![Philadelphia Tackles CSOs With Precast Concrete Box Culvert](https://cole-mswmag.imgix.net/https%3A%2F%2Fwww.mswmag.com%2Fuploads%2Fimages%2Fimg_0589a.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=0688f424a55cd6e82ad263651f5569e7)
Oldcastle Precast supplied an 11-foot by 11-foot precast concrete box culvert with a V-shaped channel for the $12.5 million Laurel Street CSO improvement project in Philadelphia. It replaced the existing 100-year-old, 16-foot-diameter brick combined sewer outfall.
It was...