Evaluate the structural characteristics of the bridge, investigate the area of active faults adjacent to the bridge, and the liquefaction of the soil in the region, the testing methods. Relevant construction methods include: foundation pile reinforced or bottom replacement concrete seismic block added, pier steel plate coating reinforced, reinforced bridge pier cap beam, plus shear block, seismic isolation support damper to change of support system. The reinforcement of the bridge column improves the strength and toughness of the bridge resisting larger scaled earthquakes.
Section 1-1 M37B retrofit of 38 bridges from the south side of the crossing road of Zhuqi Chiayi interchange on national freeway no. 3 to Xinhua Tainan provincial highway no. 20 (sta.288k + 500 ~ 348k + 600). Completed in February 2020.
Retrofit works of national freeway no. 3 bridge (sections 1-1 of M37 C1)project. Starting from" Zhuoshuixi River Bridge " to " Zhushan Drainage Bridge " (sta. 241k + 000 ~ 249k + 900), completed in March 2020.