel box girders
Designer: H.W. Lochner Inc.
Owner: Florida DOT
Contractor: Superior Contractor Inc.