How to Detour Around the 2025 I-170 Overpass Closure at I-270
On June 20, 2025, the Missouri Department of Transportation closed off the eastbound ramp on Interstate 270 leading to Interstate 170. The reason, according to MoDOT, is to replace the bridge over Pershall Road, which MoDOT says was built in 1978 and is “being replaced due to age and a substandard substructure.” If you’ve lived…