Complex sentence: After strengthening and reinforcement in 1910 and again in 1929 which almost doubled it's weight, it remained in place until 1949, five years after its replacement, the second Pecos River High Bridge, was completed by the Union Pacific Railroadon December 8,1944.
Split into simpler sentences: After strengthening and reinforcement in 1910 and again in 1929 which almost doubled it's weight, it remained in place until 1949, five years after its replacement. The second Pecos River High Bridge, was completed by the Union Pacific Railroadon December 8,1944.