Potomac River Guide Home

Interactive Maps

The Lower Potomac

The Potomac Estuary

Mount Vernon to Anacostia River

Mall Area

Georgetown to Great Falls

Potomac Piedmont

Upper Potomac

The North Branch

Boat Ramps

Monitoring Sites

Bridges and Ferries

Cruises and Charters

Search Potomac Sites

Also Explore

The Hudson River GuideThe Delaware River Guide
NEW! The Connecticut River Guide

Cabin John Aqueduct Bridge

Historic Bridge

Photo of Cabin John bridge

Designed and built by the U.S. Army Corps of Engineers in 1864, the Cabin John Aqueduct Bridge carries both water and vehicles across Cabin John Creek. It was originally known as the Union Arch Bridge and built under the direction of Lt. Montgomery C. Meigs, who also supervised the construction of the U.S. Capitol.

Built of sandstone and granite, the bridge spans 220 feet over the Cabin John Creek. When it was built, it was the longest single-span masonry arch in the world.

Suggested Links

Click here for larger map and nearby sites.

Contact Information
U.S. Army Corps of Engineers
7398 MacArthur Blvd.
Cabin John MD 20817