Structures Field Review Site 11 2015Brunswick/New Hanover CountyWilmington Bridge Replacement of Existing Dual Bridges (No. 103 and 105) on US-17/74/76 over Brunswick River

​Issue

Steel intermediate cross-frames between the 63-inch prestressed Florida I-Beams are shallow.

Action Item

Structures will investigate the use of deeper cast-in-place concrete diaphragms for these girder types, or deeper steel cross-frames with similar cross-frame-to-girder depth ratios considered practical for steel rolled beams and plate girders.

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