
Historically, bridges were covered to protect their wooden surfaces from the weather. Today, covered bridges are viewed as charming but rare artifacts of our past. Pennsylvania, the site of the first covered bridge in the United States (over the Schuylkill River in Philadelphia),...

Historically, bridges were covered to protect their wooden surfaces from the weather. Today, covered bridges are viewed as charming but rare artifacts of our past. Pennsylvania, the site of the first covered bridge in the United States (over the Schuylkill River in Philadelphia),...

Historically, bridges were covered to protect their wooden surfaces from the weather. Today, covered bridges are viewed as charming but rare artifacts of our past. Pennsylvania, the site of the first covered bridge in the United States (over the Schuylkill River in Philadelphia),...