Rail - Miami-Dade Metrorail Extension
Construction of the first extension of the Metrorail system in 14 years. Spanning 1.4 miles westward from the Okeechobee Station (by the Miami Canal), under the Palmetto Expressway, up to the new Palmetto Station. Based on an estimated weekday ridership of the Metrorail system of 2,000 daily boarding's, it intended to relieve heavy traffic congestion on the Palmetto/SR 836 and Palmetto/I-95 route connections. The project consisted of 0.7 miles of a reinforced concrete elevated structure as well as 0.7 miles of at-grade rail construction. MCM placed approximately 20,059 CY of concrete during the construction of this project. The cast-in place concrete construction involved from concrete foundations and piers, post-tensioned concrete straddle bents and elevated concrete decks, to concrete rail plinth-pads which connected to the existing elevated rail between the Okeechobee Station and the Lehman maintenance yard. Additional construction involved soil-nail retaining walls, gravity walls, retaining walls and Mechanically Stabilized Earth (MSE) walls. Unrelated to CIP concrete construction were steel tub girders, rail installation and welding, sound wall panels, steel cable trays, electrical, painting, and storm drainage.