"Your Majesty has arrived!"

Suddenly, a report woke up everyone, the construction of the Weishui Bridge not only alarmed the hundreds of schools, but also attracted much attention from the government and the opposition, even Li Shimin also changed the depression of being assassinated before, and after hearing the good news, Long Yan Dayue came to see the bridge ceremony in person.

"I've seen Your Majesty!"

Li Yun, Morton and the others immediately stepped forward and said.

"No courtesy, Li Aiqing really lived up to my trust, and finally completed the Weishui Bridge in five years." Li Shimin looked at the magnificent bridge in front of him, and couldn't help but show a shocked expression.

"Li Chun really deserves his reputation, from the perspective of Weichen, Li Yun is already better than the blue." Zhang Liang echoed behind Li Shimin.

He is the secretary of the Ministry of Industry, and the Weishui Bridge is the merit of the Ministry of Industry, and Li Shimin will also attend, so he will naturally not be absent as the secretary of the Ministry of Industry.

"Master Zhang is overrated." Li Yun said modestly.

"Worthy of it, Li Chun's construction of the Zhaozhou Bridge is only more than ten zhang, and the Weishui Bridge built by Li Aiqing is probably a mile long!" Li Shimin smacked his tongue.

"Back to Your Majesty, thanks to the new bridge construction materials and the concept of suspension bridges, the water surface span of the Weishui Bridge is as much as 200 zhang." Li Yun said proudly.

"Two hundred zhang!" Immediately, everyone was in an uproar.

One mile is about 500 meters long in later generations, and 200 zhang is already 600 meters, and the extra leader alone is longer than Zhaozhou Bridge, at this moment Li Yunnai is the most shining star in the audience, even the Mo family is compared to it.

Li Yun continued: "In addition to the length, the Weishui Bridge also adopts a length of two-way six lanes and sidewalks. One direction can lead side-by-side to three horse-drawn carriages, and for pedestrians to pass. ”

Li Shimin nodded slowly, most of the ordinary bridges are one-way streets or can cross two carriages side by side, but the Weishui Bridge is the main artery in the north of Chang'an City, I don't know how many vehicles come and go, the bridge is too narrow to meet the traffic demand, two-way six lanes at present, it is indeed a bit wasteful, but in the long run, the entire northern traffic is no longer worrying.

"More importantly, this bridge can bear 30,000 catties of bicycles, the theoretical limit is 100,000 catties of bicycles, and the life of the bridge body is theoretically 100 years, and if it is regularly overhauled and reinforced, it is enough to be used for more than 200 years." Li Yundao.

"30,000 catties, 100 years!" The Ministry of Industry Shangshu couldn't help but smack his tongue, no one thought that only by hanging with steel cables could reach such a high load-bearing, and it could last for so many years.

You must know that the largest carriage produced in Mojia Village is only 5,000 catties, as for the life span of 100 years, don't look at the Zhaozhou Bridge in later generations has been inherited for thousands of years, if you often use carriages weighing thousands of catties to pass, I am afraid it will not last for a hundred years.

"And the bridge is ten meters higher than the highest water level in Weishui, which does not affect Weishui boating at all, and Weichen also built a wharf not far away, so that the Weishui Bridge can connect water and land transportation." Li Yun pointed to a newly built wharf not far away, where water transportation and land transportation will definitely increase the importance of the Weishui Bridge.

Water transportation is the most common means of transportation in Datang, and Weishui is responsible for the transportation of Chang'an City, but Weishui is an inland river after all, and the ships are generally not large, and the bridge is ten meters above 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 up." Li Shimin couldn't help but be surprised.

"Your Majesty, rest assured, in order to make it convenient for the carriage to go up and down, Weichen deliberately drew out a gentle road surface of nearly five miles from the bridge deck, which is enough for the carriage to pass through the bridge smoothly, and there are ramps next to it to facilitate the carriage to go up and down." Li Yun introduced.

Li Shimin turned around and looked, only to see the bridge deck, a flat cement road along the bridge deck has been paved for as many as two miles, and the next three miles are red brick roads, and the gentle slope of more than ten meters is actually buffered by a five-mile road, almost no difference between flat and flat, and it does not affect the gentle slope at all.

"Pave the road with cement!" The Ministry of Industry Shangshu looked at the cement road that was two miles long, and couldn't help but gasp.

Needless to say, cement is expensive and scarce, but Li Yun actually used it to build roads, but there are also advantages to using cement to build roads, that is, it can be shaped at will, and the entire road surface is also supported by bridge piers, and the road surface can be opened to traffic for carriages coming down from the ramp.

"The ingenuity of this bridge design is the first in the world." Li Shimin nodded in praise.

"What Your Majesty said is very true, but from the perspective of Weichen, the Weishui Bridge, the first in the world, may not be long in time, and there are wider and longer bridges in the world waiting for Lord Li to build." Zhang Liang said with a happy face, looking at Li Yun's eyes a little softer, of course, this is not that he must use Li Yun, but that no one in the world except Li Yun may be able to build such a majestic bridge.

"Lord Zhang, this is not a good family and don't know that firewood, rice, oil and salt are expensive! The Weishui Bridge was built after exhausting the five years of taxes paid by Mojia Village, which was a huge amount of nearly 200,000 yuan, and if the Ministry of Industry built a few more such bridges, it would not be necessary to empty the treasury! Tang Jian, the newly appointed secretary of the Ministry of Civil Affairs, said with a wry smile.

The original secretary of the Ministry of Civil Affairs, Dai Guan, was too old and had already resigned, and Tang Jian, the original waiter of the Ministry of Civil Affairs, took over the post of Shangshu of the Ministry of Civil Affairs.

Morton on the side couldn't help but sigh, it turned out that the new generation of old ministers was slowly aging, and they had retired unconsciously, and the various departments of the DPRK and the Central Committee had slowly changed people.

"Two hundred thousand!" Zhang Liang couldn't help but smack his tongue, this money was deducted from the taxes of Mojia Village, he didn't think it was so expensive, but he really wanted the Ministry of Industry to spend hundreds of thousands of yuan to repair the bridge, and he was a little reluctant in his heart.

"Lord Tang's words are biased, the bridge is a move for the benefit of the country and the people, even if it costs more money, it is worth it, and the bridge is not always a loss, you can also use the bridge to maintain the bridge, assuming that every carriage charges ten cents, and passes three thousand carriages a day, that is thirty yuan, that year is ten thousand, and twenty years can be returned, and this bridge can be used for hundreds of years, a full five times the rate of return, Tang still thinks that it costs money to repair the bridge?" Morton stepped forward and said loudly.

Tang Jian's eyes flashed when he heard this, Weishui Bridge is the northward passage of Chang'an City, and the Longhai Line is generally prosperous, it is already a conservative estimate to pass five thousand carriages a day, and the carriage full of goods charges ten cents is extremely reasonable, and what makes Tang Jian more excited is that the rate of return on repairing the bridge is five times, that is to say, the toll of a bridge is enough to build five more bridges, and the benefits generated by these five bridges can continue to build other bridges, so that the court only needs to invest in the early stage, and in the later stage, the bridge is maintained. It can also make all the rivers in the world build bridges and make the world unimpeded, not to mention the invisible benefits of the Datang economy.