AASHTO LRFD Bridge Design Specifications

The AASHTO LRFD Bridge Design Specifications are guidelines created by the American Association of State Highway and Transportation Officials to ensure that bridges are designed safely and efficiently. "LRFD" stands for Load and Resistance Factor Design, which is a method that accounts for various factors affecting a bridge's strength and stability. By using these specifications, engineers can create bridges that can withstand expected loads, such as vehicles and environmental conditions, while also considering safety and cost. These standards help maintain reliability and performance in bridge construction across the United States.