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The Monocacy Aqueduct — or C&O Canal Aqueduct No. 2 — is the largest aqueduct on the Chesapeake and Ohio Canal, crossing the Monocacy River just before it empties into the Potomac River in Frederick County, Maryland, USA. The 438 foot (133.5 m) aqueduct was built by three separate contractors between 1829 and 1833 at the cost of US$127,900. The aqueduct is a stone masonry structure with a waterway of 19 feet at the bottom and 20 feet at the top. The towpath parapet wall is 8 feet wide and the upstream wall is 6 feet wide. Benjamin Wright, the project's chief engineer, drew the plans with 6 piers, 2 abutments and 7 arches, each with a span of 54 feet. The piers are 10 feet thick with pilaster at each end. The aqueduct is 438 feet in length. Much of the building material was large quartzite stone blocks quarried at the base of nearby Sugarloaf Mountain.
Old Iron Bridge in Piedmont
Remains of Lock Number 12 on the historic I and M Canal in Ottawa, Illinois, USA.
Debris from previous flooding remains on the Morgan Ford Bridge over the Shenandoah River near Front Royal, Virginia.
Minden, Germany- June 5 2023 The Minden Aqueduct consists of two parallel water bridges, that lead the Mittelland Canal over the Weser.  It is the second biggest aqueduct in Europe.
Vintage iron bridge spanning the Schuykill River in Philadelphia. Built 1897.
The C and O Canal Trail At Lock 69 with Water Spilling out of the Dam Surrounded by Forest
Aerial shot of Stone Arch Bridge in Minneapolis, Minnesota
Landscape view of the Tuckasegee River in the town of Dillsboro, North Carolina.
Rapids of the mountain Nisava River, photographed in Serbia.
Brandywine River Bridge (Delaware)
Fall Color Foliage Hits Cuyahoga Valley National Park
Fort Hunter, NY - 6/3/2013: An aquaduct for the Erie Canal crossing thr Schoharie Creek at Fort Hunter, NY.
Point of Rocks, Maryland, USA - June 27, 2024: View below the Route 15 highway bridge over the Potomac River connecting Maryland with Virginia.
Seneca Creek Aqueduct is part of the Chesapeake and Ohio Canal National Park. The towpath is now used by local exercisers.
Buffalo National River, Arkansas, USA. 6 June 2023. Bridge over the Buffalo National River with people on the water
The historic Aqueduct Delaware Canal located in Pt Pleasant, Buck County Pennsylvania.
Kashiwa city, Chiba prefecture.
Names: Teltow Canal - Architectural specs: monument protection - additional specs: local recreation
A bridge over a small river in good weather.
Sunny Summer day landscape of a recreational trail in a lush green forest beside the remains of a lock on the Hennepin Canal in Northern Illinois.
Man in blue jeans and a red top pauses on a section of the Buckeye Hiking Trail to look out at the colorful autumn scenery along the Mad River.
Castelletto di Cuggiono
Lock Number 8 on the historical I and M Canal at Channahon State Park.  Channahon, Illinois, USA.
Public park walkway
Pedestrian bridge across river backwaters in beautiful summer scenery, aerial view.
The Pennyfield Lock has been restored on the C&O Canal and appears in working order except for the leakage. Otherwise, yet another C&O Canal picture in the heat of summer. But it is chained and padlocked, I mean a locked lock, couldn't resist.
The river in the morning
Free Images: "bestof:Monacacy Aqueduct looking from upstream side.jpg en The Monocacy aqueduct on the Chesapeake and Ohio Canal at 42 19 miles the prism of the aqueduct looking"
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