Research+committee

Recycled plastic bridge made from recycled plastic bottles doesn't corrode, strong and is environmentally responsible, con is higher price. - Jessa []

Military bridges are used for quick access to cross small gaps or bodies of water, but maintain stability and can hold large amouts of weight. In our situation, a military bridge would be used to cross the Carbon River in a fast enough time to make sure everyone gets to the hill to get through Bonney Lake-Matthew LaLone []

Bridge building material options. A steel bridge would probably be best for our situation due to its durability and longevity. -Michelle []

This website shows the different structures and possibilities of bridges, adding trusses would help the bridge withstand high winds. -Jessa[]

The nevado del ruiz lahar in columbia, a similar situation, can help us plan our evacuation. We might also look at a similar lahar in New Zealand-Jessa []

The bridge over the river must be built on stable ground. You must take into account the slopes along the river banks and the loose soil. Also, you wouldn't want the bridge to be damaged by a small scale landslide that occasionally occurs on the hillsides along the river during the rainy seasons. This isssues could be solved with a ground reinforcement system and a retaining wall. -Michelle [] (Product & Material Center > Foundations > Haywood Baker > Services > Earth Retention > Micropile Slide Stabilization System)

Jenn This wooden bridge is very classy and is the right style for Orting. []

Jenn **This is a sample Evacuation plan:** Earthquake prone area has new technology to help protect against earthquakes-Jessa []

The bridges must be wheelchair accessable. Ramps, slopes, width, handrails, slip resistance and landings must all be considered in order for the bridge to be of use to the disabled. -Michelle []