ILL 16 & 100 over AUTEN DITCH


+39.13761, -90.57143
39°08'15" N, 90°34'17" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:ILL 16 & 100 over AUTEN DITCH
Structure number:042000300000000
Old structure number:000042000309875 (from 1992 edition)
Location:1.6 MI SE CALHOUN CO
Purpose:Carries highway over waterway
Route classification:Minor Arterial (Rural) [06]
Length of largest span:36.1 ft. [11.0 m]
Total length:102.0 ft. [31.1 m]
Roadway width between curbs:36.1 ft. [11.0 m]
Deck width edge-to-edge:36.1 ft. [11.0 m]
Skew angle:27°
Owner:State Highway Agency [01]
Year built:1965
Year reconstructed:1996
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Prestressed concrete [5]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Precast Panels [2]
Wearing surface:Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]

Latest Available Inspection: July 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:2,500 [as of 2015]
Truck traffic:12% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Water adequacy appraisal:Equal to present minimum criteria [6]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:92.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
July 2016GoodGoodGoodGood250092.0
June 2014GoodVery GoodVery GoodVery Good225092.7
June 2012GoodVery GoodVery GoodGood250092.0
June 2010GoodVery GoodVery GoodGood245092.2
June 2006GoodVery GoodVery GoodGood245092.2
March 2005GoodVery GoodVery GoodGood280091.2
March 2003GoodVery GoodVery GoodGood280091.2
June 2001GoodExcellentExcellentGood285091.1
June 1999GoodExcellentExcellentGood290090.9
February 1999GoodExcellentExcellentGood260091.8
June 1997GoodExcellentExcellentGood260091.8
February 1997PoorPoorSeriousSatisfactory250037.0
February 1996PoorFairSeriousGood250040.0
March 1995PoorFairSeriousGood290040.0
February 1994PoorFairSeriousSatisfactory290040.0
January 1992PoorFairSeriousGood295040.0