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FORTWORTH -- The West 7th Street bridge in Fort Worth will close Friday at 8 p.m. so crews can begin work to demolish the bridge.

Work is underway to build a new $25.9 million dollar bridge that will include pre-cast concrete arches.

The project is expected to last 150 days, but Sundt Construction Inc. of San Antonio could get nearly $1 million dollars in bonuses for finishing ahead of schedule.

The 7th Street bridge is one of the main arteries between the West 7th Street area, its restaurants, bars and downtown.Drivers can expect significant delays getting around the construction area for the next several months.

Most of the traffic will be detoured onto Lancaster Avenue, which is about a block south and runs parallel to 7th Street.

The 7th Street bridge was first completed in 1913 and was updated in 1953 when the Trinity River was relocated.The beams, girders, and deck from the 1913 bridge are in critical need of replacement, according to a press release.

Project leaders say the new 7th Street bridge will have four lanes for traffic and a path for pedestrians.

The projected is expected to be completed by fall.

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