Chapter 1192

"Your Majesty has arrived!"

Suddenly, a notice woke up the people. The construction of the Weishui bridge not only shocked hundreds of people, but also attracted much attention from the government and the public. Even Li Shimin changed his depression about being assassinated before. After hearing the good news, Long Yan was very happy and came to see the bridge opening ceremony in person.

"Yes, your majesty!"

Li Yun, Merton and others immediately greeted them and went to the luggage lane.

"Excuse me, Li Aiqing really lived up to my trust and finally built the Weishui bridge in five years." Li Shimin looked at the magnificent bridge in front of him and couldn't help showing a shocking expression.

"After Li Chun, he really deserves his reputation. From the perspective of Wei Chen, Li Yun is better than the blue." Zhang Liang echoed behind Li Shimin.

He is the Minister of the Ministry of work, and the Weishui bridge is the merit of the Ministry of work. In addition, Li Shimin will also attend. Naturally, he will not be absent.

"Lord Zhang praised me too much." Li Yun said modestly.

"I can afford it. The Zhaozhou Bridge built by Li Chun is only more than ten feet long, and the Weishui bridge built by Li Aiqing is probably a mile long!" Li Shimin smacked his tongue.

"Your Majesty, thanks to the new bridge building materials and the concept of suspension bridge, the water surface span of Weishui bridge is as much as 200 feet." Li Yun said proudly.

"Two hundred feet!" suddenly everyone was in an uproar.

One mile is about 500 meters long for later generations, and two hundred feet is already 600 meters. Only the more leaders are longer than Zhaozhou Bridge. At this moment, Li Yun is the most shining star in the audience, even Mozi is compared by him.

Li Yun then said, "in addition to the length, the Weishui bridge also adopts a two-way six lane and sidewalk. One way can lead to three carriages side by side for pedestrians."

Li Shimin nodded slowly. Most of the ordinary bridges are one-way roads or two carriages side by side. However, the Weishui bridge is the main artery in the north of Chang'an city. I don't know how many vehicles are passing. The narrow bridge simply can't meet the traffic demand. At present, it's a waste, but in the long run, There are no worries about the passage of the whole North.

"More importantly, the bridge can bear 30000 kg of single vehicle. The theoretical limit is 100000 kg of single vehicle. The service life of the bridge body is theoretically 100 years. If it is regularly repaired and reinforced, it can be used for more than 200 years." Li yundao.

"Thirty thousand kilograms, a hundred years!" the Minister of the Ministry of industry couldn't help but smack his tongue. No one thought that he could achieve such a high load-bearing and persist for so many years just by hanging with a steel cable.

You should know that the largest carriage produced in Mojia village is only 5000 kg. As for the life span of 100 years, although the Zhaozhou Bridge of later generations has been inherited for thousands of years, I'm afraid it can't last for 100 years if you often use carriages weighing thousands of kg.

"Moreover, the bridge is ten meters higher than the highest water level of the Weishui River, which does not affect the boating of the Weishui river at all, and Weichen is also building a wharf not far away to connect the Weishui bridge with water and land transportation." Li Yun pointed to a newly built Wharf Road not far away. Water transportation and land transportation must be more important for the Weishui bridge.

Water transportation is the most common means of transportation in the Tang Dynasty, and Weishui is responsible for the transportation of Chang'an city. However, Weishui is an inland river after all, and ships are generally small. The bridge is ten meters higher than the water level, which does not affect the water level at all.

"Ten meters above the water level, how can such a heavy carriage get on?" Li Shimin was surprised.

"Don't worry, your majesty. In order to make it convenient for the carriage to get up and down, Weichen specially led out nearly five miles of flat road from the bridge deck, which is enough for the carriage to pass through the bridge smoothly, and there are ramps beside it to facilitate the carriage to get up and down." Li Yun introduced.

Li Shimin turned around and saw only the bridge deck. A flat cement road has been paved for as much as two miles along the bridge deck, followed by a red brick road for three miles. A gentle slope of more than ten meters is buffered by a road of five miles, which is almost the same as the flat ground and does not affect the gentle slope at all.

"Pave the road with cement!" the Minister of the Ministry of work looked at the cement road for two miles, and couldn't help taking a breath.

Cement is expensive, needless to say, and rare. However, Li Yun actually uses it to build roads, but there are also advantages to building roads with cement, that is, it can shape at will. The whole road surface is also supported by piers, and the road can be opened to traffic under the road for horses and cars coming down from the ramp.

"The Qiao design of this bridge is the best in the world." Li Shimin nodded and praised.

"What your majesty said is very true, but from the perspective of Wei minister, I'm afraid that the Weishui bridge will not be the first bridge in the world for long. There are still wider and longer bridges waiting to be built by Lord Li." Zhang Liang said with a happy face and looked at Li Yun with more soft eyes. Of course, it's not that he must use Li Yun, But I'm afraid no one in the world can build such a magnificent bridge except Li Yun.

"Lord Zhang, you don't know that daily necessities are expensive! The Weishui bridge was built after five years of taxes in Mojia village. It's a huge sum of nearly 200000 yuan. If the Ministry of work builds several more such bridges, it won't empty the national treasury!" Tang Jian, the new minister of the Ministry of civil affairs, said with a bitter smile.

Dai Zhou, the former Minister of the Ministry of the people, was too old and resigned. Tang Jian, the former Minister of the Ministry of the people, took over the post of minister of the Ministry of the people.

Merton on one side could not help feeling that the old ministers of the new generation were slowly getting old. Unconsciously, they had retired, and the central government departments had slowly changed new people.

"200000 Guan!" Zhang Liang couldn't help but smack his tongue. The money was deducted from the taxes of Mojia village. He didn't think it was very expensive. However, he really asked the Ministry of industry to pay hundreds of thousands of Guan to repair the bridge. Suddenly, he was reluctant.

"Lord Tang's remark is biased. The bridge is beneficial to the country and the people. It's worth spending more money. Moreover, building the bridge is not always losing money. You can also use the bridge to maintain the bridge. Suppose that you charge ten Wen for each carriage and pass 3000 carriages every day, that's 30 yuan, that's 10000 yuan in that year, and you can get back the capital in 20 years, but this bridge can be used for hundreds of years In a short time, with a full five times return, does Lord Tang still think that it costs money to repair the bridge? "Merton came forward and said in a loud voice.

Tang Jian's eyes flashed when he heard the speech. The Weishui bridge is the north channel of Chang'an City, which is as prosperous as the Longhai line. It is a conservative estimate to pass through 5000 carriages every day. Moreover, the charge of ten Wen for carriages loaded with goods is very reasonable. What makes Tang Jian excited is that the return rate of repairing the bridge is five times, that is, the charge of one bridge is enough to build five more bridges, The benefits generated by these five bridges can continue to build other bridges. In this way, chaotang only needs to invest in the early stage and build bridges in the later stage, which can make all rivers in the world build bridges and make the world unobstructed, not to mention the hidden benefits of promoting the economy of Datang.