These bridges are valuable to the history of Oregon and add to the aesthetic beauty of the Oregon Coast Highway. The Cape Creek Bridge is listed on the National Register of Historic Places and the other two bridges are eligible for listing.
Repairs are needed to protect these historic bridges from deterioration from their age and the harsh coastal environment. The bridges will require a variety of work, including concrete and steel repairs, painting, and cathodic protection.
In cathodic protection, concrete bridge surfaces are sprayed with a zinc coating. This prevents the inner steel structural reinforcements of the bridge from corroding in the coastal air. Basically, the zinc coating is designed to corrode instead of the steel.
Neahkahnie Mountain Bridge, north of Manzanita: A rockfall fence is being added to prevent rocks and debris from falling onto the highway, along with bridge repair work.
The new rockfall fence is a dynamic system meant to move and absorb impact from material that falls down the cliff. It is thicker and more robust than the static fencing on either side that is designed to hold the cliff in place. The new fence will protect the bridge by channeling rocks down the cliff. The color will fade over time.
Cape Perpetua Bridge, south of Yachats: A new cathodic protection system is being installed, including a wide turbine generator under the bridge to power the system.
Cape Creek Bridge, north of Florence: A new cathodic projection system is being installed, along with bridge repair work.
mileposts 178.33, 166.46, 40.71
Cost and Funding