The Weird Reason More Bridges Are About to Fail

The video discusses the importance of bridges and the challenges they face due to aging and climate change. It highlights issues like thermal stress, expansion joints, scour, and corrosion of steel rebar. Solutions such as integral abutment bridges and legislative updates for climate resilience are also explored.

What is one of the main reasons bridges are vulnerable to climate change?

• They are located in deserts.

• They are too new.

• They were built with outdated standards.

• They are made of wood.

How do expansion joints help manage thermal stress in bridges?

• By absorbing water.

• By allowing expansion and contraction.

• By reducing the height of the bridge.

• By increasing the weight of the bridge.

What is a major risk for integral abutment bridges?

• Thermal stress

• Scour

• Earthquakes

• Wind

What is one method to combat scour in bridges?

• Using lighter materials

• Increasing bridge height

• Installing collars on piers

• Painting the bridge

What process allows CO2 to affect steel rebar in concrete?

• Condensation

• Oxidation

• Carbonation

• Evaporation

How can the corrosion of steel rebar be slowed down?

• By using thinner concrete

• By applying epoxy sealers

• By reducing the bridge's length

• By painting the rebar

Why have bridge construction standards been slow to adapt to climate change?

• No awareness of climate change

• Insufficient funding

• Decades of lobbying by fossil fuel companies

• Lack of technology