The four 117-year-old “Sawtooth” bridges that hundreds of thousand of commuters use daily are in the final stages to be ...

The 2.7 kilometer (1.7 mile) long tunnel was constructed as a railway tunnel between 1895 and 1897, thanks to the estate owner objecting to the idea of “unsightly trains” crossing his property.

Colorado state officials and the Union Pacific Railroad reached a tentative agreement on the future of the 100-year-old ...

Almost as soon as the rails were pulled up in 1942, bats moved into the old railroad tunnel just south of Fredericksburg on Old San Antonio Road. Millions of bats make the tunnel their home in the ...

A day after thousands of New York City subway riders were stuck underground in Brooklyn for more than two hours due to a ...

An HS2 tunnel boring machine (TBM) has become the first to complete its drive under London after more than two years of ...