Generated by GPT-5-mini| US 24 | |
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![]() Fredddie, originally SPUI · Public domain · source | |
| State | US |
| Type | U.S. Highway |
| Route | 24 |
| Length mi | 716 |
| Established | 1926 |
| Direction a | West |
| Terminus a | Colorado River |
| Direction b | East |
| Terminus b | Toledo, Ohio |
| States | Colorado, Kansas, Missouri, Illinois, Indiana, Ohio |
US 24 US 24 is a major United States Numbered Highway running approximately 716 miles from western Colorado River crossings near Grand Junction eastward through Kansas City, St. Louis, Peoria, Terre Haute and terminating near Toledo. The route connects multiple Interstates, historic Lincoln Highway segments, and key regional corridors serving freight, commuter, and intercity travel across six states.
The western segment begins near Grand Junction and traverses high desert and mountain valleys, intersecting the US 50 corridor and approaching the Rocky Mountains foothills, then proceeds east into the High Plains entering Kansas. In Kansas, the highway passes through agricultural counties and links towns such as Manhattan and Topeka before crossing into Missouri near the Kansas City suburbs where it interfaces with Interstate 70 and Interstate 35. Across Missouri, the corridor runs toward the Mississippi River via Independence and connects with the US 169 and US 71 corridors. In Illinois the route crosses rural prairie and industrial towns approaching Peoria and then continues east into Indiana where it traverses the Terre Haute region connecting with Interstate 70 and US 41. The eastern terminus lies in the Toledo area, where it meets multiple state routes and access to the Great Lakes shipping region.
The highway was designated in the original 1926 United States Numbered Highway System plan and has been realigned repeatedly in response to the development of the Interstate Highway System, regional planning by state departments such as the Colorado Department of Transportation, Kansas Department of Transportation, Missouri Department of Transportation, Illinois Department of Transportation, Indiana Department of Transportation, and Ohio Department of Transportation. Early alignments paralleled portions of the Lincoln Highway and later US corridors; mid‑20th century upgrades included bypasses around Manhattan and urban segments in Kansas City and St. Louis. Notable projects included river crossings near Missouri River and Mississippi River upgrades coordinated with agencies such as the Army Corps of Engineers and federal highway programs enacted under the Federal-Aid Highway Act of 1956. Preservationists and local governments in places like Peoria and Terre Haute have contested alignments to balance historic districts with capacity improvements.
The route connects with numerous federal and state corridors: western junctions near Interstate 70 and Interstate 76 in Colorado, crossings of US 183 and US 24 Business spurs in Kansas, major interchanges with Interstate 35 and Interstate 70 in the Kansas City metro, a crossing of Interstate 44 near Springfield corridors, intersections with US 67 and US 150 in Illinois, junctions with Interstate 74 and US 41 in Indiana, and eastern termini connections to Interstate 75 and state routes serving Toledo. Numerous county and municipal arterials also provide links to St. Louis suburbs and Midwestern manufacturing centers.
Several auxiliary alignments and business loops serve local access. In Kansas City, business alignments provide access to downtown Kansas City and historic districts. In Manhattan and Topeka business routes preserve local commerce corridors; in Peoria and Terre Haute truck bypasses and alternate routings accommodate heavy vehicles. State transportation agencies have established temporary detours for construction phases; historic alignments remain designated as state or county roads in places such as Madison County and Allen County.
State DOT long-range plans include targeted corridor widening, interchange modernization, and safety improvements coordinated with regional planning bodies such as Metropolitan Planning Organizations in Kansas City, Peoria, and Toledo. Projects under consideration involve replacing aging bridges over the Missouri River and Ohio River feeder streams, deploying advanced traffic management systems influenced by Intelligent Transportation Systems pilot programs, and freight‑capacity upgrades to support connections with Port of Toledo and inland intermodal facilities linked to BNSF Railway and Union Pacific Railroad corridors. Funding sources cited in state capital improvement programs reference federal surface transportation reauthorization measures such as the FAST Act.
Traffic volumes vary widely: rural western stretches report low average daily traffic supporting local agriculture and tourism traffic near Grand Junction, while suburban and urban segments in the Kansas City and Toledo register significantly higher volumes, including substantial commercial truck percentages tied to manufacturing centers in St. Louis and Peoria. State DOT annual reports and traffic monitoring programs provide vehicle miles traveled, peak hour counts, and safety collision data used to prioritize improvements. Freight modeling links corridor usage to national networks including Interstate 70 and Interstate 75, while regional planners cite modal shifts involving Great Lakes shipping and Class I rail connections.