Located in the heart of Newberry, SC, the Boundary Street Bridge runs along South Carolina Highway 34 (SC 34) and crosses over two CSX railroad tracks. On behalf of the South Carolina Department of Transportation (SCDOT), STV provided structural design services to replace an existing outdated structure, improving the area’s infrastructure.
The new Boundary Street Bridge is the first decked girder bridge in the state of South Carolina, marking a significant milestone for SCDOT. It is a decked Type III girder bridge with a seven-foot-wide top flange and utilized Ultra-High-Strength Concrete to fill the joints between the flanges, enabling faster and more efficient construction.
Funded by a federal grant, the project was part of an SCDOT pilot study to test the feasibility of decked girder bridges in the state. This innovative design posed unique challenges due to the site’s complex geometry, which included a steep vertical curve, a horizontal curve and a skewed alignment.
STV’s team leveraged their expertise to overcome these complexities and successfully deliver South Carolina’s first decked girder bridge, setting a new precedent for infrastructure projects in the region.
7 ft
top flange width
9.5 in
haunch height
106 ft
total bridge length
