As part of a joint venture, Traylor Bros., Inc. is constructing the Honolulu Authority for Rapid Transportation’s (HART) Airport Guideway and Stations Design-Build Contract. The approximately $875 million contract is to design and build the project. The new 5.2-mile elevated guideway will extend from Aloha Stadium to the Middle Street Transit Center Station in Honolulu, Hawaii and includes four stations. This is the third in a series of projects to design and build the Honolulu Rail Transit Project, a 20-mile grade separated fixed guideway transit system with 21 stations.
Drilled shaft production is nearly complete. Some drilled shafts are up to 350 feet in depth due to the soft soils along the alignment. Pier column production is ongoing, with more than 230 columns required along the alignment.
The job required casting 2,703 segments at an off-site precast yard and transporting them 5 to 10 miles to the urban job sites. The segments are more than 30 feet wide and weigh between 45 and 65 tons. When production was at its peak, the yard produced 36 segments each week. The larger pier segments were produced at the rate of one per weekend, with six typical segments and one pier segment each weekday. In addition to casting more than 2,700 segments, the yard also produced the 5,400 permanent sound walls that will be placed along the entire alignment.
To complement precast operations, three overhead gantries were custom designed and fabricated in Italy. The first gantry is more than halfway complete setting its assigned spans, and a third gantry was assembled and put into operation in the summer of 2020.
Station work is well under way. At Airport Station, drilled shaft production is complete. At Middle Street, where the station will be situated over a stream, the work trestle has been installed. Work on foundations and utilities is under way at Pearl Harbor Station, and at Lagoon Drive, foundation work has begun.
Rail is currently being installed on the completed guideway sections. Electrical and wet utility relocations continue to make way for the new guideway and stations.
The project is scheduled for completion in late 2021.