Alpha & Omega Group, as a consultant to SNC-Lavalin Atkins, assisted NCDOT Division 6 with the replacement design of Bridge 080175 on Singletary Mill Pond Road over Crawley Creek. A&O’s scope included hydraulic, erosion control, permit drawings, and structural design services.

 A&O completed a bridge survey report and drainage plans, providing information and supporting computations as prescribed in the NCDOT Hydraulics Unit “Guidelines for Drainage Studies and Hydraulic Design.” We produced a preliminary general drawing and final structure plans of the bridge according to the sub-regional tier design guidelines and standardized cored slab bridge plans. The cored slab bridge is on a horizontal curve and required a long chord layout.

A&O provided permit documentation and drawings for the Division 6 environmental officer and produced erosion and sediment control plans to be reviewed by the DDC Engineer.


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