RT Z S over BIG BR


+39.82704, -91.69437
39°49'37" N, 91°41'40" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:RT Z S over BIG BR
Structure number:9636
Old structure number:X 356 1 (from 1992 edition)
Location:S 16 T 58 N R 7 W
Purpose:Carries highway over waterway
Route classification:Major Collector (Rural) [07]
Length of largest span:9.8 ft. [3.0 m]
Total length:22.0 ft. [6.7 m]
Roadway width between curbs:26.6 ft. [8.1 m]
Deck width edge-to-edge:28.5 ft. [8.7 m]
Skew angle:20°
Owner:State Highway Agency [01]
Year built:1938
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 9 / H 10 [1]
Number of main spans:2
Main spans material:Concrete continuous [2]
Main spans design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: October 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:307 [as of 2016]
Truck traffic:13% of total traffic
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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 is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Culvert condition:Moderate to major deterioration or disintegration, extensive cracking and leaching or spalls on concrete or masonry walls and slabs. Minor settlement or misalignment. Noticeable scouring or erosion at curtain walls, wingwalls or pipes. Metal culverts have significant distortion and deflection in one section, significant corrosion or deep pitting. [5]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:75.4

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
October 2017Fair5 out of 1030775.4
October 2015Fair5 out of 1032875.4
October 2013Fair5 out of 1032075.4
October 2011Fair6 out of 1032870.1
December 2010Fair6 out of 1032270.1
January 2009Fair6 out of 1032270.1
January 2008Fair6 out of 1032470.1
October 2005Fair6 out of 1032270.1
December 2003Fair6 out of 1027670.2
November 2001Fair6 out of 1034870.0
November 1999Fair6 out of 1033170.1
September 1997Fair6 out of 1033170.1
December 1995Fair6 out of 1029369.4
October 1993Fair6 out of 1025769.5
November 1991Fair6 out of 1024265.6