U.S. Route 66 Alternate (East St. Louis)

U.S. Route 66 Alternate (East St. Louis) was a short-lived alternate alignment of U.S. Route 66 serving the Illinois approach to St. Louis and the river crossing to East St. Louis during the early era of the United States Numbered Highway System. The route provided an alternative to the mainline routing through downtown St. Louis County and connected travelers to regional arteries such as U.S. Route 40 and U.S. Route 50. Though decommissioned in the mid-1930s, the corridor influenced Great River Road approaches and local road development in Metro-East communities.

Route description

The alignment began on the western end near the Gateway Arch vicinity adjacent to the Mississippi River waterfront and proceeded eastward across the river via an approach to bridges serving vehicular traffic between St. Louis and East St. Louis. From the riverbank the alternate followed urban and industrial corridors through Downtown East St. Louis and skirted neighborhoods near Alton freight lines, paralleling rights-of-way associated with the Illinois Central Railroad and later with Union Pacific Railroad trackage. It intersected with U.S. Route 40 and later state routes that linked to Interstate 55 and Interstate 64 corridors, threading between river levees and rail yards. The pavement surface consisted of early concrete and asphalt typical of 1930s federal projects overseen by agencies such as the Illinois Department of Transportation predecessor organizations and was punctuated by commercial nodes that served motorists on U.S. Route 66, including motor courts, service stations affiliated with brands like Standard Oil and Sinclair Oil Corporation, and eateries catering to long-distance travelers.

History

The alternate designation emerged in the context of the 1926 creation of the United States Numbered Highway System and subsequent realignments responding to traffic demands during the Great Depression era. Municipal leaders in St. Louis County and civic boosters from East St. Louis and Madison County lobbied for improved river crossings and through-routes to stimulate commerce connected to the Missouri Pacific Railroad and Baltimore and Ohio freight movements. The route was formally signed in the early 1930s to divert long-distance traffic from downtown St. Louis congestion and to provide a lower-grade crossing alternative to mainline U.S. Route 66 bridges. In the mid-1930s, large federal highway projects, including bridge improvements and the rise of new routing standards promoted by the American Association of State Highway Officials (AASHO), resulted in the reintegration of the alternate into the primary U.S. Route 66 alignment and its eventual decommissioning. Subsequent highway planning during the post-World War II period and the creation of the Interstate Highway System shifted long-haul traffic away from the corridor, though local roads retained vestigial alignments and names reflecting the Route 66 heritage.

Major intersections

- Western terminus: Junction with crossings near Eads Bridge approaches and local connectors to downtown St. Louis. - Intersection with U.S. Route 40 (alignment corridors near National Road) providing east–west continuity across the Mississippi River. - Junctions with state highways linking to Belleville and Fairview Heights, serving St. Clair County, Illinois commuter flows. - Eastern terminus: Integration with local arterials in East St. Louis feeding industrial districts adjacent to Mississippi River docks and rail yards.

Route significance and legacy

Though brief in length and tenure, the alternate carried strategic importance as an urban bypass linking two major Midwestern transportation centers, St. Louis and East St. Louis. It played a role in redirecting interstate traffic around downtown bottlenecks during an era when National Old Trails Road and other named highways were yielding to the numbered system. The corridor affected commercial land use patterns in Metro-East, encouraging the placement of motor hotels and roadside businesses that contributed to the cultural mythology of U.S. Route 66 popularized by works like the novel The Grapes of Wrath and the song "(Get Your Kicks on) Route 66". Transportation historians connect the alignment to broader trends in regional planning involving agencies such as the Illinois State Toll Highway Authority and the Bi-State Development Agency that later shaped cross-river mobility and transit on the St. Louis metropolitan area.

Preservation and landmarks

Remnants of the alternate alignment survive as local streets, historic business facades, and adaptive reuses of service stations and motor courts that are subjects of interest for preservation groups such as the National Trust for Historic Preservation and local chapters of the Route 66 Association of Illinois. Significant nearby landmarks linked to the corridor include the Gateway Arch, historic bridge approaches like Eads Bridge, and industrial heritage sites in East St. Louis that reflect early 20th‑century river commerce tied to Anheuser-Busch distribution networks and rail freight. Efforts by municipal governments and nonprofits have targeted signage, heritage trails, and inclusion on inventories like the National Register of Historic Places for selected structures along former Route 66 corridors, contributing to cultural tourism initiatives promoted by organizations including the Illinois Office of Tourism and regional visitor bureaus.

Category:U.S. Route 66 Category:Historic roads in Illinois Category:St. Clair County, Illinois