
Major Bridge Demolition Underway at Refugio Creek, Gaviota
Big changes are happening along Highway 101 near Refugio Creek in Gaviota as Caltrans begins the demolition and replacement of aging bridges. If you've driven between Lompoc and Santa Barbara recently, you've likely noticed southbound traffic crossing into the northbound lanes—a temporary detour that's part of this major infrastructure project.
Starting Tuesday, January 28, the southbound bridge over Refugio Creek will be demolished. This work is crucial because the bridges, built in 1974, are deteriorating due to a chemical reaction in the concrete called alkali-silica reaction. This reaction causes the concrete to swell and crack, leading to corrosion of the reinforcing steel inside. Despite temporary repairs over the years, the bridges are now too compromised to remain safe for long-term use.
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The $56 million project is not just about replacing the bridges but also about improving the surrounding environment. Under the bridges, workers are removing a concrete-grouted rock lining from the creek to help steelhead trout migrate upstream. For decades, these fish, vital to the ecosystem, have been blocked by shallow water conditions caused by the existing structure. Gravel and natural stone will replace the concrete, and the creek banks will be replanted with native vegetation to restore the habitat.
Once completed, the new bridges will be seven feet wider, featuring updated shoulders, pedestrian walkways, and improved lighting. However, until October, expect lane shifts and closures, including Refugio Road under the bridge, which will be shut down through January 31. MCM Construction, based in North Highlands, California, is leading the effort.
While the construction might cause temporary inconveniences, these upgrades will ultimately enhance safety and environmental sustainability. For motorists, it's a reminder to plan for delays and drive cautiously in work zones. For the community, it's a sign of progress and a step toward a better balance between infrastructure and the environment.
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