Martigney Creek

The Jefferson Barracks Bridge, officially the Jefferson Barracks Memorial Arch Bridge, is a pair of bridges across the Mississippi River on the south side of St. Louis, Missouri metropolitan area. Each bridge is 3,998 feet (1,219 m) long with a 909-foot (277 m) long arch bridge spanning the shipping channel. The northern bridge was built in 1983, and the southern opened in 1992. A delay occurred during the construction of the southern bridge when a crane dropped a section of it into the river and it had to be rebuilt.The original Jefferson Barracks Bridge was a steel truss toll bridge that carried U.S. Route 50. Construction on that bridge began on August 5, 1942, and it opened two years later. A toll was charged until 1959, when the construction bonds were paid off. Prior to the construction of the original bridge, river crossings in this area were made via the Davis Street Ferry in the Carondelet neighborhood of St. Louis.The current bridge carries traffic for both Interstate 255 (part of the St. Louis beltway) and U.S. Route 50. However, I-255 itself was not built until a few years after the northern bridge opened in 1983.The names comes from the nearby Jefferson Barracks National Cemetery, itself originally part of the large Jefferson Barracks military complex, established in 1826 and decommissioned in 1946.

Koch is a former community in St. Louis County, Missouri. It was named for Robert Koch, a German bacteriologist. The location was at what is now Interstate 255 east of Route 231. It had a post office, which is now closed. The Robert Koch Hospital was located just off US 255 before it crosses the Jefferson Barracks Bridge in south county at 4101 Koch Road. The hospital was built by the city of St. Louis primarily as a quarantine facility for patients with a variety of easily transmissible diseases, including smallpox, yellow fever, and tuberculosis. There is a cemetery located on the grounds of this closed hospital, the building founded in 1875 with its last major renovation in 1949 and was demolished in 1989. The cemetery referred to as "Quarantine" cemetery is located on the 503 acres (2.04 km2) associated with this hospital. Many people believe this site is haunted. The hospital site was listed on the National Register of Historic Places in 1984. Nineteen buildings were constructed by 1939 and an 105-acre (0.42 km2) farm, post office, railroad stop, housing, and recreational facilities made the hospital almost self-sustaining. By the end of World War II new medications decreased the life-threatening effects of tuberculosis; from the 1950s to 1983 the hospital was used as housing for the indigent elderly. It also houses an antenna site for St Louis City Emergency Management.

The Jefferson Barracks Military Post is located on the Mississippi River at Lemay, Missouri, south of St. Louis. It was an important and active U.S. Army installation from 1826 through 1946. It is the oldest operating U.S. military installation west of the Mississippi River, and it is now used as a base for the Army and Air National Guard. A Veterans Affairs healthcare system campus is located on the southern portion of the base and is also the headquarters for the Veterans Canteen Service.

Jefferson Barracks National Cemetery is an American military cemetery located in St. Louis County, Missouri, just on the banks of the Mississippi River. The cemetery was established after the American Civil War in an attempt to put together a formal network of military cemeteries. It started as the Jefferson Barracks Military Post Cemetery in 1826 and became a United States National Cemetery in 1866. The first known burial was Elizabeth Ann Lash, the infant child of an officer stationed at Jefferson Barracks. The cemetery is administered by the Department of Veterans Affairs on the former site of Jefferson Barracks. It covers 331 acres (134 ha) and the number of interments as of 2021 is approximately 237,000. The cemetery is listed in the National Register of Historic Places.

Cliff Cave Park is a 525-acre public park located in St. Louis County, Missouri. The park is owned and operated by the St. Louis County Department of Parks and Recreation. It is named after Cliff Cave, a natural cave located in the park that is a historical and archaeologic site. The park contains woodlands, wetlands, and rocky hillsides and is adjacent to the Mississippi River. It has three trails: the Mississippi Trail, the Spring Valley Trail, and the River Bluff Trail. The Riverside Shelter overlooks the Mississippi River. An active train track runs through the park. Cliff Cave Park is part of the Mississippi River Greenway. The park won the "Best View of the Mississippi" award in 2009, which it was granted by The Riverfront Times.

Cliff Cave County Park is a 525-acre public park located in St. Louis, Missouri. The park is operated by St. Louis County Parks. It is named after Cliff Cave, a natural cave located in the park that is a historical and archaeologic site. The park contains woodlands, wetlands, and rocky hillsides and is adjacent to the Mississippi River. It has three trails: the Mississippi Trail, the Spring Valley Trail, and the River Bluff Trail. The Riverside Shelter overlooks the Mississippi River. An active train track runs through the park. Cliff Cave Park is part of the Mississippi River Greenway. The park won the "Best View of the Mississippi" award in 2009, which it was granted by The Riverfront Times.

Lemay Township is a township in St. Louis County, in the U.S. state of Missouri. Its population was 34,736 as of the 2010 census.

Mehlville is a census-designated place (CDP) in south St. Louis County, Missouri, United States, an area locally known as "South County". It is an inner-ring suburb of St. Louis, and part of the Greater St. Louis metropolitan area.

Notre Dame High School is a Roman Catholic, private, all-girls school located in Lemay, St. Louis County, Missouri. just south of St. Louis city, on the 43-acre grounds of the motherhouse of the School Sisters of Notre Dame on the Mississippi River. While its roots go back to 1897, its present form and name date to 1934.

Oakville High School (formerly Oakville Senior High School) is a public comprehensive high school in Oakville, Missouri that is part of the Mehlville R-9 School District.

The South County Opportunity for the Purpose of Education (SCOPE) program is an alternative High School program, housed at the Witzel Learning Center in Mehlville, St. Louis County, Missouri. It is part of the Mehlville School District.

Mehlville High School is a public comprehensive high school in Mehlville, Missouri, United States. It is part of the Mehlville R-9 School District.