The Cornwall Bridge (also known as Bridge No. 560) is a two-lane, concrete
arch bridge
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its structural load, loads partially into a horizontal thrust restrained by the abutments at either si ...
carrying
U.S. Route 7/
Connecticut Route 4 over the
Housatonic River
The Housatonic River ( ) is a river, approximately long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map , accessed April 1, 2011 in western Massachusetts and western Connecticut in the United ...
and the
Housatonic Railroad
The Housatonic Railroad ( ; ) is a Class III railroad operating in southwestern New England and eastern New York. It was chartered in 1983 to operate a short section of ex-New York, New Haven and Hartford Railroad in northwestern Connecticut, a ...
in
northwestern Connecticut
The Litchfield Hills (also known as the Northwest Hills or Northwest Highlands) are a geographic region of the U.S. state of Connecticut located in the northwestern corner of the state. It is roughly coterminous with the boundaries of Litchfi ...
. It was built in 1930 by C.W. Blakeslee and Sons for the
Connecticut Highway Department and consists of six
open-spandrel arches spanning , and is a fairly large example of concrete open-spandrel construction.
The bridge was reconstructed in 1994 and was listed on the
National Register of Historic Places
The National Register of Historic Places (NRHP) is the Federal government of the United States, United States federal government's official United States National Register of Historic Places listings, list of sites, buildings, structures, Hist ...
in 2004.
Description and history

The Cornwall Bridge is located in southwestern
Cornwall
Cornwall (; or ) is a Ceremonial counties of England, ceremonial county in South West England. It is also one of the Celtic nations and the homeland of the Cornish people. The county is bordered by the Atlantic Ocean to the north and west, ...
and southeastern
Sharon
Sharon ( 'plain'), also spelled Saron, is a given name as well as a Hebrew name.
In Anglosphere, English-speaking areas, Sharon is now predominantly a feminine given name, but historically it was also used as a masculine given name. In Israel, ...
, near the village known as
Cornwall Bridge
The Cornwall Bridge (also known as Bridge No. 560) is a two-lane, concrete arch bridge carrying U.S. Route 7 in Connecticut, U.S. Route 7/Connecticut Route 4 over the Housatonic River and the Housatonic Railroad in northwestern Connect ...
. It is oriented east-west, principally crossing the south-flowing Housatonic River, but also the tracks of the Housatonic Railroad which parallels the river's east bank, and roads named River Road on each side. The bridge has six spans of open-spandrel concrete construction, the longest at spanning the river. The five smaller spans (two on the west bank, three on the east) are each in length. In addition to the arched portion of the structure, there are three concrete girder approach spans on each side, giving the bridge a total length of . It carries two lanes of traffic, with no sidewalks.
[
The open spandrel design was chosen to minimize the bridge's footprint and use of concrete, which would have been much more extensive and expensive with more typical designs. It is one of six open-spandrel bridges in the state, and is the largest of those. The bridge was built as part of a state program to modernize the infrastructure of the state's principal travel arteries.][
The village on the Cornwall side is called Cornwall Bridge, having been so named because a bridge of some sort has stood here for many years. The present bridge was built in 1930, and the 19th-century ]covered bridge
A covered bridge is a timber-truss bridge with a roof, decking, and siding, which in most covered bridges create an almost complete enclosure. The purpose of the covering is to protect the wooden structural members from the weather. Uncovered woo ...
was demoted to carrying only pedestrians. The covered bridge then washed away when the Housatonic flooded in 1936. After the state replaced the bridge, the industrial and commercial center of the Village of Cornwall Bridge slowly moved up the hill away from the river, to the current intersection of US Route 7 and Connecticut Route 4
Route 4 is an east–west primary state highway connecting rural Litchfield County to the Greater Hartford area of the U.S. state of Connecticut. It runs from the town of Sharon to the town of West Hartford.
Route description
Rout ...
.[Cornwall Historical Society, “Cornwall Bridge,” http://www.cornwallhistoricalsociety.org/research-and-collections/common-topics-and-subject-guides/the-eight-cornwalls/cornwall-bridge/] The Cornwall Bridge Railroad Station remains below the new bridge, although it has not received service since 1972.
See also
* List of crossings of the Housatonic River
There are numerous crossings of the Housatonic River, both by road and railroad bridge. The following is a list of crossings of the Housatonic River in order of occurrence from the river mouth at Long Island Sound to its principal source streams ...
*
* List of bridges on the National Register of Historic Places in Connecticut
References
External links
Connecticut Historic Highway Bridges
{{National Register of Historic Places
Road bridges on the National Register of Historic Places in Connecticut
Cornwall, Connecticut
Sharon, Connecticut
Bridges in Litchfield County, Connecticut
U.S. Route 7
Bridges of the United States Numbered Highway System
National Register of Historic Places in Litchfield County, Connecticut
Bridges over the Housatonic River
Concrete bridges in the United States
Open-spandrel deck arch bridges in the United States
Bridges completed in 1930
1930 establishments in Connecticut