Emergency Inspection and Monitoring of Bridge 1-813, I-495 Over the Christina River

Emergency Inspection and Monitoring of Bridge 1-813, I-495 Over the Christina River

Emergency Inspection and Monitoring of Bridge 1-813, I-495 Over the Christina River

Bridge 1-813 carries approximately 90,000 vehicles a day on northbound and southbound Interstate 495 in Wilmington, Delaware. After transverse rotations were observed causing median barriers to be out of alignment by as much as 17 inches, Pennoni’s Intelligent Infrastructure Systems (IIS) provided emergency inspection and monitoring to determine the cause. It was determined that a large earth embankment placed adjacent to the structure, caused compression of the underlying soft soils and lateral pressure on the bridge foundations. Tilt sensors were installed to continuously monitor rotations via real-time data collection. The bridge was re-opened to traffic within two months.

Infrastructure

Transportation

Transforming communities for more than 55 years

Throughout five decades, our commitment to elevating the impact of our outcomes through personalized service has been steadfast. We have the flexibility to be innovative in our approach with the integrity to get things right.

We approach the start of every project as the beginning of a collaboration because we understand the value of partnership. As a multidisciplinary firm, Pennoni has the ability to approach engineering challenges from a wider spectrum of angles than most. From land development to energy management, our expertise runs deep and our passion for problem-solving runs even deeper.

Evolving Capabilities

Ever-expanding with growing businesses

55+ Years Experience

Longevity
meets flexibility

40+ offices

40+ Offices

Local Partners, National Possibilities

1,300+ people

1,400+ People

100%
employee-owned