Proj Overview

Project Overview

In 2005, Hurricane Katrina destroyed the U.S. 90 Bridge over Biloxi Bay, which connects the communities of Biloxi and Ocean Springs, Mississippi, carrying approximately 35,000 vehicles daily. The replacement project includes new dual 1.6-mile-long bridges over the bay that carries three lanes of traffic in each direction and a shared-use path.

The project was designed to resist a Category 5 hurricane, with the precast being erected in just 16.5 months and with the entire project completed in about 20 months. The bridge includes many aesthetic features such as colored concrete, open concrete traffic barriers, ornamental aluminum picket pedestrian railing, sidewalk overlooks with benches, and ornamental night accent lighting.

Precast Solution

The new structure consists of a 250-foot navigation span comprised of precast bulb-tee girders that vary in depth from 12 feet at the piers to 6.5 feet at mid-span. The approach spans consist of prestressed bulb-tee girders with span lengths of 85 feet to 150 feet. The piers are subjected to vessel collision loads and are supported by waterline footings on 24-inch and 30-inch precast piles.

 

Awards
2011 PCI Design AwardsTransportation Award: Best Bridge with a Main Span over 150 Feet
Project Team

Engineer

Parsons Corporation, Chicago, IL

General Contractor

Massman Construction, Kansas City, MO

Owner

Mississippi Department of Transportation, Mississippi

Precaster

Gulf Coast Pre-Stress Inc, Pass Christian, MS
Standard Concrete Products, Inc.

Precast Speciality Engineer

Standard Concrete Products, Theodore, AL

Key Project Attributes

Key Project Attributes

  • Designed to resist a CAT 5 Hurricane.
  • Bulb-tee girders create 250-foot navigation span
  • Precast erected in 16.5 months

Project/Precast Scope

Project and Precast Scope

  • Deck area: 1,110,359 ft2
  • Bridge length: 8,766 ft
  • Prestressed bulb-tee girders have span lengths of 85 ft to 150 ft