zilwaukee bridge

Transportation
11:27 am
Fri April 5, 2013

Heading north on I-75? You'll run into Zilwaukee Bridge construction

Construction projects and detour routes for the I-75 Zilwaukee Bridge.
Credit MDOT

Start your calculations and predictions... will three lanes over the Zilwaukee Bridge be enough? Or are you better off taking a different route?

Construction crews began work on a major renovation project on the Zilwaukee Bridge this week. The project is expected to last through January 2015.

Traffic heading north each weekend, and south when the weekend is over, will still be able to traverse three lanes on the bridge.

Traffic is being rerouted along as follows:

Wednesdays - Saturdays

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Transportation
3:09 pm
Tue February 8, 2011

Lane closures on Zilwaukee bridge

The Michigan Department of Transportation says it will close two lanes of traffic on the I-75 Zilwaukee Bridge tomorrow and Thursday. From MDOT:

The Michigan Department of Transportation (MDOT) will close the two left lanes in both directions of I-75 on the Zilwaukee Bridge in Saginaw County. These double-lane closures will be in effect 8:30 a.m. - 4:30 p.m. daily on Wednesday, Feb. 9, and Thursday, Feb. 10.

The closures are necessary to accommodate survey work on I-75.

Two lanes (ramp and drive) will remain open on northbound lanes on Wednesday, and on southbound lanes on Thursday.

Crews will close the two left lanes on both days.

Transportation
11:21 am
Fri February 4, 2011

Price tag for keeping the Zilwaukee Bridge clear of ice and snow

The Zilwaukee Bridge near Saginaw
user myself wikimedia commons

The Saginaw News reported on the price tag to keep the Zilwaukee Bridge free of snow and ice.

The don't use cheap salt which would result in corrosion of the multi-million dollar bridge. They use a more expensive melting agent - calcium magnesium acetate.

The News reported that the Michigan Department of Transportation used $236,640 worth of the stuff to keep the bridge clear last year:

The Michigan Department of Transportation spent $1,392 a ton to dump 170 tons of calcium magnesium acetate on the 8,000-foot-long bridge on Interstate 75 over the Saginaw River last winter.

Gregg Brunner, manager of the Bay City Transportation Service Center, told the News that MDOT "spends about $800,000 to $1 million a year to maintain the six-lane bridge year round with a four-member crew."

Around 31,000 cars and trucks pass over the bridge daily.

The mile-and-a-half  Zilwaukee Bride had an infamous beginning. It was built so freighters could pass under it on the Saginaw River.

The project was plagued with accidents, "spalling", and the discovery of PCBs. It cost the state $117.5 million to build the bridge and it was opened back in 1988.