Designing a new, three-fifths of a mile bridge presents many challenges. For the Back River Bridge project in Savannah, Georgia Qk4 was prepared to add one more challenge to the mix: partnering with two state DOTs.
Qk4’s design replaced the existing 60-year old bridge to increase safety for vehicles around Savannah’s vibrant harbor and commercial center, which has been experiencing incredible growth. The bridge connects Chatham County, Georgia with Jasper County, South Carolina, and traverses an area with diverse marine life. All this meant that Qk4 needed to skillfully navigate the many interested and impacted government entities essential to project success.
In addition to our client, the Georgia Department of Transportation, the success of our design depended on our coordination with:
The City of Savannah
Savannah Metropolitan Planning Organization
Chatham County, GA
South Carolina DOT
Jasper County, SC
Georgia Port Authority
US Environmental Protection Agency
Georgia Environmental Protection Division
South Carolina Department of Health and Environmental Control
US Corp of Engineers
National Marine Fisheries.
We prepared the concept report, surveys, right-of-way plans, and construction documents for this one-mile corridor of US 17. In addition to coordination with both states, the project required reconstruction of an interchange with Hutchinson Island, and a tie-in to the existing Talmadge Memorial Bridge. Construction staging plans were developed so all traffic movements for the interchange remained open for the duration of construction.
Notable features of the project included:
Construction of a new 3290-foot two lane bridge over the Back River
Coordinating with two state DOTs and several government agencies
Maintaining traffic movement throughout construction
Realignment of existing roadway, and construction of two new on/off ramps
Construction included 48 bents constructed with 24-foot-square PSC Piles