Urban trees are valuable, but they require strategic planting and adequate maintenance. When ignored or poorly managed, the cost can be enormous. From falling branches to cracked sidewalks, tree-related hazards can put people and property at risk and cost cities millions.
The Risk from Trees
While falling trees during storms or from old age are dangerous, they’re not the only concern.
Trees growing too close to streets, sidewalks, utility lines, or buildings can reduce visibility, block walkways, and increase maintenance costs.
Tall, overhanging branches may cause:
- Power outages
- Damage to homes, cars, or other property
- Increased risk of injury to pedestrians and drivers
Surface Roots Can Cause Damage
Tree roots can be a hidden hazard.
- Exposed roots create tripping risks for pedestrians.
- They can damage lawn equipment, such as lawnmower blades.
- Roots may also crack sidewalks, break sewer lines, or affect building foundations.
High Costs of Tree-Related Damage
Improperly placed or poorly maintained trees can lead to major expenses. Many cities spend millions of dollars fixing damage caused by urban trees.
These costs may include:
- Sidewalk, curb, and gutter repairs
- Tree removal and replacement
- Sewer and pavement damage repairs
- Legal and liability claims
Estimated costs:
- $0.75 to $2.36 per person for routine repairs
- Up to $6.98 per resident in more affected areas
- Large cities may spend over $100 million per year
Who Pays the Price?
In some cases, local governments shift repair costs to residents. This often leads to:
- Smaller trees being planted as replacements
- A decline in overall urban tree canopy
- Reduced environmental and economic benefits from trees
