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津保公路(北线)在未改善前,路基低窄,且多弯曲,在反动统治期间,年久失修,破坏严重,东段为粉砂质土壤,每届干旱季节,风砂积聚,西段低洼,雨季积水,交通时常断阻,一年四季不能畅通。过去由天津开往埧县(运距74公里)的班车早晨发车,天黑才能到达,交通很不方便。为适应工农业生产的发展,1958年开始对此路进行改建,调整了线形,加宽和提高了路基,铺筑了3.5米宽的路面,并在天津埧县段做了双层沥青表面处治,从而使公路面
Before the improvement, Jinbao Highway (North Line) was low and curved with many bends. During the reactionary rule, the highway was disrepairled and seriously damaged. The eastern segment was silty soil. During each drought season, wind sand accumulated and the west Low section, rainy season water, traffic often cut off, can not flow year round. In the past, the shuttle bus bound for Juxian County (74 kilometers away from Tianjin) departed in the morning and arrived in darkness. Traffic was inconvenient. In order to meet the development of industrial and agricultural production, in 1958 began to transform this road, adjust the line shape, widen and improve the roadbed, paved 3.5 meters wide pavement, and in Tianjin Dian made double-layer asphalt surface treatment , So that the road surface