Contractors will bid soon on building the downtown streetcar line, one of the single biggest MAPS 3 construction projects.

Construction of the 4.6-mile main line and 2.3-mile Bricktown loop is estimated to cost $57.2 million.

"We are right on budget," consultant Mark Dorn told a MAPS 3 advisory subcommittee this week.

Including six streetcars and a maintenance shop, the streetcar system is expected to cost $131 million.

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