This photo is of the Upper, or Hooker Bridge. It was used by Hooker's I Corp to cross the Antietam Creek on the afternoon of the 16th. After dark, the XII Corp was then ordered to cross the Creek over this bridge following Hooker's troops. During late morning of the 17th, the VI Corps also crossed over this bridge.

Although a few random Confederate Artillery shots struck nearby while the I Corps crossed, no actual fighting took place here; the Confederates made no attempt to guard this crossing.

Today, this bridge is still in service. Of the four stone stone bridges that crossed the Antietam (the others being the Middle, Lower, and Antietam bridges), this one is the smallest, resembling a smaller, more angular version of the more familiar Lower bridge.

The Middle bridge closely resembled the Lower bridge; in fact, photographs of it often misidentify it as the Lower bridge. It was destroyed in the late 1890s by a severe flood.

The Lower bridge has its own tour stop.

The Antietam bridge, at the mouth of the Antietam at the Potomac, played no role in the battle of the 17th. Like this bridge, it is still in service. It is much larger, the only one of the four to have four spans.