SWEET HOME – Beginning through the end of September, U.S. 20 will be closed at Sheep Creek Bridge for repairs to the bridge and abutments. Located 26 miles east of Sweet Home, milepost 56.6,the bridge’s eastern abutment rests on an active slide with earth movement measured at six to seven inches a year. The bridge was built to move with the slide, but has reached the point that it must be replaced.
In 2015 during phase one of the two-part project, 50-foot steel piles were placed to redirect landslide activity away from the bridge. Phase two is intended to stabilize the existing structure and eliminate further sliding. The new bridge span and abutment will be built to ride on top of the slide if it keeps moving. This will make impact to the bridge more consistent and predictable, and therefore, more manageable.
Full closure of the highway will last for six to eight weeks. The road will remain open between Sweet Home and the bridge on the west side and from Santiam Junction to the bridge from the east. Campgrounds and recreation areas will continue to be open and accessible.
Detour signs will be posted at various locations to direct travelers around the area via Highways 34, 22, and 126. There are no local detours.
The road closure will be completed by the end of September. However, construction work surrounding the bridge will continue through October.
For more information, including a detour map and videos on the project, go to https://www.oregon.gov/ODOT/
HWY/REGION2/Pages/US-20-Sheep- Creek-Bridge-Phases-1-and-2--. aspx