Around this time, he carried out railway construction with Masaru INOUE, a railway official in Minbusho, Edmund MOREL, a British chief engineer, and others (In June 12, 1872, the first Japanese railway tentatively opened for 18 miles between 'Shiodome Station [former Japan National Railways] and Sakuragicho Station).
この前後、民部鉄道掛の井上勝、英国人技師長エドモンド・モレル達と共に鉄道敷設工事を進める（明治5年（1872年）5月7日には日本初の鉄道「汐留駅(国鉄)-桜木町駅」間18マイルが仮開業）。