Evening Republican, Volume 20, Number 197, Rensselaer, Jasper County, 17 August 1916 — IS LONGEST IN THE WORLD [ARTICLE]

IS LONGEST IN THE WORLD

Concrete Highway Trestle in the Sacramento Valley Is of Record Length. One of the most absorbing examplase of concrete construction so far executed in America is represented by a causeway that spans the Yolo bypass in the Sacramento valley. The Popular Mechanics Magazine describes the construction of this trestle. It is thought to be the longest of its kind in the world and has lately been completed under the supervision of the California state highway commission. Although 3.09 miles from end to end, and a striking specimen of good, accurate workmanship, the elevated roadway was built in a thoroughly substantial maflner for less than $385,000. Certain phases of the construction were accomplished by original methods which have attracted the attention of engineers. The unit system was followed In erected the trestle which Is 20 feet in height and provides a roadway 21 feet wide. It is supported on re-enforced concrete piles, each weighing from three to five tons, that were driven into place. The floor consists of precast slabs. Four of these were placed side by side to span the 20-foot gaps be tween the bents, the full width of the structure. The parts were so carefully designed and put together that the completed trestle is a monolithic structure.