The fifth bridge repair was at the end of 1937. In order to cooperate with the emergency repair of Yunnan-Myanmar highway, the bridge was rebuilt as a 10 load highway bridge. The reconstruction project was designed by Xu, an engineer in the management office of the National General Communications Department, and constructed by Guo Zengwang, a section chief and engineer. The scheme is as follows: the original abutment remains unchanged; The steel frame bridge towers on both sides of the river are filled with concrete and reinforced into steel cement structure; The number of main cables on both sides is increased from 2 to 8, and the suspenders and beams are reinforced. 193810/kloc-0 was completed and opened to traffic in late October. A 10 ton truck can pass each time. 1939 officially opened in February, becoming an important bridge on the Yunnan-Myanmar highway.

During World War II, Japanese imperialism blocked China's maritime traffic, and the Yunnan-Myanmar Highway became the only channel for international assistance to China's resistance against Japan. The Japanese aggressors tried every means to destroy Huitong Bridge. From1October 28th 1940 to February 27th 194 1, they carried out six air raids on Huitong Bridge, flying 168 sorties and dropping more than 4,000 bombs. Every time the bridge is damaged to varying degrees, vehicles are blocked. The staff and troops guarding the bridge rushed to repair it immediately after each bombing by the Japanese invaders, but the load capacity of the bridge has been reduced, and only one 7.5-ton truck can pass at a time.

At the beginning of 1942, the Japanese invaders invaded Yunnan from the north of Ruishi, Myanmar, captured Longling County on May 4, and occupied Songshan on the west bank of Nujiang River that night. On the west coast highway, the vehicles evacuated from the west coast are balanced, and the flow of refugees is congested, most of them are overseas Chinese who defected from Singapore, Malaysia, Myanmar and other countries. Public and private vehicles and refugees scrambled to cross the bridge, the order could not be maintained, and the cables of the suspension bridge were shaking. At 8: 00 a.m. on May 5, Yu Feipeng, the fugitive government minister of transportation, ordered to blow up the east bridge tower, the main cable was blown off and the whole bridge fell into the river. At noon, the Japanese invaders drove to the West Bank Bridge by chariot. Our troops guarding the bridge fought back and fought fiercely with the Japanese invaders across the river, and then deployed along the river. The Japanese invaders' attempt to attack Kunming and Chongqing was smashed in front of the destroyed Huitong Bridge. The sixth bridge repair was in the summer of 1944. In May of that year, China's army crossed the Nujiang River at various ferries, and in early June launched a comprehensive counterattack against the Japanese invaders who invaded Songshan, Pingjia, Longling and Tengchong. In order to rush to transport the arms and materials supporting the front line, Du Qiao Engineering Office went all out to build a temporary footbridge at the suspension bridge on June 18, and at the same time, built docks on the east and west sides, caught up with two floating rafts to help the army transport, and began to prepare for the resumption of the suspension bridge. The footbridge was completed in only three days, and the floating crossing project was opened to traffic on the 28th. Vehicles, materials, troops, etc. Crossing the river by rafts, the river is busy and tense day and night, and the traffic is unimpeded. On July 4th, another Mule-Horse Bridge was completed. 1 August, suspension bridge was repaired by surprise. The destroyed bridge tower on the east coast was replaced by wood truss, and all the steel cables, suspenders and vertical and horizontal beams were newly erected. It only takes two months from preparation and construction to repair and opening to traffic. The continuous delivery of weapons and materials to the West ensured the need of front-line operations and accelerated the victory of the China people and the demise of the Japanese aggressors. The enemy entrenched in Songshan and Tengchong were annihilated on September 7 and 14 respectively, and the remnants of the enemy defending Pingjia broke through and fled west on September 22. Longling County, which both sides fought for together, was also recovered on165438+1October 3. Among them, the emergency repair personnel of Huitong Bridge contributed greatly.

Later, Huitong Bridge was destroyed by bandits from Princess League in mid-June of 1949. In June165438+1October of the same year, the local revolutionary armed forces temporarily demolished the bridge deck, cutting off the road for Kuomintang troops to flee to Myanmar. After liberation, people's governments at all levels cherished this bridge and carefully maintained it. In order to speed up the frontier construction, they have carried out many major repairs.