MDOT has posted bridge safety reports online since August 2007. State bridge information can be downloaded by route number and/or county, and is current as of June 29.
Only highway bridges greater than 20 feet in length are included; ratings for pedestrian, railroad and locally owned bridges are not included. MDOT is updating bridge condition information on the Web four times a year.
"Monitoring the condition of state highway bridges and ensuring their safety is extremely important to MDOT," said State Transportation Director Kirk T. Steudle. "Posting highway bridge condition reports online is more than a performance measurement for our department. It's our way of keeping the public informed of steps we are taking to responsibly manage the state's vital transportation assets."
National Bridge Inspection Standards require MDOT to inspect bridges every two years. The Mackinac, International, and Blue Water bridges are inspected annually, exceeding federal requirements. These three bridges are managed by bridge authorities, and their ratings are not included in the list MDOT has posted to the Web.
MDOT said it employs more than 20 bridge inspectors who have specialized training and work in teams of two. Bridge inspectors use a variety of tools to assess bridge safety and structural integrity. The types of inspection performed include bridge safety inspections, fracture critical inspections, fatigue-sensitive inspections and underwater inspections. Non-destructive evaluation and bridge monitoring also is done as needed. Techniques used include calipers to measure the thickness of steel, ultrasonic testing to check for defects in steel, sounding to detect concrete separation, and monitoring bridge deflections and response to load.
Of the 4,406 bridges included in the June 29, 2012, report, 279 are classified with the engineering term of "structurally deficient," meaning they may require rehabilitation or replacement at some time in the future; and 852 are classified as "functionally obsolete," meaning their design is outdated and may require modernization at some time in the future.
The last highway bridge report was posted to the Web on April 17, 2012, and covered bridge inspections through March 30, 2011. The new report lists eight fewer structurally deficient bridges and 218 fewer functionally obsolete bridges than on March 30, 2011.
Copyright WNEM 2012 (Meredith Corporation). All rights reserved.
Tuesday, June 18 2013 12:37 PM EDT2013-06-18 16:37:02 GMT
WNEM has received word that a teenager is dead and two adults have been injured and taken to the hospital after being caught during the storm while boating on the Saginaw Bay. The teenager, a 14-year-oldMore >
WNEM has received word that a teenager is dead and two adults have been injured and taken to the hospital after being caught while boating during the storm.More >
Tuesday, June 18 2013 9:23 AM EDT2013-06-18 13:23:30 GMT
A 5-year-old girl set up a lemonade stand across the street from the Westboro Baptist Church compound, and now the group is targeting her. Jayden Sink raised nearly $200 on Friday while she sold lemonadeMore >
A 5-year-old girl set up a lemonade stand across the street from the Westboro Baptist Church compound, and now the group is targeting her.More >
Tuesday, June 18 2013 12:26 PM EDT2013-06-18 16:26:49 GMT
The Midland County Sheriff's Office is investigating a two vehicle crash that claimed the life of a Gladwin County woman, severely injured her husband and resulted in minor injuries to a 16-year-old femaleMore >
The Midland County Sheriff's Office is investigating a two vehicle crash that claimed the life of a Gladwin County woman, severely injured her husband and resulted in minor injuries to a 16-year-old female driver.More >
WNEM has received word that 83 positions at St. Mary's of Michigan will be cut along with a number of open positions are not currently filled. The medical provider is looking for ways to be more effectiveMore >
WNEM has received word that 83 positions at St. Mary's of Michigan will be cut along with a number of open positions that are not currently filled.More >
Monday, June 17 2013 9:59 PM EDT2013-06-18 01:59:19 GMT
LYNCHBURG, VA (RNN) – Kimberly Burke is used to capturing emotion. As a wedding photographer, she has an eye for tender moments, like the photo she snapped of a Marine and his bride praying that has goneMore >
A quiet moment captured before a couple wed has brought collective "awws" by millions on the internet.More >
ObitMichigan.com is dedicated to delivering immediate, up-to-date information on obituaries 24 hours a day, 7 days a week to families and friends in Mid-Michigan. Death notices are displayed during theMore >
ObitMichigan.com is dedicated to delivering immediate, up-to-date information 24 hours a day, 7 days a week to families and friends who have lost loved ones.More >
Tuesday, June 18 2013 12:47 PM EDT2013-06-18 16:47:53 GMT
Police have released the identity of the woman killed in Saginaw's latest homicide on Sunday. Denise Price, 43, was killed near the intersection of S. 5th and Burt streets, becoming the city's 18th homicideMore >
Police have released the identity of the woman killed in Saginaw's latest homicide Sunday.More >
Monday, June 17 2013 6:21 PM EDT2013-06-17 22:21:19 GMT
Golf ball-sized hail and downed trees are being reported in Saginaw County after a severe thunderstorm moved through Monday afternoon. Midland County was also hit by the storms that eventually triggeredMore >
Tuesday, June 18 2013 9:47 AM EDT2013-06-18 13:47:39 GMT
A group of homeowners in Clackamas County is banding together to send crooks a strong message about an increase in crime in their neighborhood. They're starting to post signs that read, "Glock block. WeMore >
Homeowners in the Milwaukie area are posting signs in their neighborhood that say: "Glock block. We don't call 9-1-1."More >