Stormwater

Port Access Road

Client
Flour-Lane SC and SCDOT
Date
2017 - 2019
Disciplines
Construction Administration & Inspection
Environmental
Surveying
Transportation Engineering
Stormwater
Objectives

Davis & Floyd consulted with SCDOT during the development of the complex Port Access Road (PAR). By forming a direct route between I-26 and the Naval Base Terminal, PAR will improve traffic flow in the area. Commercial and large truck traffic will easily be integrated into the everyday commute. Additionally, PAR will remove large vehicles from local, urban streets creating a safer environment for all.

Scope

Conducted field surveys to verify existing surveys provided in the RFP: drainage structures, bridge structures, and key property corners

Provided roadway design services for local roads

Designed hydrologic and hydraulic drainage systems

Designed stormwater system with manufactured treatment devices

Coordinated and designed traffic control

Created bridge and seismic deign for three Bridges: Tidewater Avenue: Curved 746’ flat slab bridge; Bainbridge Connector: 1040’ flat slab bridge; Stromboli Avenue: Curved 645’ bridge consisting of flat slab, Type IV AASHTO girders and 72” modified T beams

Coordinated with utilities and railroad

Challenges

The urban location required tactful execution to avoid disturbing local regimen.

All excavated material was strictly monitored due to toxicity levels in soil.

Outcome

In the design-build pre-bid process, Davis & Floyd distinctively reconfigured multiple bridge layouts to decrease area and weight. Not only did this create a smaller footprint, but it also allowed for the use of pile and cap construction, resulting in significant savings for SCDOT.

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