The maximum skew angle for box beam bridges is 30° without modification to standard drawings.

The minimum gap between adjacent box beams in 1 in. and the maximum gap is 2 in.

A 5 in. minimum thickness composite concrete slab overlay is required. A 2 in. minimum thickness asphaltic concrete pavement (ACP) overlay can be used in lieu of the concrete deck for low-volume roadways at the discretion of the District.