Centennial Greenway Master Plan

Master Plan Centennial

Master Plan

The master plan for the Centennial Greenway is a 17-mile corridor that stretches between Forest Park in the City of St. Louis and St. Charles County. The greenway will connect the communities of University City, Olivette, Ladue, Clayton, Creve Coeur, Maryland Heights and St. Peters in St. Charles County. A portion of this greenway follows the same route of the 1904 Olympic marathon held in St. Louis as part of the World’s Fair.


Current Status

Beginning with the easternmost section, Centennial Greenway: Forest Park to Washington University to Vernon, it meanders 1.5-miles (paved) from Skinker and Forsyth Boulevards at Forest Park through the Washington University Campus to Delmar Boulevard (along Melville Avenue) in the Loop Business District and north to Vernon Avenue on Ackert Walk. A “betterment” project to improve aged infrastructure and add wayfinding signage and other amenities to the greenway in the City of University City, City of St. Louis and Washington University was completed in early 2020.

Further west, Centennial Greenway: Shaw Park to Olive travels along I-170, linking four different communities; Clayton, Ladue, University City and Olivette. The intersection where the greenway crosses Delmar was very confusing for people walking or riding bikes to navigate. In 2017, we contracted with Alta Planning + Design to address safety concerns.  We gathered community feedback  to develop both short-term and long term solutions to improve this intersection and make it easier for people to walk or ride a bike across Delmar. The changes include new landscaping , navigation signage, and special pavement markings in white and green to separate people who are walking and biking at both crossings.

In St. Charles County, Centennial Greenway: KATY Trail to Heritage Museum is a 2.7-mile segment (paved) that provides a vital link between the KATY Trail and St. Charles Heritage Museum Park to the west. It also connects to St. Louis County’s 4.5-mile paved Creve Coeur Connector trail extending from Creve Coeur Lake Memorial Park that features a separated lane on the Page Avenue Extension Bridge for people walking or riding bikes to cross over the Missouri River between St. Louis County and St. Charles County. You can walk, run or ride all the way from Heritage Park to Creve Coeur Lake Memorial Park or take the KATY Trail to explore historic Main Street in St. Charles and Frontier Park. Construction to extend the Centennial Greenway: KATY Trail to Heritage Museum across Highways 364 and 94 via two bridges  was completed in spring 2017. Thanks to these new bridges, people can safely walk or ride a bike across these busy highways; connecting schools, neighborhoods, parks, and businesses to each other as well as other area attractions like the KATY trail and Indian Meadows Park.

Future Connections

Thanks to a robust planning effort in 2018 and 2019, Olivette residents and community members identified the route and amenities for the expansion of the greenway from its current endpoint at Olive near I-170 to Warson Park. This project will be divided into two phases. Phase 1 will extend the Centennial Greenway 1.23 miles from Dielman Rd to Warson Park, which is immediately adjacent to the newly formed 39 North Ag-Tech district. This phase also includes improvements to the I-170 intersection. Phase 2 will extend the greenway 0.85 miles from Olive Blvd and I-170 to Dielman Rd. See the  alignment and sign up for updates about this project here.

Plans to connect the Centennial Greenway in and around the 39 North Innovation District continue to move forward.  (The district includes 600 acres surrounding the Danforth Plant Science Center, BRDG Park, Helix Incubator, Yield Lab and Monsanto/Bayer.)

In St. Charles County, planning is  underway to extend the Centennial Greenway from Christy Drive and Old Highway 94 to Hackmann Road and Schaefer Park.

Other greenway segments slated for design and engineering in the future include a connection between Olive Boulevard and Creve Coeur Lake Memorial Park and Olive Boulevard and the Jewish Community Center in Creve Coeur.