To replace the heavily worn I-5 overcrossing with a delaminated concrete deck at SW 26th Avenue in Southwest Portland, the project team had to navigate challenging site conditions, limited right-of-way, sensitive residential and environmental areas and difficult topography.

Despite the challenges, the project stayed under budget and was completed on time in October 2024. Originally, the team planned a five-stage onsite detour structure costing $19 million with two years of I-5 traffic disruption. Instead, using ODOT’s value engineering process, the team developed an alternative that eliminated the temporary detour.