Clinton Keith Wildlife Crossing

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Project: Clinton Keith Wildlife Crossing

Title:

Description:

Clinton Keith Wildlife Crossing

Clinton-Keith-Animal-Overcrossing.jpg

About The Clinton Keith Wildlife Crossing Project

PROJECT LOCATION

Murrieta, California

COMPLETION DATE

2017

An animal crossing was constructed in Riverside County to protect wildlife when crossing Clinton Keith Road. Analysis of the surrounding area revealed that this point was a hotspot for wildlife migration, including the Quino checkerspot butterfly, a federally listed endangered species. These low-flying flutterers experience higher risk from oncoming traffic. The topography of the bridge will provide a safer, natural passage for butterflies, birds, insects, deer, coyotes, mountain lions, foxes, roadrunners and rodents.

The Solution

The double arch wildlife crossing bridge was constructed using Contech Arches and an MSE wall system. After the arches and mechanically stabilized earth (MSE) walls were set in place, we backfilled with lightweight cellular concrete. The design of the bridge utilized a buried bridge system, where the cellular concrete backfill surrounding the structure helps to support the loads. By opting for the buried bridge system, the county was able to achieve a cost effective, long term, virtually maintenance free solution due to the material and structure efficiency.

Photo credits: MSHCP Biological Monitoring Program

Project Assets

CORPORATE OFFICE

Los Angeles:
135 E. Railroad Avenue
Monrovia, CA 91016



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