Traffic will flow during Chain of Rocks bridge work
The road has been heavily patched, and there’s no room to pull over to change a tire.
Welcome to the twin Interstate 270 bridges over the Chain of Rocks Canal, the 8½-mile, manmade bypass to the Mississippi River.
The Illinois Department of Transportation will soon replace the aging spans in Madison County. Built in 1963, the truss bridges are in need of repair and are too narrow to accommodate more lanes in the future.
Walsh Construction Co. of Chicago has been awarded a $104 million contract to build the new four-lane bridge, which will be just north of the existing bridges.
Traffic will remain on the existing bridges while the new span is built, said Paul Grabowski, an engineer at the Illinois Department of Transportation. He predicted “minimal” effects on traffic while construction is under way. The new bridge should be open to traffic by December 2013.
The plan stands in sharp contrast to the one being used by the Missouri Department of Transportation to renovate the westbound Blanchette Bridge span over the Missouri River between St. Charles and St. Louis counties.
That project, which is also being carried out by Walsh Construction, will require eastbound and westbound traffic to temporarily share the current eastbound span.
For the Illinois bridge, Grabowski said, some earthwork already has begun on Chouteau Island, between the Mississippi River and the canal, in preparation for temporary lanes. Earth is also being moved near the western abutment.
The new bridge will have room for a third lane in the future. Until then, the bridge will have two lanes and an extra merging lane cash advance loan no fax.
Grabowski said the deck was in poor condition and the structural steel needed repair.
The truss spans over Chain of Rocks Canal are similar to the Interstate 35W bridge that collapsed in Minneapolis in 2007. But Grabowski said it was structurally adequate.
The new bridge will be a single span and will resemble the Poplar Street Bridge.
Glenn Scott of Wildwood drives over the two bridges every day while making his 49-mile commute to work in the Metro East.
Although he travels in the opposite direction of the heaviest commuter traffic, he has been caught in traffic jams when highway crews make frequent repairs. That kind of work is usually done at nonpeak times of day.
“It definitely is one of the worst sections of road I drive on on any kind of regular basis,” Scott said. “As often as they’ve worked on that section of roadway, you’d think it would be in pristine shape. But it’s really pretty rough.”
The new I-270 bridge will cross the Chain of Rocks Canal, which opened in 1954. The canal allows barge traffic to bypass a treacherous reach of the Mississippi River just north of St. Louis.
Illinois is awaiting necessary permits from the Army Corps of Engineers. Mike Petersen, a spokesman for the corps, said the agency was reviewing the project before granting IDOT a temporary easement to begin construction.
The current I-270 bridges over the Chain of Rocks Canal carry nearly 55,000 cars a day.