There will be delays on the Highway 47 bridge over the Missouri River one more day next week.
Missouri Department of Transportation Area Engineer Judy Wagner said the third and final drilled shaft on pier 7 will be poured Wednesday or Thursday.
The first two shafts of the pier that are in the water were poured from the current bridge Wednesday, June 14, and Thursday, June 15. The drill shafts are circle footings that go into the rock of the riverbed. There are three drill shafts at each pier.
Wagner said there was a clog in the pipe the first day of pouring. She explained that concrete was stuck in the pipe about 2 1/2 feet up from the bottom of the pipe. A crane lifted the pipe from the water and the concrete was chiseled out.
Since then, crews perfected the pouring, Wagner added.
Future lane closures on the current bridge are expected for piers 5 and 6 of the bridge.
Utilizing the current bridge to pour concrete to the future bridge is unique to this construction project given the proximity of the two structures.
While the work is conducted one lane of the bridge is closed as concrete is poured. There are flaggers to direct traffic for stretches of about 200 feet.
Wagner noted that crews will begin to set the girders on the north side of the new bridge next week during the day, but lane closures will be needed.
Alberici crews began work on the $63 million project in mid-August after the Missouri Highways and Transportation Commission awarded the contract.
The project involves building a new 2,560-foot-long bridge just to the west — upstream — from the existing span, which was completed in 1936.
The new structure is designed with two 12-foot driving lanes, two 10-foot shoulders and a 10-foot-wide biking/walking path along the west side. An overlook, where walkers and bikers can stop and view the river and cityscape, is proposed at the center bridge pier.
The new bridge path will connect to a biking/walking path along Highway 47, north of the river, which ties into the state’s Katy Trail, one of the longest continuous bicycle trails in the United States.
Demolition of the old bridge and finishing touches on the project will be completed in 2019.