色塊 pic
:::  
home open-chinese E-mail sitemap serch
bar
::: Last Update：2011/6/25  
Emergency reconstruction project of old and damaged bridges on Provincial Highways
 1. Summary:
Taiwan is 394 kilometers long and 140 kilometers wide. Taiwan embraces over 200 longitudinal mountains that reach above 3,000 meters. 31.3% of the island are plains under 100 meters height, 37.2% are hills and tablelands between 100-1000 meters height and 31.5% are mountains over 1,000 meters height; therefore, rivers are short and fast-flowing.
The drainage areas of the 21 major rivers in Taiwan are 24,000 square kilometers, and it counts 68.4% of the island. The rivers characteristic in Taiwan is mainly steep slope with rapid velocity when flooding, and with destructive power.
Over 2,700 bridges on Provincial Highways are under the jurisdiction of Directorate General of Highways. The average age of these bridges are over 22 years old; many of them are located by riverside steep slope; therefore, rapid velocity and severe scour and sedimentation that exposed the foundations will threaten the safety of the bridges.
After being hit by Typhoon Sinlaku in September, 2008, DGH initiated an overall examination of all bridges on Provincial Highways, and selected potentially dangerous ones for reparation and improvement in a short period of time in order to provide safe transport and to elevate government efficiency. After a series of examinations and evaluations, DGH had selected 50 bridges that are potentially dangerous and likely to be damaged during natural disasters. DGH is planning to speed-up for the reparation.
 2. Project time: January, 2009 – December, 2010
 3. Main goal of the project: Finish the improvement project of the 50 damaged and old bridges
 4. Annual goal:
Improve 6 bridges before 2009, and 44 bridges before 2010.
 5. Expected benefits :
(1) Protecting the safety of pedestrians and drivers, and reduce the loses of human lives and government properties.
(2) Elevating the bridge safety, and ease the concerns from the public.
(3) Reducing tremendous long-term costs for bridge maintenance.
(4) Expanding tourism accessibility.
(5) Ensuring a complete disaster prevention and life-saving network.