The Bridge Lee's Army Crossed to Get Home

Marsh Creek isn't much of a river. Most summers you could wade it without soaking your knees. But the wooden bridge that spans it a few miles southwest of Gettysburg, Pennsylvania has watched more history pass over its planks than bridges ten times its size, and it's still standing a hundred and seventy years later mostly out of stubbornness and a few very determined preservationists.

Photo by Carol M. Highsmith, Library of Congress (no known restrictions on publication), via Wikimedia Commons — landing page

Built for $1,544, Not for a Battle

David S. Stoner and his crew put the Sachs Covered Bridge up between 1852 and 1854, a hundred feet long and just over fifteen feet wide, using a design licensed from the Connecticut architect Ithiel Town. Town's lattice truss was the cheap, clever alternative to the heavier timber trusses of the day: instead of massive beams that needed skilled joinery, builders crisscrossed lighter planks into a diagonal lattice and pinned them with wooden trunnels. Almost anyone with a saw and an auger could build one. The whole bridge cost $1,544, which even in 1854 dollars was a bargain for something meant to carry wagon traffic across a creek for the next century.

Nobody involved in that project could have guessed what would cross it nine years later.

July 1863

On July 1, 1863, two brigades of the Union I Corps rumbled over the bridge heading toward Gettysburg, followed shortly by the III Corps making for the Black Horse Tavern. Three days of fighting later, with the Confederate assault broken on Cemetery Ridge, the bulk of Robert E. Lee's Army of Northern Virginia retreated back across the very same planks on July 5, hauling wounded men and what was left of their supply train toward the Potomac. A hundred-foot wooden bridge over a creek most people have never heard of ended up as one of the last things thousands of soldiers saw on their way out of Pennsylvania. It's a strange kind of fame for a piece of civil infrastructure, and it's the reason the Pennsylvania Department of Highways named it the state's "most historic bridge" in 1938, ahead of plenty of grander spans.

That wartime traffic, incidentally, is also why locals will tell you the bridge is haunted — soldiers wandering the creek bank at dusk, footsteps on the deck when nobody's crossing. I can't vouch for any of that personally, but Gettysburg has never needed much encouragement to lean into a ghost story, and a covered bridge with actual Civil War blood on its history is about as good a setting as folklore gets.

From Traffic Bridge to Footbridge

The bridge kept carrying cars for over a century after the war, which is longer than most of its Town lattice contemporaries managed. Officials finally closed it to vehicles on May 9, 1968, after a plan to replace it outright met local resistance — a fight preservationists won, though only by giving up the bridge's job as an actual road crossing. It's been foot traffic only ever since. The National Register of Historic Places added it to the list in August 1980, which normally would have been the last dramatic chapter in a bridge's story.

It wasn't. On June 19, 1996, a flash flood tore through Marsh Creek and knocked the bridge clean off one of its stone abutments, the same flood that wrecked two nearby iron bridges entirely. The timing was almost insulting — a $500,000 restoration project was already underway when the water hit. Adams County raised another $100,000 to cover the flood damage on top of that, and the bridge went back on its footings and reopened at a rededication ceremony on July 21, 1997. Say what you want about bureaucratic restoration budgets, but that's a bridge the community clearly wasn't willing to let go of twice.

Not the Only One in the County

Sachs isn't Adams County's only covered bridge, just its most storied one. A few miles away near Fairfield sits the Jack's Mountain Bridge — officially the G. Donald McLaughlin Memorial Covered Bridge — a 75-foot span built around 1890 using a Burr arch truss rather than Town's lattice.

Wikimedia Commons, CC0 — file page

It's also the only one of the county's covered bridges you can still legally drive through, which makes it the more practical stop and Sachs the more atmospheric one. Seeing both back to back is a decent little lesson in truss design: Town's lattice relies on hundreds of small diagonal planks doing equal work, while Burr's arch layers a curved timber arch over a king-post frame to carry the load in one continuous sweep. Neither is obviously better. They're just two different generations of carpenters solving the same problem with whatever lumber and labor they had on hand.

Sachs Bridge sits on Waterworks Road today, a short walk from a small parking area, open to anyone willing to slow down for it. Given what it's carried across that creek over the last century and a half, it's earned the traffic.