Major I-70 Topeka Closure: Plan Now for 6-Month Detour Route

Key Details Kansas Department of Transportation will close all lanes of I-70 in downtown Topeka starting Monday, June 8, between Topeka Boulevard and 8th Avenue. The full closure extends through December 2026 as part of a major viaduct replacement project. Why It Matters This extended closure affects your routing significantly. The I-70 Polk-Quincy Viaduct, originally built in the 1950s, requires complete replacement and removal. Plan ahead now to adjust your regular routes through Kansas. Detour Information I-470 becomes your primary detour for through traffic on I-70. Local access to downtown Topeka remains available via ramps at MacVicar Avenue, Topeka Boulevard, 8th Avenue, and 10th Avenue. Additional temporary road closures on Kansas Avenue, Topeka Boulevard, and I-70 will occur starting Tuesday, June 9, during viaduct removal operations. Action Items Update your GPS and navigation systems with the I-470 alternate route. Consider scheduling any Topeka deliveries around the closure period if possible. Stay alert for temporary lane closures during the removal phase.