The bridge abutments on the Pierce Creek bridge have been replaced. The project is a cooperative venture of the Mountain Home Highway District and the Boise National Forest. The abutments are treated laminated wood beams and posts, and driven several feet into the ground next to the stream.
The bridge over Pierce Creek, a spawning tributary to the South Fork of the Boise River
The project was completed in fall 2018 and secures the bridge for the long term.
A mud crust over the plate on the bridge. Mud deposited from the numerous debris flow episodes 2013-2014.
The bridge was placed on its original sill in November 2011. The Elk Complex Wildfire of 2013 led to massive debris flows in Pierce Creek and ultimately would have compromised the foundation for the bridge. So the decision was made to life the bridge and replace the substructure and put it back in place, which happened in fall 2018.
Future high flows and flooding will easily pass under the bridge. Pierce Creek fish passage to its headwaters will continue.
