Timelapse video shows the first of a dozen pre-cast arches being installed for the new 7th Street bridge in Fort Worth.
The old bridge was built 100 years ago and it's really showing it's age.
"The original 1913 structure was in need of repair. There was concrete spalling off the metal elements," said Val Lopez with the Texas Department of Transportation.
Each of the arches weighs 300 tons and are wheeled across the old bridge with huge dollies.
It will take two cranes to hoist them into position.
7th Street bridge closed Wednesday at 8:00 p.m. and will stay closed until next Tuesday.
The old bridge won't be demolished until June.
It'll take 150 days to build the new bridge.
Lancaster Street to the south is the best detour.
The Texas Department of Transportation said the new bridge will be the first pre-cast arch bridge in the world.
Without the pre-cast arch construction, the project would have taken a year to finish.
The $26 million cost of the bridge is also a lot cheaper because of the revolutionary design.
KDFW FOX 4
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